HP 59501A Operating And Service Manual page 29
Hp-ib isolated d/a power supply programmer
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Also See for 59501A:
- Operating manual (16 pages) ,
- Operating and service manual (54 pages)
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3'81
Bipolar Mode
3-82
Calibration. The ZERO ADJUST allows the nega¬
tive limit to be set to -10V when the 59501A is program¬
med to zero {2000). The D/A FULL SCALE ADJUST
allows the positive limit to be set to +9.98V when the
59501A is programmed to maximum (2999). This range
results in a resolution of 19.98V/999 or 20mV per program¬
ming step. Calibration procedures for operating in the
bipolar mode are provided in paragraph 5-30.
3-83
Sample Program. A sample program for control ¬
ling the bipolar output of the 59501A is given in example
9. This program is similar to the unipolar mode program
given in example 8 except that it allows keyboard input
of bipolar voltage from --10V to t9-98V.
Example 9. 9825A Sample Program, 59501A Bipolar Output
0^
"BIPOLFIR Vol tcL'T ■ Outpiji:
17900111 " : 1
cisp
"Set
090010 to BipoiRR";;St P
9 "
C i'l 0
I'''
?
"
U t;
"
'
!;/ /C iCl "
■ ! ■ c L
" ii ;et
f'<
cud ?;i "SIJS"" "00i 10 "
611
ent
'■ i::"nte!'"
DVII
' 6' ij i, I' ' ' ! S '' 1! 7! :i 0 P'
X , ■ S' 17
7' 11
(10+R)
i.,j f cI'"
" > "■ 9 ' i St h
•iCl "
0 " : 1 S '/ i"
, 7;; S;:; IIP'977;//;
' t Q0 ' hX'Jih" H DO. it
3000? 'ji;
11
1:3 »
:i.
i
'v' (. 9 9 8 (.i u v:!
■ > . 1 jl 1 0 0 11 -I- j. 0 'f ( 'i
i j
: : 00;;:::"i- : : 0 . 1 ' -1'
1 'St. ij
I.
1 ' • ) 11
2900"i
-1
rvt k (V+ i 0 ' /. 02 +» 01J
i5 5
fi-rr.
I,f4,0.z;w " t-
r'' kl El 1^
1
1' 0 1' 'S t 0
1 . ! ,
.™
Explanation;
1:
Sets fixed point format with three digits to the right of the decimal. This allows for better accuracy when
performing the adjustment specified in line 8.
2:
Setup instruction.
3-10:
Calibration routine using ZERO ADJUST and D/A FULL SCALE ADJUST controls on the 59501 A. Note
that in line 7, an average value is calculated so that the adjustment can be completed in the minimum number
of steps.
11:
User inputs desired output voltage (-10 to +9.98) on keyboard.
12:
if the voltage requested is too high, "Voltage too high" appears on the display for three seconds, and then
the program returns to line 11.
13-14:
Proper range is selected and correct data word value (N) is calculated.
15:
Data word (N) representing the desired positive or negative output voltage is sent to the 59501 A. Format
f4.0 deletes leading spaces and z suppresses carriage return/line feed characters. If leading spaces are not
deleted and CR/LF characters are not suppressed, the output will go to an undesired value (see paragraph 3-36).
3-17
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