Keithley 6517B Reference Manual

Section 14: SCPI command reference Model 6517B Electrometer Reference Manual
14-102 6517B-901-01 Rev. C / August 2015
Questionable event register:
Bit B0, volts summary (Volt): Set bit indicates that an invalid volts measurement has occurred (PTR),
or a subsequent valid volts measurement has occurred (NTR).
Bit B1, amps summary (Amp): Set bit indicates that an invalid amps measurement has occurred, or a
subsequent valid amps measurement has occurred (NTR).
Bits B2 and B3: Not used.
Bit B4, temperature summary (Temp): Set bit indicates that an invalid external temperature
measurement has occurred (PTR), or a subsequent valid temperature measurement has occurred
(NTR).
Bit B5, B6, and B7: Not used.
Bit B8, calibration summary (Cal): Set bit indicates that an invalid calibration constant was detected
during the power-up sequence (PTR). The instrument instead uses a default calibration constant.
This error clears after successful calibration of the instrument.
Bit B9, humidity summary (Hum): Set bit indicates that an invalid relative humidity measurement has
occurred (PTR), or a subsequent valid temperature measurement has occurred (NTR).
Bit B10, ohms summary (Ohm): Set bit indicates that an invalid ohms measurement has occurred
(PTR), or a subsequent valid ohms measurement has occurred (NTR).
Bit B11, coulombs summary (Coul): Set bit indicates that an invalid Coulombs measurement has
occurred, or a subsequent valid coulombs measurement has occurred (NTR).
Bit B12, sequence test summary (Seq): Set bit indicates that a sequence test has been aborted
(PTR).
Bit B13: Not used.
Bit B14, command warning (Warn): Set bit indicates that a Signal Oriented transition filter Command
parameter has been ignored (PTR), or a subsequent Signal Oriented transition filter Command has
executed successfully (NTR).
Bit B15: Always zero.
Whenever a questionable event occurs, the ERR annunciator turns on. The annunciator turns off
when the questionable event clears.
Figure 117: 4200_QuestionableEventRegister

Keithley 6517B Specifications

General

Input Impedance	>200 TΩ
Electrometer Type	Electrometer/High Resistance Meter
Current Measurement Range	20 fA to 20 mA
Display	Vacuum Fluorescent Display
Communication Interfaces	IEEE-488 (GPIB), RS-232
Power Supply	100 V / 120 V / 220 V / 240 V; 50 Hz / 60 Hz
Resistance Measurement Range	Up to 200 TΩ