[[File:Figure 1. SRS QCM200 Quartz Crystal Microbalance.jpg|300px|thumb|'''Figure 1.''' SRS QCM200 Quartz Crystal Microbalance]]

''Use a Stanford Research Systems QCM200 Quartz Crystal Microbalance with an e-corder to perform QCM experiments, including Electrochemical Quartz Crystal Microbalance (EQCM) experiments.''

== Introduction ==
The [http://www.thinksrs.com/products/QCM200.htm QCM200 System] is a [http://en.wikipedia.org/wiki/Quartz_crystal_microbalance Quartz Crystal Microbalance] (QCM) manufactured by [http://www.thinksrs.com Stanford Research Systems Inc.] It measures the resonant frequency and series resistance of a 5 MHz, AT-cut quartz crystal. Resonant frequency changes as a linear function of the mass of material deposited on the crystal surface.

The instrument outputs an analog signal proportional to relative frequency (Δf) and a signal proportional to conductance (Vc). The Vc signal is related to the series resistance of the crystal and solution viscosity.

This application note describes the procedure to monitor relative frequency (Δf) and mass displacement (Δm) on an e-corder. It also describes the setup to perform Electrochemical Quartz Crystal Microbalance (EQCM) techniques with an eDAQ [http://www.edaq.com/EA163 EA163 Potentiostat] and e-corder, or an eDAQ [http://www.edaq.com/ER466 ER466 Potentiostat].

[[File:Figure 2. Rear of QCM200 unit.jpg|300px|thumb|right|'''Figure 2.''' Rear of QCM200 unit]]
[[File:Figure 3. Front of QCM200 unit.jpg|300px|thumb|right|'''Figure 3.''' Front of QCM200 unit]]

== QCM Experiments ==
Set up the QCM200 and QCM Probe as per instructions in the Operation and Service Manual supplied with the system.

For immersion experiments, secure the QCM Probe to a retort stand and insure that the reaction vessel is big enough and has enough solution to immerse the head of the QCM Probe.

To monitor the Δf signal, connect a BNC to BNC cable from Frequency Analog Out on the rear of the QCM200 to an e-corder input (See Figure 2), or to ER466 Potentiostat Input 1.

If you also wish to monitor Vc, connect a BNC to BNC cable from the Conductance Output on the front of the QCM200 to a spare e-corder input (See Figure 3), or to ER466 Potentiostat Input 2.

[[File:Table 1. delta f ranges and suitable Scale Factors.jpg|300px|thumb|'''Table 1.''' Δf ranges and suitable Scale Factors]]
[[File:Figure 4. Units Conversion Window.jpg|300px|thumb|right|'''Figure 4.''' Units Conversion Window]]

== Chart Settings and Calibration ==
In Chart’s rate pop-up menu, select a suitable sampling speed for monitoring the processes that will be occurring at the face of the crystal oscillator.

With the head of the QCM probe out of the solution, set the C0 Compensation switch on the front of the QCM200 to HOLD and the ten-turn dial to 8.0 (Dry Operation Setting). See Operation and Service Manual for how to set the optimal C0 for different media.

Press on the PARAMETER Key on the QCM200 to scroll through the LED display menus.

Hold down the VALUE key for 2 seconds whilst in any display menu to (1) set the Frequency Offset to the current Absolute Frequency value (2) Zero the Relative Frequency readings (3) zero the Mass Displacement display and (4) zero the Frequency Analog Out voltage output.

Press PARAMETER until Scale is displayed. The Voltage Scale Factors are displayed in either Hz/V or kHz/V. Press on VALUE to change the Scale Factor. The Scale Factor to choose depends on the largest Δf value expected, noting the QCM200 has a maximum analog output of ±10 V.

Analog Frequency Out [V] = Δf/Scale Factor

Double the expected maximum Δf and use the values in Table 1 to determine the best Scale Factor to use. Using the narrowest range possible, increases the digital resolution of the measurements.

For a simple immersion test in water, the expected Δf is approximately 715 Hz, so the 200 Hz Scale Factor is the best.

For very small frequency fluctuations, the sensitivity can be further increased by using a narrower e-corder gain range than the default ±10 V range.

Select the Input Amplifier for the Channel connected to the QCM200 Frequency Analog Out. With the Crystal Oscillator in air, the signal should be already zeroed. If not, press the VALUE Key on the front of the QCM200 for 2 seconds. If the signal is noisy, experiment with the various low pass filters.

Click on Units... in the Input Amplifier window, to open the Units Conversion window (Figure 4).

For Point 1, enter 0 in the left hand cell, and zero in the right hand cell. For Point 2, enter 1 in the left hand cell, and the Scale Factor selected (200 for the immersion test) in the right hand cell. Define the units as either Hz or kHz, depending on the Scale Factor selected.

Click OK. The channel is now calibrated to read the relative frequency output in either Hz or kHz.

To configure another Channel to directly display mass displacement, select Arithmetic... on the Channel.

The general mass sensitivity equation is

Δf = −Cf × Δm

Where Cf = the sensitivity factor for the crystal (56.6 Hz.µg/cm2 for a 5 MHz crystal at room temperature).

If using the standard 5 MHz quartz crystal supplied with the QCM200 system, enter the expression in either Figure 5 or 6 into the Arithmetic window.

{|
| [[File:Figure 5. Use this expression if using 200 and 500 Hz Scale Factor.jpg|300px|thumb|right|'''Figure 5.''' Use this expression if using 200 and 500 Hz Scale Factor]]
| [[File:Figure 6. Use this expression if using 1, 2, 5, 10, 20 kHz Scale Factor.jpg|300px|thumb|right|'''Figure 6.''' Use this expression if using 1, 2, 5, 10, 20 kHz Scale Factor]]
| [[File:Figure 7. Series Resistance expression, assuming Vc is monitored.jpg|300px|thumb|right|'''Figure 7.''' Series Resistance expression, assuming Vc is monitored]]
|}

Enter µg/cm2 as the unit name.

The Conductance Output signal (Vc) in related to the series resistance of the QCM crystal by:

R = 10000 × (10 − Vc/5) − 75

[[File:Figure 8. e-corder and Potentiostat setup for EQCM work.jpg|600px|thumb|right|'''Figure 8.''' e-corder and Potentiostat setup for EQCM work]]

Enter this expression in into the Arithmetic window of a spare channel to record series resistance directly (See Figure 7). Define the unit name as Ω (Ohms).

The e-corder system is now set up to record relative frequency, mass displacement and series resistance of the QCM simultaneously. Click on start to begin recording data and perform your experiments.

Note, other parameters such as temperature an pH can be monitored on other channels with suitable amplifiers and transducers.

== EQCM Experiments ==

In EQCM experiments, a potential is applied to the gold surface of the quartz crystal oscillator, and the change in mass near the surface and current from electrochemical processes are monitored simultaneously.

To perform EQCM techniques, set up the [http://www.edaq.com/ER466 ER466 Potentiostat], or the [http://www.edaq.com/EA163 EA163 Potentiostat] and [http://www.edaq.com/e-corder-units e-corder with four or more channels], as per instructions in their respective hardware manuals. Reference and auxiliary electrodes are also required, as found in the [http://www.edaq.com/ET014 ET014 EChem Electrode Kit].

Connect the green working electrode cable from the Potentiostat to the Crystal Face Bias connector on the QCM25 Crystal Controller, using a banana plug adapter. Connect the yellow cable to your reference electrode, and the red cable to your auxiliary electrode.

Figure 8 shows a typical setup for EQCM work.

=== QCM Techniques ===

Chart software is used for EQCM experiments.

For amperometric (current versus time) techniques, a fixed potential can be set in the Chart software Stimulator menu.

For cyclic voltammetry techniques a potential ramp can be defined in the Chart software Stimulator menu (Up & Down, and Triangle items). If greater versatility of the applied potential is required (eg arbitrary start and end potentials, manual ramp interrupt or ramp reversal) an ER175 Waveform Generator can be used.

Chart typically displays signals (current, potential and QCM ∆f) all versus time. Use the Chart Software XY window to show the more useful votammogram (current ∆f versus potential). See the Chart Software Manual for more detailed instructions.

Sections of the current signal can be integrated (wth respect to time) to prove an estimate of transferred charge. This should correspond to the amount of electrolysed sample which in turn should be proportional to to the amount of material deposited or removed from the QCM electrode. See the various Chart software methods for reporting an integrated quantity

Main Page

2017-03-20T00:38:15Z

PaulDuckworth:

This Wiki site was created for discussion about eDAQ products and their uses.

== [[Application Notes]] ==
# [[Application_Notes#Electrochemistry|Electrochemistry]]
# [[Application_Notes#Chromatography_PowerChrom|PowerChrom]]
# [[Application_Notes#Data_Recording_in_Chart|Data Recording in Chart]]
# [[Application_Notes#C4D_Conductivity_Detector|C4D Conductivity Detector]]
# [[Application_Notes#SDx_Tethered_Membranes|SDx Tethered Membranes]]
# [[Application_Notes#Technical_Notes|Technical Notes]]

== [[Teaching Notes]] ==
# [[Teaching_Notes#EXP001_Anodic_Stripping_Voltammetry|Anodic Stripping Voltammetry]]
# [[Teaching_Notes#EXP002_Cyclic_Voltammetry_of_Ferrocene_Carboxylic_Acid|Cyclic Voltammetry]]
# [[Teaching_Notes#EXP004a_Measurement_of_Iron_Corrosion_Exchange_Current|Corrosion of Iron]]
# [[Teaching_Notes#EXP006_Fluoride_Ion_Selective_Electrodes|Ion Selective Electrodes]]
# [[Teaching_Notes#EXP009_Heat_of_Neutralisation|Heat of Neutralisation]]
# [[Teaching_Notes#EXP011_The_pH_Electrode_and_Potentiometric_Titrations|Potentiometric Titration]]
# [[Teaching_Notes#Phospholipid_Membrane_Conductivity|Conductivity of a Phospholipid Membrane]]

== [[Screencast Training Videos]] ==
# [[Screencast_Training_Videos#Electrochemistry|Electrochemistry]]
# [[Screencast_Training_Videos#Electrochemical_Impedance_Spectroscopy_.28EIS.29|Electrochemical Impedance Spectroscopy]]
# [[Screencast_Training_Videos#Chart|Chart]]
# [[Screencast_Training_Videos#PowerChrom|PowerChrom]]
# [[Screencast_Training_Videos#C4D_Conductivity_Detector|C4D Conductivity Detector]]
# [[Screencast_Training_Videos#SDx_Tethered_Membranes|SDx Tethered Membranes]]
# [[Screencast_Training_Videos#FIA_Flow_Injection_Analysis|Flow Injection Analysis]]
# [[Screencast_Training_Videos#Pod-Vu_for_isoPods|Pod-Vu Software]]

== [[Manuals]] ==

2015-08-06T07:39:37Z

PaulDuckworth: /* Programmable HV power supplies */

== Introduction ==
[[File:ER430SmallPanels.jpg|thumb|upright=2|right|'''Figure 1.''' ER430 HV Sequencer front and back panels]]
This manual is intended to allow the user to install, check and run the ER430 HV Sequencer. It provides detailed information on the system and its operation. Please read this manual carefully prior to beginning operation.

The ER430 High Voltage Sequencer provides the following functions:
::• Four independent programmable metered high voltage (HV) supplies.
::• Safety Interlock system
::• Software that allows arbitrary sequences of voltages to be generated

== Checking the Instrument ==
Before you begin working with the device, you should check:
:• that the contents of the package you received match the packing list
:• for any sign of physical damage that might have occurred during transit.
If you find a problem, please contact your [http://www.edaq.com/edaq-distributors eDAQ distributor] or agent immediately.

== Safety First ==

This equipment generates high voltages of up to 3000 V DC at currents of up to 200 µA. Making contact with such voltages can be extremely dangerous.

Ensure that the high voltage (HV) circuits are housed in an insulated enclosure fitted with an Interlock safety circuit and with no manual access to HV circuits while circuits are alive.

Safety precautions:
::• Ensure that the safety interlock circuit is connected to the HV Sequencer and is only active and enabled when no accidental access to High Voltage circuits can be made.
::• Wear rubber soled footwear
::• Ensure the floor and bench top are dry
::• Stand on a rubber mat when in the vicinity of high voltages

The ER430 features design precautions to ensure that there is no accidental application of high voltages. These include automatic shutdown in the event of voltage or current overloads . This will in some circumstances prevent the unit from operating. In these cases check all settings and safety interlocks carefully before resuming the experiment.

=== What is an Interlock ===

An interlock is a mechanical or electrical system that prevents the inadvertent operation of of an instrument.

In the case of the ER430 HV Sequencer this is achieved by using a switch located in the enclosure in which high voltages are active. This switch is connected via a cable to the front panel INTERLOCK BNC in such a way that the switch is only closed when no access is available to the High voltages inside the enclosure.

For example with the eDAQ supplied ET225 Micronit Chip Electrophoresis Platform, high voltages can only be applied when the top cover is in place. This is detected and the interlock switch enabled to allow the application of high voltages.

If the user is providing the MicroChip enclosure then it is the user’s responsibility to provide the required interlock function.

To test the Interlock function it is sufficient to apply a short circuit across the INTERLOCK BNC input pins. This should only be done with no connections to the High Voltage input connectors.
ER430

=== System Indicators ===
System indicators as shown in the preceding diagram provide a direct indication of system operation that reflects the state of the internal hardware. These indicators will assist you in monitoring system operation and in diagnosing problems – study them carefully:

INTERLOCK LED: Amber LED
FLASHING = Interlock open, unit disarmed, arming not enabled.
OFF = Interlock in place and enabled, unit can be ARMED.
ON = Interlock in place, unit armed and ready for operation.

SYSTEM STATUS LED: RGB LED (Multicoloured)
GREEN when “on line” and ready as a Master
BLUE when ready as a Slave

METER FUNCTION LED: RGB LED
GREEN: Safe (disconnected)
YELLOW: Current Mode
BLUE: Voltage mode

HV STATUS: RED LED
OFF: supply disconnected
ON: supply connected and active.

Notes:
#On power up the system performs a startup test and flashes the front panel LEDs through the various colors available for display.
# In some cases where the HV supply needs to be used in proximity to light sensitive detectors it is possible to optionally turn off all the LEDs to maintain low background illumination.

== Hardware Installation ==
'''ATTENTION:''' When installing the system for the first time ALWAYS perform software installation before connecting the hardware units. This ensures that the correct drivers are installed

After carrying out the software installation described in the next section, perform the following Hardware installation procedure. It will confirm that:
::• That safety interlocks are in place and functioning correctly
::• The unit can be armed and disarmed

Operation:
::• '''Safety first''' Connect the unit to a good ground using the terminal post on the rear of the unit.
::• Connect the unit to the 12V DC mains power pack.
::• Connect the unit to the PC using the USB cable provided.
::• Turn Power on.

INTERLOCK LED will flash if interlock is not enabled.

HV Status LEDs: Off (no high voltage output)

STATUS LEDs: Green

=== TEST INTERLOCK Function ===

This function can be tested without any software running:
::• The INTERLOCK LED will initially be flashing.
::• Connect a short circuit to the INTERLOCK BNC.
::• INTERLOCK LED will turn OFF.
::• Press the ARM Push Button for approximately 1 to 2 seconds. You should hear a beep, warning you that the HV outputs have been armed (enabled) and the INTERLOCK LED will turn ON.
::• At this point all HV supplies are still inactive but are in a state where they can be set and controlled by the Sequencer Application software.
::• Pressing the Arm button again will DISARM the HV Sequencer, and the INTEROCK LED will turn off.

A momentary push on the Arm button will disable all the HV outputs of the Sequencer.

=== INTERLOCK features ===
The system is provided with a number of safety features or Interlocks:
::• Chip adapter interlock: The chip adapter used should provide a safety contact interlock to indicate that the microchip adapter is safe for use. This interlock is a contact closure switch, which is closed when the HV circuit is fully enclosed and protected from user access. This interlock is connected to the front panel Interlock BNC and indicates to the ER430 that it is safe to arm the system.
::• USB Present: The system cannot be ARMED without an active USB connection
::• Software Control: Once the system is ARMED High Voltages can only be applied under software control.
::• ARM circuit: prior to applying HV to an external circuit the system must be armed by the user by depressing the front panel ARM push button for approximately 2 seconds.
::• DISARM: The system can be disarmed by a momentary push of the ARM button.
::• Power Overloads: the circuit detects power overloads and situations that lead to the generation of arcs (sparks). The system will switch itself off in such circumstances and in such circumstances may require to be reinitiated with power being turned on Off and On.

'''CAUTION:''' Do not disconnect HV leads by hand while High voltages are present – this is extremely dangerous and can cause harmful arcs to be generated. To disable power use the ARM/DISARM front panel button or the software’s Disarm or Disconnect menu items

You are now ready to operate the Sequencer software which will allow you to generate and output a series of high voltage pulses and ramps.

== Software Installation & Operation ==

=== Installing the HV Sequencer software ===
Insert the HV Sequencer installation USB stick into your computer. It is recommended to install the software before plugging in the hardware, as it ensures the drivers are correctly installed.

The eDAQ Sequencer Setup Wizard will display a start-up screen; follow the prompts to install the software.
Start up screen
Final Start up screen

=== eDAQ Sequencer Overview ===

eDAQ Sequencer is a Windows application that provides the means to setup a series of steps that are executed under computer control. The following functions are provided:

System setup and sequence entry: The software identifies system configuration on startup and allows the operating parameters to be set immediately.

Table driven Sequence: A time based table is filled out, specifying that the operations to be performed in sequence. This includes setting of HV supplies to new voltages, trigger and digital I/O line functions. The following sequence operations are implemented:

Time: set to xxxx seconds
Meter 1&2: Disconnect, Read V, Read I
Output1&2: Set V=xxxx (V and I monitored), Read V, Read I
Digital Out: Low/Open, High/Closed, Short Pulse, Long Pulse
Special commands: Wait for trigger, Wait for Arming, Go Safe
New functions can be readily added to meet customer requirements

Digital outputs can be used to control external devices or the recording of data in an ecorder.

Monitoring: Once a sequence is started the user is able to observe the progress of the sequence on the sequence table. Values of HV supply voltages and currents are displayed during operation.

=== HV Sequencer Main Window ===

=== Communication ===

The HV sequencer uses a virtual USB serial communications (COM) port. When the ER430 hardware is first attached to USB, a free COM port number is automatically assigned by Windows. That COM port will be then used every time that unit is plugged in again.

Note: the first time you connect the system to the computer it may take some time for the system to identify the HV sequencer device driver and install it. You will be notified when the device is ready.

The first time you use the sequencer software, you need to specify the COM port that the hardware has been assigned. Select the Preferences option in the File menu, then choose your HV Sequencer in the list at the top – see screen shot below. This preference is automatically saved for future use

Preferences panel

If you are uncertain about which COM port to assign use, the Serial Port Monitor application can help identify the COM port assigned to the HV sequencer. This small application is included on the HV Sequencer installer USB stick, and can also be downloaded from the eDAQ Utilities and Tools download webpage:

[[http://www.edaq.com/utilities_tools.php www.edaq.com/utilities_tools.php]]

The serial port monitor runs as an icon in the notification area. Clicking on it will show a list of eDAQ COM port devices attached to your computer.

The other Preference options set the digital output type, and provide control over front panel lights in situations where light pollution needs to be kept to a minimum.

Check if you have installed an interlock as described previously. The INTERLOCK LED should be OFF indicating that the INTERLOCK is in place.

Click the Online in the menu bar to attach the selected ER430 unit to the Sequencer application.

Click the Offline in the menu bar to disconnect the selected ER430 unit from the Sequencer application.

=== Disarming and Interlock Test ===

Press and hold the red ARM button to arm the unit. As before, the unit will beep and arm itself. This will also be shown in the software’s display.

You can now disarm the unit by either:
::• Pressing the red ARM button again
::• Clicking “Disarm” in the top-right of the software window.

While the unit is armed, you can test the safety interlock by removing the short-circuit from the BNC connector. The unit should immediately disarm itself, disconnecting the outputs, and turning off any applied voltages.

=== Manual Settings ===
After arming the unit, click on the More… button to display the controls for making immediate changes to the unit.

The right hand side of the HV Sequencer setup panel provides the means to manually set meter functions, output voltages, and the digital outputs’ states. Make some selections, and then click on Set. The ER430 hardware will immediately apply the settings you have chosen, and the software will display your choices, along with readings of current and/or voltage.

At this point the system will indicate the voltages set and currents measured. Since no loads are yet connected, the currents will be very near zero.

=== Setup panel ===

At any time, pressing the Disarm button in the top-right hand corner of the Main Window or the red button on the front panel of the ER430 will disarm the unit and make it safe.

After disarming, you must press and hold the red button (as before) to re-arm it. The software can not re-arm the device.

Outputs let you control the digital outputs of the unit. In the preference you can set Output configuration as contact closure, or TTL.
HV Sequences
The lower area of the Setup panel provides the means to define a “program” or “sequence” to run. This consists of a number of timed steps, each of which can update the state of one or more of the individual functions or outputs. There are also some “special” commands that can be carried out. Unused connections can have the width of their columns reduced by dragging their column separator.

All changes on a step happen simultaneously (within 2 milliseconds).
Setup screen with an example

Here is another example program:

If a step doesn’t have anything entered in its box, the output will remain unchanged from its previous setting.

A time of “0” means “immediately upon starting”, and the times are cumulative, measured from when the sequence was started, i.e.: the delay between the first four of the lines above is 5, 3, and 4 seconds respectively.

It is recommended to have the first row setting every output to a known state, in case the previous run was stopped part-way through, leaving the unit in an unknown state.

When the program finishes, the unit will be left in whatever state it was at the end. It will not automatically disconnect or disarm the outputs, unless explicitly told to do so.
The Meter channel functions are:
Disconnected: Disconnected from the front panel terminal (LED GREEN)
Read V: Voltmeter connection (LED BLUE)
Read I: Current Meter connection (LED YELLOW)
The Output channel functions are:
Disconnected: Disconnected from the front panel terminal.
Read V: Voltmeter connection (LED BLUE).
Read I: Current meter connection (LED YELLOW)
Set V: Set the voltage to the value entered in the second column – In this mode the Voltage indicated will be the actual voltage produced within 1%. (LED RED)

Digital outputs can be set to:
Low/Open: Output goes low or open, as per the “digital output mode” setting in Preferences.
High/Closed: Output goes high or closed.

The type of digital output, TTL or Contact Closure, is set from the Preferences dialog in the File menu.

Special is a special function to be performed. You can either:
::• Disarm: Disconnect HV supplies, and stop the program, or
::• Wait for trigger: Pause, and wait for a high/close on the rear panel’s green connector “Trigger” pins.

Simple editing commands are available on the Edit menu. The option to Always show the slave will force the display of the second control panel and additional program columns, even if a second unit is not attached.

Programs can be saved and loaded using the menu options in the File menu.

Once you are satisfied with your program, click the Run button in the menu bar. The software will step through the program, executing each step at the given time after starting.

The Pause button can be used to pause running of the program. The Run button changes to a Resume button, which you can click to continue execution.
Stop will stop execution, but it will leave the unit in the current state, with whatever voltages selected still being output.
The Disarm button will stop any running program and put the ER430 hardware into a safe state.
Various fault and safety switch conditions will also force a disarming (and termination of program), including:
• USB cable being removed
• Front panel safety interlock opened/removed
• Front panel red button being pressed
• When operating with a slave unit, disconnection from the slave unit

=== Modes of Operation ===

==== General ====
::• Disarmed/Safe – High voltages and meters disconnected
::• Armed- High voltages are active and available for connection to external circuit.

==== Programmable HV power supplies ====
Output Voltage: Adjustable from ±200V to ±3000V at up to 200µA.
Output Polarity: Positive or Negative with respect to the common ground potential

==== Operating Modes ====
O/C mode: Circuit disconnected by high voltage relay.
Voltage Mode: Voltage mode with current and voltage monitoring
HiZ Mode: Voltage monitoring – 10Meg impedance
S/C Mode: Short circuit to ground with current monitoring

==== Meters ====
Operating Modes
O/C mode: Circuit disconnected by high voltage relay
HiZ Mode: Voltage monitoring – 100Meg impedance
S/C Mode: Short circuit to ground with current monitoring

By combining the HV power supplies and meters it is possible to setup the conditions which load the sample into the separation channel and then apply the appropriate voltages to cause separation and detection of the sample components as shown in the example.

=== Typical Installation ===

== ER430 HV Hardware ==

=== ER430 HV Channel Block Diagram ===
A Block diagram of a HV supply channel is shown below; there are four identical HV channels in each ER430unit:

=== ER430 Meter Channel block diagram ===

=== Green Connector Pin Numbers ===

ER430 HV Sequencer “green” connector Pin functions

1 TRIG + TTL IN 11 HV 1 E HV VOLTAGE MONITOR 1
2 TRIG - TTL COM 12 HV 1 I HV CURRENT MONITOR 1
3 HV4 E HV VOLTAGE MONITOR 4 13 CTL1 + DIGITAL IN/OUT 1
4 HV4 I HV CURRENT MONITOR 4 14 CTL1 - DIGITAL COM
5 COM COMMON 15 CTL2 + DIGITAL IN/OUT 2
6 HV3 E HV VOLTAGE MONITOR 3 16 CTL2 - DIGITAL COM
7 HV3 I HV CURRENT MONITOR 3 17 CTL3+ DIGITAL IN/OUT 3
8 HV 2 E HV VOLTAGE MONITOR 2 18 CTL3 - DIGITAL COM
9 HV 2 I HV CURRENT MONITOR 2 19 CTL4 + DIGITAL IN/OUT 4
10 COM COMMON 20 CTL4 - DIGITAL COM

Notes:
# Digital I/O pins are implemented as contact closure or TTL outputs, software selectable
# Trigger input can be a contact closure or TTL input
# HV VOLTAGE MONITOR scale factor: 500mV/kV
# HV Current Monitor Scale factor: 100mV/mA

== Specifications==

=== High Voltage Output and Mode Options ===

::• Channels: 4
::• Model: UR3*
::• Maximum Voltage Setting: ±3000 V
::• Minimum Voltage Setting: ±200 V
::• Current: ±200 µA max
::• Ripple: 0.1%
::• Operating Modes: Applied voltage, Open Circuit (O/C), and Short Circuit (S/C)
::• Load regulation: <2% specified for 20-90% full load:
::• Rise and Fall times: <5 ms specified for changes within the same polarity regime
::• Mode Change: <100ms due to relay operations, safety and software latency

Note: Output is referred to system common (Case Ground)

=== Safety Features ===
An interlock is provided on
::• the mechanical case to ensure that no voltages are present with the case open unless authorized maintenance is in progress.
::• the microchip environment to ensure that accidental contact is not made with the high voltages.

The Arm/disarm switch needs to be held for 2 seconds to arm the system and allow high voltages to become active. Any short contact on the ARM switch will disarm the system.

'''CAUTION''': It is the responsibility of the user to ensure that adequate protection is provided on the equipment provided by the user. eDAQ provides microfluidic chip adaptors with appropriate interlock features.

=== Meter Functions ===

::• Voltage Range: ±3000 V
::• Voltage Resolution: 1 V
::• Current Range: ±200 µA
::• Current resolution: 1 µA
::• Displayed resolution limited to 1 unit

=== Communications and Inputs and outputs terminals ===

::• Daisy Chain connectors: Twin DB9 connectors allow two (2) ER430 units to be daisy chained together.
::• USB Port: Compatible with USB1 & USB 2 and provides, communications facility to PC’s
::• Output and Meters front panel connectors: SHV (Safe High Voltage) type
::• 20 Way 3.5mm Green screw terminal:
:::: - Four Digital I/O lines
:::: - Trigger TTL or CC
:::: - Four Voltage Monitor signals
:::: - FourCurrent Monitor signals.
::• System/Chassis Earth terminal: 4 mm screw terminal.

=== System Indicators ===

The following LED front panel displays are available:

::• System Status (RGB LED)
::: GREEN when “on line”

::• Interlock (amber LED)
::: FLASHING = Interlock open, unit disarmed, arming not allowed.
::: OFF = Interlock OK, unit disarmed
::: ON = Interlock OK, unit armed and ready for operation.

::• Meter Function (RGB LED)
:::: GREEN = Safe (disconnected)
:::: YELLOW = Current Mode
:::: BLUE = Voltage Mode

::• HV Supply Function (RGB LED)
:::: GREEN = Safe (supply disconnected)
:::: YELLOW = Current Mode
:::: BLUE = Voltage Mode

::• HV Supply Status (RGB LED)
:::: OFF = supply disconnected
:::: ON = supply connected and active.

=== Physical ===
::• Dimensions (w x h x d): 200 x 65 x 250 mm (7.9 x 2.6 x 9.8 inch)
::• Weight: 3.00 kg packed
::• Operating temperature: 0 - 35ºC
::• Humidity: 10 to 80% non condensing
::• Power: 9 - 16 V @ 2 A maximum supplied by mains powered AC/DC converter (supplied)

== Legal and Warranty ==

=== Trademarks and Copyright ===
Sequencer, HV Sequencer, and Chart are trademarks of eDAQ Pty Ltd.
Windows XP, Vista, and Windows 7, Windows 8 and Windows 10 are trademarks of Microsoft Corporation.
This document is Copyright © July 2015. This document, or sections thereof, may be copied by the owners or users of an eDAQ Quad MF isoPod for their private use. Otherwise no part of this document may be
reproduced by any means without the prior written permission of eDAQ Pty Ltd.

=== Responsibilities ===

You and any others using any eDAQ product agree to use it in a sensible manner for purposes for which it is suited, and agree to take responsibility for their actions and the results of their actions. If problems arise with an eDAQ product, eDAQ will make all reasonable efforts to fix them. This service may incur a charge, depending on the nature of the problems, and is subject to the other conditions in this Agreement.

=== Hardware Warranty ===

eDAQ Pty Ltd warrants this device, to be free of defects in material and workmanship for three years from the date of purchase. Note that this does NOT include external cables and electrodes that are subject to 'wear and tear' and manufacturing defects should be reported within 90 days of purchase. eDAQ Pty Ltd will repair or replace defective equipment as appropriate. To obtain a warranty repair/replacement you must first notify us before return of the instrument and we will issue you with a RAN (return authorisation number). You must ship the defective product at your expense. We will pay return shipping. The product should be packed safely (preferably in its original packaging) and have the RAN on the shipping label. Returns sent without a RAN may be refused delivery.

This warranty does not cover hardware that has:
:• been modified by the user in any way;
:• been subjected to unusual physical, electrical, or environmental stress. This includes damage due to faulty power sockets, inadequate earthing, or power spikes or surges;
:• been damaged because of incorrect wiring to ancillary equipment, or because of substandard, connectors or cables; or
:• had the original identification marks removed or altered.

=== Software License ===

You have the non-exclusive right to use the supplied eDAQ software (Sequencer, Chart etc). Your employees or students, for example, are entitled to use it, provided they adhere to this agreement.
Each separate purchase of the eDAQ software licenses it to be used on two computers, more than two copies must not be used simultaneously. Departmental/company licences are available if you wish to run more than two copies simultaneously.

=== Technical Support ===

Please register your unit to receive technical support.

Technical assistance is available via email. Please describe the problem with as much detail as possible. Include a small example data file, if appropriate. Please also state:
: • the model and serial number of your EDAQ system.
: • the type of computer and operating system being used (for example Windows XP, Vista, Windows 7, 8, or 10)
: • the software version you are using (for example Chart v5.5.2)

We endeavor to answer all your questions, but in some cases, for example where the problem relates to the other equipment that you are using, a nominal fee may be charged.

=== Jurisdiction ===

eDAQ Pty Ltd is bound by the laws of New South Wales in Australia, and any proceedings shall be heard by the Supreme Court of New South Wales in Australia.

=== Disclaimer ===

eDAQ reserves the right to alter specifications of hardware and software without notice. No liability can be accepted for consequential damages resulting from use of eDAQ products.