Figure 1-16 Connections For Model 7700 Ratio And Average Verification - Keithley 2700 Service Manual

4.
5.
6.
7.
Figure 1-16
Connections for Model 7700 ratio and average verification
CH1
Model 7700
CH4
INPUT SENSE CH1 CH2 CH3
H L H L H L H L
H L H L H L H L
H L H L H L H L H L H L
CH21 CH22 CH11 CH12 CH13 CH14 CH15 CH16
CH11
Select the Model 2700 RATIO function (press SHIFT then RATIO).
Set the calibrator output to 1.00000V DC, and allow the reading to settle.
Verify that the ratio reading is between 0.9999926 and 1.000074.
Press OPEN to open Channel 1.
CH5 CH6
CH7 CH8 CH9 CH10
H L H L H L H L
INPUT
(V, 2 WIRE)
SENSE
(OHMS, 4 WIRE)
H L H L H L H L
CH17 CH18 CH19 CH20
H L H L
Performance Verification
DC Voltage Calibrator
Output
HI
Output
LO
Note: Use shielded cables to minimize noise.
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