Keithley 2000 Repair Manual

Test 601.3 — AMP SHUNT
Bank AMP/OHM
Inputs INPUT HI to AMPS Short
Expected Value <none specified>
Limits <none specified>
Fault Message <none>
Description This phase resets the circuit to a known state and turns the waveform sig-
nal off. Subsequent tests require that the A/D be in the normal operating
mode.
Bit patterns
Bit pattern Register
QQ
87654321
—U106—
101v0010
QQ
87654321
—U109—
11011111
QQ
87654321
—U134—
1v10110v
—U130—
10011101
QQ
87654321
—U121—
10110000
ACDC23
_STB
MUX_STB
IC pins: Q8=11, Q7=12, Q6=13, Q5=14, Q4=7, Q3=6, Q2=5, Q1=4
Troubleshooting 2-59

Keithley 2000 Specifications

General

Digits	6.5
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Resistance Range	100 Ω to 100 MΩ
Connectivity	IEEE-488 (GPIB)
Display Type	VFD