Keithley 2015 Service Manual

Troubleshooting 4-23
Table 4-10
DCA signal switching
Table 4-11
ACA signal switching
Tables 4-12 through 4-16 can be used to trace the analog signal through the A/D multiplexer
(U163) to the final amplifier stage. These tables show the MUX lines (S3, S4, S6, S7) that are
selected for measurement during the SIGNAL phase of the multiplexing cycle. Also included
are switching states of analog switches (U129) that set up the gain for the final amplifier stage
(U166).
Table 4-12
DCV signal multiplexing and gain
Table 4-13
ACV and ACA signal multiplexing and gain
Range K103
10mA
100mA
1A
3A
ON
OFF
OFF
OFF
Range K103
U105
pin 16
U105
pin 1
U111
pin 16
U105
pin 8
U103
pin 16
U103
pin 1
1A
3A
OFF
OFF
ON
ON
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
Range
Signal
(U163)
U129
pin 1
U129
pin 8
U129
pin 9
Gain
(U166)
100mV
1V
10V
100V
1000V
S4
S4
S4
S4
S4
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
×100
×10
×1
×10
×1
Range
Signal
(U163)
U129
pin 1
U129
pin 8
U129
pin 9
Gain
(U166)
All S3 ON OFF OFF ×1

Keithley 2015 Specifications

General

Model	Keithley 2015
Category	Multimeter
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Frequency Range	3 Hz to 300 kHz
Resistance Range	100 MΩ
DC Current Range	3 A
DC Current Accuracy	0.05%
AC Current Range	3 A
Display	5.5 digit
Connectivity	GPIB
Power Supply	100 V to 240 V AC, 50 Hz to 60 Hz