Keithley 2790, Reference Manual

Page: 417 / 568

16-36 Model 2790 SourceMeter
®
Switch System Reference Manual
3. Set the Model 7751/7753 source voltage to 500V as follows:
a. Press SHIFT, CARD, then CONFIG.
b. Select SLOT1: 7751 or SLOT1: 7753, then press ENTER.
c. Select the V-C submenu, then set the source to 500V.
d. Press EXIT to return to normal display.
4. Using the CLOSE key, close the following slot 2 channels: 1, 2, 16, 18, 21, 22,
and 23.
5. Set the math function to display resistance as follows:
a. Press SHIFT then MATH.
b. Select S1VOHMS, then press ENTER.
c. Press EXIT to return to normal display.
6. Recalculate reading limits shown in Table 16-16 (7751) or Table 16-17 (7753)
based on the actual characterized resistance value.
7. Verify that the resistance reading is within the limits calculated in step 6.
8. Repeat steps 1 through 7 for the remaining resistances and voltage source settings
as shown in
Table 16-16 (7751) or Table 16-17 (7753).
Table 16-16
Limits for Model 7751 source-voltage resistance verification
Source
current
Nominal
resistance
Nominal reading limits
(1 year, 18°C to 28°C) Recalculated limits*
500V
500V
50V
50V 1G
Ω
100M
Ω
100M
Ω
10M
Ω
0.98186 to 1.01814G
Ω
98.585 to 101.415M
Ω
94.048 to 105.952M
Ω
9.4747 to 10.5253M
Ω
__________ to __________
Ω
__________ to __________
Ω
__________ to __________
Ω
__________ to __________
Ω
* Calculate limits based on actual characterized resistance values and Model 7751 resistance accuracy
specifications. See Verification limits .