Model 2790 SourceMeter
®
Switch System Reference Manual
16-25
7.
Source the nominal full-scale resistance values for the 100
Ω
-10M
Ω
ranges summa-
and verify that the readings are within calculated limits.
8.
Connect the Model 7702 CH1 and CH21 terminals to the calibrator as shown in
.
9.
Disable external sense on the calibrator.
10.
Set the Model 2790 for the 100M
Ω
range.
11.
Source a nominal 100M
Ω
resistance value and verify that the reading is within cal-
culated limits for the 100M
Ω
range.
12.
Press the OPEN key to open Channel 1.
Figure 16-13
Connections for Model 7702 resistance verification (100M
Ω
range)
Table 16-12
Limits for Model 7702 resistance verification
Ω
Range
Nominal
resistance
Nominal reading limits
(1 year, 18°C to 28°C)
Recalculated limits**
100
Ω∗
1k
Ω
10k
Ω
100k
Ω
1M
Ω
10M
Ω
100M
Ω
100
Ω
1k
Ω
10k
Ω
100k
Ω
1M
Ω
10M
Ω
100M
Ω
99.9880 to 100.0120
Ω
0.999894 to 1.000106k
Ω
9.99894 to 10.00106k
Ω
99.9890 to 100.0110k
Ω
0.999890 to 1.000110M
Ω
9.99370 to 10.00630M
Ω
99.4770 to 100.5230M
Ω
__________ to __________
Ω
__________ to __________ k
Ω
__________ to __________ k
Ω
__________ to __________ k
Ω
__________ to __________ M
Ω
__________ to __________ M
Ω
__________ to __________ M
Ω
* Enable OCOMP for 100
Ω
range.
** Calculate limits based on actual calibration resistance values and Model 2790 and Model 7702 one-year resistance
accuracy specifications. See
Verification limits
.
TE122
TE121
CH1
CH21
OUTPUT
HI
OUTPUT
LO
Calibrator (Output 2-wire Resistance)
NOTE
Use shielded cables to minimize
noise. Disable calibrator external
sense mode.
Model 7702
Summary of Contents for 2790
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