iL Series User Manual
64
Rev B
California Instruments
The following procedures assume you understand how to operate front panel keys
as explained in chapter 4.
Step Action
Display
Enable Calibration Mode
1.
Reset the unit by selecting Output, scrolling to the
*RST command, and pressing Enter.
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.)
*RST
2.
To begin calibration press Shift Calibration and
scroll to the CAL ON command.
CAL ON 0.0
3.
Enter the calibration password from Entry keypad
and press Enter. If the password is correct, the
Cal
annunciator will come on. If an internal switch has
been set to prevent the calibration from being
changed or the password is incorrect,
OUT OF
RANGE
appears. (See section 6.4.4)
OUT OF RANGE
4.
If the active password is lost, the calibration
function can recovered by setting an internal switch
that defeats password protection. (See section
6.4.4.)
OUT OF RANGE
Calibrating and Entering Voltage Calibration Values
5.
Connect the DVM (ac volts mode) directly to the AC
source via the ratio transformer shown in Figure 19.
Do not connect the load resistor or current shunt
6.
Press Shift Calibration, scroll to the CAL VOLT AC
command, and press Enter.
CAL:VOLT: AC
7.
Press Shift Calibration, scroll to the CAL LEV P1
command, and press Enter to select the first
calibration point.
CAL:LEV P1
8.
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
9.
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
10.
Press Shift Calibration, scroll to the CAL DATA
command, and use the Entry keypad to enter the
second voltage value displayed on the DVM.
CAL:DATA 0.00
11.
Repeat steps 9 and 10 for the third and fourth
voltage values (P3 and P4). The AC source is now
holding the voltage calibration constants in RAM
12.
Press Phase Select to select the next phase and
repeat steps 5 through 11 for phases 2 and 3 of
three phase sources. (The phase annunciators
indicate which phase is active.)
Calibrating Realtime Voltage (4801iL only)
13.
Press Shift Calibration, scroll to the CAL VOLT
RTIME command, and press Enter.
CAL:VOLT:RTIME
Summary of Contents for iL Series
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