iL Series User Manual
California Instruments
Rev B
65
Step Action
Display
14.
Press Shift Calibration, scroll to the CAL LEV P1
command, and press Enter to select the first
calibration point.
CAL:LEV P1
15.
Press Shift Calibration, scroll to the CAL DATA
command, and use the Entry keypad to enter the
voltage value displayed on the DVM.
CAL:DATA 0.00
Calibrating the OVP trip point
16.
Press Shift Calibration, scroll to the CAL VOLT
PROT command, and press Enter.
CAL:VOLT: PROT
17.
Wait for the power supply to compute the OVP
calibration constant. The display returns to Meter
mode when the calculation is complete.
If the supply goes unregulated or into CC mode
during OVP calibration, an error occurs.
If the computed constant is out of the acceptable
range, an error occurs.
The AC source is now holding the new OVP
calibration in RAM.
NOT CV MODE
DOES NOT CAL
18.
Press Phase Select to select the next phase and
repeat steps 16 and 17 for phases 2 and 3 of three
phase sources. (The phase annunciators indicate
which phase is active.)
Calibrating and Entering Current Calibration Values
19.
Connect the appropriate current shunt and load
resistor as shown in Figure 19. Connect the DVM
(ac rms mode) across the current shunt. If you are
calibrating a three-phase model, make sure that the
phase 1 (
Ø1
) annunciator is lit. Phase 1 is the
power-on default. (Press Phase Select to select a
different phase.)
20.
Press Shift Calibration, scroll to the CAL CURR AC
command, and press Enter
CAL:CURR:AC
21.
Press Shift Calibration, scroll to the CAL LEV P1
command, and press Enter to select the first
calibration point
CAL:LEV P1
22.
Press Shift Calibration and scroll to the CAL DATA
command. Wait for DVM reading to stabilize.
Then read DVM and compute the first current value
(DVM reading
÷
shunt resistance). Use the Entry
keypad to enter the first current value.
CAL:DATA 0.00
23.
Press Shift Calibration, scroll to the CAL LEV P1
command, use
↑
and
↓
to scroll to the P2
parameter, and press Enter. This selects the
second calibration point
CAL:LEV P2
24.
Press Shift Calibration and scroll to the CAL DATA
command. Wait for DVM reading to stabilize.
Then read DVM and compute the second current
value (DVM reading
÷
shunt resistance). Use the
Entry keypad to enter the second current value.
CAL:DATA 0.00
Summary of Contents for iL Series
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