Keysight 11683A - Description; Figure 1-2 Four-Wire Cable

General Information 1
Keysight 11683A Operating and Service Manual 19
Description
The 11683A Range Calibrator is used to verify proper operation of compatible Power Meters such
as the Keysight Model 435A. The Power Meter's rangeto-range accuracy and proper auto-zero
operation can be easily verified. The 11683A can supply a full-scale test signal to the Power Meter
for each Range Switch setting.
When set to CALIBRATE, the FUNCTION switch applies a dc voltage to the Power Meter; the input
is grounded in STANDBY. The POLARITY switch increases ease of testing and adjusting the Power
Meter auto-zero feedback circuit.
Figure 1-2 Four-wire cable
Table 1-3 Recommended test equipment
Instrument Critical specification Model Use
Digital voltmeter
Readout: 5 digits
DC measurement
Range: 100 mV to 100 V full-scale
Accuracy: ± 0.02%
Resistance measurement (four-wire measurement capability)
Range: 100 Ω to 10 kΩ full-scale
Sensitivity: 1mil
Accuracy: ± 0.02%
3455A
Performance,
Adjustment,
Troubleshooting
Oscilloscope
Vertical amplifier
Bandwidth: DC to 5 MHz
Deflection factor: 50 mV /division minimum
Attenuator accuracy:± 2%
Time Base
– Time span/division: 1 ms to 1 s
– Time base accuracy: ± 3%
180C/1801A/1821A
Adjustment,
Troubleshooting
Four-wire cable Recommended length: 5 feet maximum See Figure 1-2 Performance