Table 4-13 Dcv Signal Multiplexing And Gain; Table 4-14 Acv And Aca Signal Multiplexing And Gain; Table 4-12 Aca Signal Switching - Keithley 2701 Service Manual

Model 2701 Service Manual
Table 4-12
ACA signal switching
Range
1A
3A
* K103 set states:
Pin 3 to 4
K103 reset states: Pin 8 to 9
Pin 3 to 2
Table 4-13
plexer (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 ampli-
fier stage (U166).
Table 4-13
DCV signal multiplexing and gain
Range
100mV
1V
10V
100V
1000V
Table 4-14
ACV and ACA signal multiplexing and gain
Range
All
U105
K103* pin 16
Reset ON
Reset ON
Pin 8 to 7
through Table 4-17 can be used to trace the analog signal through the A/D multi-
Signal U129
(U163) pin 1
S4 OFF
S4 OFF
S4 ON
S4 OFF
S4 ON
Signal U129
(U163) pin 1
S3 ON
U105 U111 U105
pin 1 pin 16 pin 8
ON OFF OFF
ON ON OFF
U129 U129 Gain
pin 8 pin 9 (U166)
×100
OFF ON
×10
ON OFF
×1
OFF OFF
×10
ON OFF
×1
OFF OFF
U129 U129 Gain
pin 8 pin 9 (U166)
×1
OFF OFF
Troubleshooting 4-17
U103 U103
pin 16 pin 1
OFF OFF
OFF OFF