Ametek Sorensen Asterion DC ASM, Руководство по программированию

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Asterion DC Multioutput Series
Programming Manual
M330517-01 Rev C 13-129
Current Programming Calibration
Preparation:
1. Power down the Unit Under Test (UUT) and remove the input power for safety.
2. Allow 5 minutes for the energy in the output to bleed down to a safe level.
3. Attach the precision
shunt between the power supply’s output terminals.
4. Place the electronic load in Constant Resistance mode.
R = (FSV * 80%) / FSC * (Present DAC value / MAX DAC value)
If the UUT is an ASA Model:
FSV = Maximum rated power / Current rating.
If the UUT is an ASM Model:
FSV = Full scale rated voltage.
5. Attach the voltmeter across the shunt.
6. Apply input power and power up the UUT.
7. After the UUT has initialized, begin the calibration procedure.
STEP DESCRIPTION
1.
Issue a *CLS command.
2. Issue a *RST command.
3.
Program the supply to unlock the non-volatile memory for calibration value
storage:
CAL<n>:UNLOCK “6867”
4.
Program the overvoltage protection to maximum to prevent nuisance trips:
CAL<n>:OUTP:VOLT:PROT:DAC 65535
(65535 is the max DAC value).
5.
Program the output voltage to full scale to prevent Constant-Voltage operation:
CAL<n>:OUTP:VOLT:DAC 65535
6.
Program the output of the first calibration point by sending the following
command string from the computer:
CAL<n>:OUTP:CURR:DAC 3275
(3275 is the present DAC value for point1)
7. Let the output settle and measure the output current with the current shunt and
the high precision voltmeter; this is value 1.
8.
Enter the actual output current of the first calibration point:
CAL<n>:OUTP:CURR:FIVEPOINT 1 <value 1>
9.
Program the output of the second calibration point by sending the following
command string from the computer: