Sequoia / Tahoe Series User Manual California Instruments
M447352-01 REV-A 295
SYNC:STAT?
This should give a response as SYNCED.
9.3.3 Procedure For DC Synchronization.
1. Change the operating mode of Source to DC. Set the voltage and Current limit for the Source.
Ensure the programmed current limit of the Source must be higher than the set current of
the Sequoia unit. Make sure the Voltage Source and Sequoia unit voltage ranges are the
same.
2. Use the below commands for setting the Sequoia unit.
SYNC:VOLT <numeric value > (numeric value is same as the set voltage of the Voltage
Source)
Note: Voltage values are to be programmed as per the respective test cases.
3. Turn ON the output of the Source (Voltage source).
4. Query the below command for getting the status of the Sequoia unit.
SYNC:STAT?
This should give a response as IDLE
5. Synchronize the Sequoia unit with the Voltage Source by sending the below command or
pressing Sync button from the front panel, refer to the below image.
SYNC:START
6. Verify the status using the below command.
SYNC:STAT?
This should give a response as SYNCED.
9.3.4 AC Function DC Current Zero Alignment, AC-Mode
1. Cycle the AC input power to the Sequoia unit off and then on.
2. Set Voltage Source (connected at Sequoia unit load side) Mode AC, voltage to 150V, frequency
60Hz, and current limit 20A.
3. With the Power Analyzer, monitor the current at the Sequoia unit output.
4. Enter the calibration password with the SCPI command, CAL:PASS “5000”.
5. Send the following SCPI command to select Phase-A:
INST:NSEL 1
6. Send the following SCPI commands to the power source; the ALC could be either off (166 VAC
range selected):
VOLT:RANGE 166
CURR:ALC OFF
MODE AC
SYNC:FREQ 60
SYNC:VOLT 150
CURR:PHASE 0
CURR 0
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