Temperature Monitor Signal; External Signal In - Gamry Instruments Interface 1010 Operator's Manual

Caution:
Floating Ground. Connection of signal to an earth-ground-referenced apparatus can compromise the
Interface 1010's ability to float, and invalidate data collected on earth-grounded cells.
The E 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 will be further reduced if a coaxial cable is connected to
the BNC. Its output impedance is approximately 1 kΩ in parallel with 47 pF.

Temperature Monitor Signal

The Interface 1010 offers temperature testing in the range of –50 to 600°C. A 1000 Ω (at 0°C) platinum RTD
(resistance temperature detector) according to European standard (DIN/IEC 60751 or simply IEC751) is used for
the temperature measurement. The RTD sensor contains a resistor that changes resistance as its temperature
changes. The RTD is excited with a precision 1 mA current source. The A/D normally reads 1.000 V when the
RTD is at 0°C, and its resistance change is 3.85 Ω/°C for the temperature range 0 to 100°C. Platinum RTD
elements are available in two types of constructions: thin-film and wire-wound. Platinum RTDs offer several
advantages:
• A wide temperature range (–50 to 500°C for thin-film, and –200 to 850°C for wire-wound)
•
Good accuracy (better than thermocouples)
•
Good interchangeability
•
Not affected by corrosion or oxidation
•
Long-term stability
Gamry will not calibrate an RTD you use. If you require higher accuracy for the temperature
reading, you must perform an RTD calibration. Any manufacturer of the RTDs can perform such service. As
an alternative, you may buy a more accurate RTD sensor, such as Class A, AA or 1/10DIN (temperature
range permitted).
The RTD resistance is read using a two-terminal connection. The RTD is wired between Pins 3 and 4 of the
Monitor Connector. A current source applies 1 mA between these pins. A ∑∆ A/D converter continuously reads
the voltage-difference between the pins.

External Signal In

External Signal In allows you to add a voltage to the Interface 1010's Signal Generator. It is a two-wire
differential signal with the negative side connected to the Interface 1010 floating ground. This signal is summed
with the other signal-generator sources, including the Bias DAC, the Scan DAC, and the DDS output.
Caution:
1010 Floating Ground. Connection of signal to an earth-ground-referenced apparatus can compromise the
Interface 1010's ability to float, and invalidate data collected on earth-grounded cells.
I/O Connectors
The negative side of the E Monitor signal is connected to the Interface 1010
The negative side of the External Signal In signal is connected to the Interface
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