I Monitor Signal; E Monitor Signal - Gamry Instruments Interface 1010 Operator's Manual

Pin Name
1 Signal Ground
2 Signal Ground
3 RTD Positive
4 RTD Negative
5 E_sig
6 EXT_SIG
7 I_Sig
8 [not connected]
9 [not connected]

I Monitor Signal

The I Monitor signal represents the output of the Interface 1010 current measurement circuit. It can be treated
as a two-wire differential signal with the negative side connected to the Interface 1010 Signal Ground. With the
exception of the filtering described below, it is the raw signal with no offset or gain applied. The effective
bandwidth of the current signal falls as you reach the nA and pA current ranges. IE Stability capacitors further
slow the response.
Caution:
Floating Ground. Connection signal to an earth-ground-referenced apparatus can compromise the
Interface 1010's ability to float, and invalidate data collected on earth-grounded cells.
Scaling on this signal is 3 V for  the nominal full-scale current on the selected current range. Cathodic
currents cause a positive output voltage. If the software is auto-ranging the current-range selection, this signal is
discontinuous at each range change.
The I Monitor signal is filtered using an RLC circuit. It has a bandwidth of approximately 150 kHz when
connected to a high-impedance input. This bandwidth is further reduced if a coaxial cable is connected to the
BNC. Its output impedance is approximately 1 kΩ in parallel with 47 pF.

E Monitor Signal

The E Monitor signal is derived from the output of the Interface 1010's differential electrometer circuit. It can
be treated as a two-wire differential signal with the negative side connected to the Interface 1010 Signal
Ground. With the exception of the filtering described below, it is the raw voltage signal, with no offset or gain
applied. With the exception of the filtering described below, it is buffered representation of the voltage
difference between the white and blue cell cable leads.
I/O Connectors
Table C-2
Monitor Connector
Use
A high-quality floating ground. Signals are relative to this ground
Another high-quality floating ground. Signals are relative to this
ground
The Positive RTD Input. 1 mA flows between this pin and Pin 4.
The Negative RTD input. Connected to the Interface 1010's floating
ground.
E Monitor Signal, ±6.5536 V full scale
External Signal In, ±6.5536 V full scale
I_Monitor Signal, ±3.2678 V full scale
The ground side of the I Monitor signal is connected to the Interface 1010
78