AMETEK i-iX Series II - Manual (Page 143)

User Manual California Instruments
i Series II / iX Series II / iM Series II 143
6.4 Routine Output Calibration
Connect the test equipment to the power source as shown in Figure 6-2. If any output
parameter can’t be calibrated refer to the Power Source Gain Adjustment in the Non-routine
Output Calibration section of the manual.
The AC output calibration does not require an AC DVM operating with the highest accuracy.
Either a Fluke 8506A or a HP 34401A may be used. If a HP 34401A is used it must be put into
the slow filter mode.
1. Connect the DVM across the Phase A output terminals and set to VDC mode.
2. To show the OUTPUT CALIBRATION screen for the first time, choose OUTPUT CAL from
the MENU screen.
3. Type 5000 as the password.
4. Press the PHASE key to select the phase to be calibrated.
5. All output adjustments will be made in the OUTPUT CALIBRATION screen.
6. If the VOLT FS coefficient for the selected phase is considerably different from 21000, enter
21000 using the numeric keypad.
7. Program the power source to the AC mode, ALC OFF, 300V AC range and 0.0 V.
8. Close the output relay (Output ON)
9. Adjust the VOLT ZERO for minimal DC offset.
10. Change the DVM to VAC mode and program 240VAC, 60 Hz.
11. Adjust the VOLT FS cal coefficient up or down until the DVM reads 240Vac ± 0.10 VAC.
12. Press the SET key to save the new coefficient values.
13. Repeat this test for the Phase B and C outputs respectively.
Summary output calibration table:
TITLE PROGRAM VALUES CALIBRATION VALUE ADJUST TO
High VAC range DC Zero 300V range, 0.0 V VOLT ZERO 0 ± 15 mv DC
High VAC range Volt FS 240.0 V, 60 Hz VOLT FS
Hint: This value should be
around 21000. For a quick
adjustment first program this
value with the keypad.
240
±
0.10 VAC
Table 6-3: Output Calibration Table