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Example 5. 9825A Sample Program, Constant Voltage - Bipolar Mode
Explanation:
1:
Sets fixed point format with three digits to the right of the decimal. This allows for better-accuracy in.the
adjustments specified in lines 7 and 11.
4-13:
SibradoTroutine using VOLTAGE (GAIN) control on BPS/A and the ZERO and D/A FULL SCALE ADJUST
controls on the 59501B. Note that in line 10 an average value is calculated so that the adjustment can be
completed in the minimum number of steps.
14-15:
BPS/A output is programmed to zero. Load is connected to BPS/A output terminals.
16-
User inputs desired output voltage (+ or —) on the keyboard.
17:
If voltage requested (line 16) is too high, "Voltage too high" appears on the display for three seconds, and
then the program returns to line 16.
18-19:
Proper range is selected and correct data word value (N) is calculated to represent the voltage requested.
20:
Data word (N), representing the requested output voltage {+ or -), is sent to the 59501B. Format f4.0
deletes leading spaces and z suppresses the carriage return/line feed characters. If leading spaces are not
deleted and the CR/LF characters are not suppressed, the output will go to an undesired value
(see paragraph 3-34).
3-16
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