FRA
FRA mode must be used in conjunction with an FRA-Probe or an FRA-X probe.
Caution
Before activating the FRA mode, no cell must be connected to the main potentiostat. Instead, the FRA-Probe or FRA-X must be connected via the two Probe E/I cables.
Note
When FRA mode is active, the “Potentiostats” tab in Hardware Settings is disabled. No changes can be made to the potentiostats while in FRA mode.
Output
This is where the settings for the external power device are configured. Because Zahner Lab has no direct control over the operating mode of the external device, you must configure the settings for the selected operating mode (galvanostatic/potentiostatic) here.
Scaling Factor
In the Zahner Lab, the scaling factor must be set to the maximum current or voltage range of the external device when the 0–10 V interface voltage is fully utilized.
To directly control the IM7 device via its API interface, the factor must be modified:
\(Factor_{API} = 0.25 / Factor_{Zahner\:Lab}\)
Offset
To correct minor offset errors, the offset of the 10V FRA interface can be adjusted here. A 40 mV offset value corresponds to 1% of the 10V FRA signal.
Voltage Monitor
These settings affect the measured voltage used to calculate the impedance.
Scaling Factor
The voltage ranges depend on the device and can be selected from a list. The corresponding nominal factor is entered for each voltage range. This factor can be easily adjusted to fine-tune the range.
Probe |
Scaling Factor Lab |
Scaling Factor API |
|---|---|---|
10 V (no Differential Probe) |
2 |
2 |
70 V (Differential Probe) |
20 |
20 |
140 V (Differential Probe) |
40 |
40 |
700 V (Differential Probe) |
200 |
200 |
1400 V (Differential Probe) |
400 |
400 |
Offset
The offset of the voltage monitor input can be adjusted. The settings depend on the scaling factor and can be entered as a real voltage value (voltage deviation).
Current Monitor
These settings affect the measured electric current used to calculate the impedance.
Scaling Factor
The current ranges depend on the device and can be selected from a list. The corresponding nominal factor is entered for each current range. This factor can be easily adjusted to fine-tune the range.
Probe |
Scaling Factor Lab |
Scaling Factor API |
|---|---|---|
500 A |
120 |
300e6 |
1000 A |
240 |
600e6 |
2000 A |
320 |
800e6 |
Offset
The offset of the current monitor input can be adjusted. The settings depend on the scaling factor and can be entered as a real current value (current deviation).