14-14 Calibration
14. Note and record the DMM voltage reading, then calculate the current from the voltage
reading and actual resistance value. Send that current value as the parameter for the
following command:
:CAL:PROT:STEP8 <Calcula
ted_Current>
Example: for the Model 2306/2306-VS, with a c
urrent of 4.5mA, the command would
be:
:CAL:PROT:STEP8 4.5E-3
Example: for the Model 2306-PJ, with a current of 450mA, the command would be:
:CAL:PROT:STEP8 450E-3
Step 3: Perform Channel #2 (charger channel) calibration steps
1. Connect the OUTPUT #2 SOURCE, SENSE, and DVM IN terminals to the digital
multimeter. Use the same general connections shown in Figure 14-1, but make your
connections to the OUTPUT #2 terminals. (Connect SOURCE +, SENSE +, and DVM
IN
+ to DMM INPUT HI; SOURCE -, SENSE -, and DVM IN - to DMM INPUT LO.)
2. Send the following command to output 14V:
:CAL:PROT:STEP9 14
3. Note and record the DMM reading, then send that reading as the parameter for the
follo
wing command:
:CAL:PROT:STEP10 <DMM_Readin
g>
For example, if the DMM reading is 14.012V, the command would be:
:CAL:PROT:STEP10 14.012
4. Note and record a new DMM reading, then send that reading
as the parameter for the
following command:
:CAL:PROT:STEP11 <DMM_Readin
g>
5. Send the following command for DVM full-scale calibration:
:CAL:PROT:STEP12
6. Connect the Model 2306 OUTPUT #2 SOURCE terminals to the DMM volts input and
charac
terized 4Ω resistor. Use the connections shown in Figure 14-2, but make your con-
nections to the OUTPUT #2 terminals instead. Be
sure to observe proper polarity
(SOURCE + to INPUT HI; SOURCE - to INPUT LO).
7. Make sure the digital multimeter DC volts function and auto-ranging are
still selected.
8. Send the following command to output 1.9A for 5A full-scale calibration:
:CAL:PROT:STEP13 1.9
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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