1732/1734/1736/1738/3540 FC
Calibration Manual
26
173x Auxiliary Input Adapter Verification (1732/1734/1736/1738 Only)
The Auxiliary Input Adapter has a 1000:1 divider that can be verified with a calibrator and an 8846A.
To connect to the Connector pins, use a banana-to-pin adapter (Pomona Electronics 4690 is
recommended). See Table 15 and Table 16.
Table 15. 173x AUX Adapter Pin-out
Pin Signal
1
AUX 1 +
2
AUX 1 -
3
AUX 2 +
4
AUX 2 -
Table 16. 173x AUX Voltage Divider Input
Input Range
Intrinsic Accuracy AUX Adapter + Instrument
(% of Reading + % of Range)
Direct Input ±10 V see instrument specification
Voltage divider input ±1000 V ±(0.7 % + 0.2 V)
Note: Reference Conditions for attachment: Individual use of AUX1 or AUX2, or galvanic-isolated sources (for example, dc cur-
rent clamps) at AUX1 and AUX2.
Environmental Reference Conditions: 23 °C ±5 °C, instrument operating for at least 30 minutes, no external electrical/
magnetic field, RH <65 %.
210M
Voltage Divider Input / 1000V
+
-
Direct Input / 10V
+
-
Terminal blocks
210M
AUX1
210M
+
-
+
-
210M
173x
Auxiliary
Inp ut
AUX1
Safet y pl ugs
Voltage Divider Input / 1000V
Direct Input / 10V
Terminal blocks
AUX2
Safet y pl ugs
R = 2.92M
in
AUX2
XXX
511k
511k
664k
XXX
511k
511k
664k