Keithley 2010, Руководство по обслуживанию

Страница: 22 / 134

Verifying AC current
Check AC current accuracy by applying accurate AC current at specific frequencies from the
AC current calibrator to the Model 2010 input and verifying that the displayed readings fall
within specified limits. Follow these steps to verify AC current:
1. Connect the Model 2010 AMPS and INPUT LO jacks to the calibrator as shown in
Figure 1-4 .
2. Select the AC current function by pressing the ACI key.
3. Set the Model 2010 for the 1A range.
4. Source 1A and 2.2A, 1kHz full-scale AC currents as summarized in Table 1-5 , and verify
that the readings are within stated limits.
Table 1-5
ACI limits
ACI
range
Applied DC
current
Reading limits
(1 year, 18°C–28°C) 1kHz
1A
3A 1.000000A
2.20000A
0.99860 to 1.00140A
2.1949 to 2.2051A
2000 MULTIMETER
!
R
5700A Calibrator (Output AC Current)
Output HI
Input
LO Output
LO
Model 2010
Amps
Figure 1-4
Connections for AC
current verification
Performance Verification 1-9