HP 59501A User manual

59501A/HP 85-1 May 1982
SUPERSEDES: NONE
Introductory Operating Guide
for the 59501A D/A-Power Supply Programmer
with the HP 85 Computer
Section Page
(J) Assembling the System.2
Calibration.10
Programming.13
introduction
This note is a guide to the basic operation of the
59501A, as either a remote power supply programmer
or a programmable low level DC voltage source, with
the HP 85 computer.
Familiarity with the HP 85 and its programming
language, BASIC, makes the examples more mean¬
ingful. The HP 85's capabilities are best described in
the manuals listed in the section titled Related
Documents. To acquaint yourself with the HP 85,
review these manuals and use them as a reference as
you gain experience. When you are familiar with the
HP 85, this note will enable you to quickly write pro¬
grams that control the 59501A.
ieisitedi Documents
In addition to the modes of operation described in
this note, the 59501A, and HP 85 have other useful
capabilities. The materials listed below contain com¬
plete documentation for all of these capabilities. They
can be obtained through your nearest Hewlett-Packard
sales office.
59501A Literature
Operating and Service Manual (59501-90001)
HP 85 Literature
Owner's Manual and Programming Guide
(00085-90002)
Quick Reference Guide (00085-90040))
I/O Programming Guide (00085-90142)
HP-IB Literature
Tutorial Description of the Hewlett-Packard
Interface Bus (5952-0156)
© Hewlett Packard Co. 1982
HEWLETT
PACKARD

The programs contained in this note require the
following equipment:
1. 59501A HP'IB Isolated D/A Power Supply
Programmer
2. HP 85 Computer
a. ROM drawer (82936A)
b. I/O programming ROM (00085-15003)
c. HP-IB Interface {82937A)
3. For use as a power supply programmer:
The Hewlett-Packard power supply you wish to
program (see Table 1).
NOTE: A digital voltmeter (DVM) is necessary for pro¬
per calibration. The HP 3465B or equivalent is
recommended.
With all ac power turned off:
1. Make sure that the I/O programming ROM and ROM
drawer are in place in the HP 85.
2. Verify that the address switches on the back panel of
the 59501A are set to 06. (See Figure 1).
ADDRESS SWITCH
\ -X X
Figure 1.
3. Insert the HP-IB interface into one of the HP 85's
rear panel slots.
4. Attach the connector at the free end of the interface
cable to the rear of the 59501A.
Table 1 59501A Power Sypply Conoec
HP
Model
Constant
Voltage
Operation
Constant
Current
Operation
1 HP
Model #
Constant
Voltage
Operation
Constant
Current
Operation
6002A
6012A
6024A
6111A
6112A
Fig.
4
5
6
6
Fig. #22
23
24
*
«
6259B
6260B
6261B
6263B
6264B
Fig. # 29
29
29
30
31
6113A
6
*
6266B 15
30
6114A
7 25
6267B 14 31
6115A
7 25 6268B
13
29
6116A
6
*
6269B 13
29
6177C
»
26 627 IB 15 30
6181C
*
26
6274B 14 31
6186C
*
26
6281A 8
27
8 27 6282A 16
32
I 6203B
8
27 6284A
8
27
1 6205C
9
4
6286A 16 32
1 6206B
10
»
6289A 8
27
1 6207B
8 27
6291A
16
32
1 6209B
11 27 6294A 8
27
1 6227B
12 28
6296A
16
32
1 6228B
12 28
6299A
8
27
1 6253A
8
27 6428B 17
*
6255A
8 27
6433B
17
*
HP
Constant
Constant
j Mode! #
Voltage
Current
Operation
Operation
6434B Fig. # 17
Fig.# *
6438B
17
*
6439B
17
*
6443B
17
6448B 17
*
6453A
18
33
6466B
18
33
6459A
18
33
6464C
19
34
6466C
17
34
6469C
17
34
6472C
17
34 1
6475C
17
34 j
6477C
17
34
6479C
17
34
6483C
17
34
6824A 20
*
6825A 21
35
6826A 21
35
6827A
21
35
•This mode is not available
2

5. For operation as a power supply programmer:
a. Find the correct wiring diagram below, cor¬
responding to power supply model number, and
either CV or CC mode of operation. (See Table 1).
b. Arrange the barrier strip jumpers on the power
supply as illustrated in the diagram.
c. Remove internal jumpers or components from
the power supply if diagram requests.
d. Wire the 59501A to the power supply as il¬
lustrated.
e. Set range switch on power supply if applicable.
f. Before permanently wiring the power supply to
the 59501A, check the power supply operating
and service manual for proper wiring technique
and external components which may be needed
to insure ripple and noise specifications.
6. For operation as a DC source:
a. Wire load to 59501A as illustrated in Figure 2.
Figure 2. Connecting the 59501A as a
Low Level Voltage Source.

0i0j(
EXT
CROWBAR
TRIGGER
6268B
6269B

CURRENT
: PROGRAMS
OUTPUT ••
VOLTAGE
Of
SUPPLY I
* OPTION J30
PC BO (VOLTAGE-
TO ■ " CURRENT-
CONVERTER
J
■ <^PACTORY installed SPECIAL OPTION (J30I
REQUIRED UN POWER SUPPLY.

LV
rrogranrirnfiii
5950IA
Al A2 A3 A4 1 A6
1 ..2 _Q. .2_g_i
d 0 1
Al A2 A3 AA A5 GNOCOM CS/4s OUT \. IN
m
ai2 G_
AI3 _G
rh ®
IF THE 6002A IS EQUIPPED WITH OPTION OOU
MODE SWITCH ON 6002A MUST BE SET TO
CV OR LOCAL.
Figure 22.
Figure 23

RESISTOR AIRJ5 (6I77C, 6I8IC) OR A1R52 (61860
MUST BE REMOVED,
Figure 24.
Figure 26.
5950lil
I14A
I15A
A8 + +S - S - AW
' rj, I 1 I 1 /-> I r~r\ rx
Hi
p 0 0
\j
XT
LOAD
CURRENT POT, MUST BE TURNED DOWN.
5950IA
A( A2 AJ A4 A5 A6
62Q9B 6294A
6253A 62g9A
6281A
Figure 25.
Figure 27,

EXT
CROWBAR
TRIGGER

Before programming a 59501A-power supply
combination, a two-step calibration procedure must
be performed to match the particular power supply
to the 59501 A. A similar calibration is necessary
when the 59501A is used as a low level DC signal
source.
A»1. Unipolar Operation
Unipolar Constant Voltage Programming
Calibration
1. Connect the digital voltmeter between the +S
and -S terminals on the power supply.
2. Set the mode switch on the rear of the 59501A to
UNIPOLAR and turn the POWER SUPPLY FULL
SCALE ADJUST potentiometers fully
counterclockwise.
3. If the power supply has a front panel current con¬
trol, set it to mid-range.
4. Apply power to the HP 85, the 59501A, and the
power supply. Allow a 30 minute warm-up.
Unipolar Constant Current Programming Calibration
1. Connect a resistive load in series with an external
current monitoring resistor across the supply's
output terminals. Refer to Section V of the ap¬
plicable operating and service manual for resistor
values, power ratings, and CC test setup diagram.
2. Connect a digital voltmeter across the current
monitoring resistor.
3. Set the mode switch on the rear of the 59501A to
UNIPOLAR and turn the POWER SUPPLY FULL
SCALE ADJUST potentiometers fully
counterclockwise.
4. On the power supply, set the front panel
VOLTAGE control fully clockwise.
5. Apply power to the HP 85, 59501A and the power
supply. Allow a 30 minute warm-up.
Figure 36 is a program for constant voltage program¬
ming calibration of a 59501A-power supply combina¬
tion. It contains set-up and calibration routines,
automatic range changing, and will prompt with an er¬
ror message if the voltage entered is negative.
Instructions:
Enter the program and press @ . All required
calibration operations are displayed on the CRT of the
HP 85. The maximum desired output voltage (e.g. 20)
should be entered when prompted by the program.
The program automatically uses 99.9% of the value
(e.g. 19.98) to calibrate the 59501 A-power supply com¬
bination. To run the program again, press then
(bun)
I /
iO !
SO ! CALiBRAT'ION FOR
;'J0 ! UNIPOLAR POWFIR SUPPLY
^0 ! VOLTAGE OUTPUT
50 !
60 ! ins»tr'uct:i.ons
70 !
BO CLEAR
90 I)'J:SP "Set the ^•i9S0:i,A node siwltch to ”
100 I)J:SP "UNIPOLAR, then pretf^a CONT , "
110 PAUSE
120 DIBP "Turn the Power Supply Full ScaleAdj
uatwent pot« fully CCW and then press CONT.
" » DIBP
130 PAUSE
140 !
ISO ! User enters MaxlwuM output uoltaqe des
Irosd .
160 !
170 DISP e DISP "Enter the naxlMun output vol
t a g e"
180 INPUT V
190 IF V<'^0 THEN BEEP 8 DISP “NO NEGATIVE VOL
TAGES ALLOWED" @ GOTO 170
20 0 !
210 ! Resolution is calculated
220 f and the MaxinuM desired
230 ! output is changed to
240 ! 99,9% of the voltage
2S0 ! entered on line 170
260 I
27 0 D==V/i0()0
280 V=V-D
290 !
300 i Calibration routine
3i0 !
320 OUTPUT 706 USING "#,4D" ; 2999
330 DISP "Bet the Power Supply Full Scale Adj
ustwent pots for an output of ‘;V> " Voits. "
340 DISP "Then press CONT,"
3S0 PAUSE
360 CLEAR
370 OUTPUT 706 USING " ♦ , 4 D" j 2000
380 DISP "Set the Zero Adjust pot for an out
put of 0 . 000 Volts."
390 DISP "Then press CONT." @ DISP
400 PAUSE
4i0 OUTPUT 706 USING "*,40" j 2999
420 DISP "Adjust the Power Supply Full Sea
le l"'ine Adjust pot for an output of"jV}'‘Vo
Its, "
430 DISP “Then press CONT, "
440 PAUSE
4S0 DISP " "
460 DISP "CALIBRATION COMPLETE"
470 END
Figure 36. Unipolar Power Supply
Programmer Calibration Program.
The program listed in Figure 36 may be modified for
constant current programming calibration of a 59501A
power supply combination. Current must be
substituted for voltage and the output current must be
monitored using the above set-up.
10