Hewlett Packard 59501A D/A Power Supply Programmer Operating and Service Manual

ee
HP-IB ISOLATED D/A
POWER SUPPLY PROGRAMMER
MODEL 59501A
HEWLETT
hp PACKARD
Fish
fans
MANUAL CHANGES
Model 59501 A HP-iB Isolated D/A Power Supply Programmer
Manual HP Part No. 59501-90001
Make all corrections in the manual according to errata below, then check the following table for your instrument's
serial number and enter any listed change{s) in the manual.
SERIAL a.
MAKE
Prefix Number CHANGES
Al u Errata
1702A 00150-00244 1
1717A 00245-00798 1,2
18154 00800-up 1,2, 3
ERRATA:
On schematic, Figure 7-3 (Sheet 2}, in output amplifier circuit,
connect one end of C22 to W instead of 777.
On Main Board Assy. AT component location diagram, in +5
regulated supply circuit, add reference designation U32
to pads to the right of C27.
in Table 5-1, page 5-1, change logic probe impedance 10
25k2.
CHANGE 1:
This change incorporates vertically mounted variable resistors
to make calibration easier and to avoid wiper jump.
On page 6-6, make the following changes to the Replaceable
Parts Table. |
R26 change to 25k HP Part No. 2100-3282.
R49 change HP Part No. to 2100-3089.
R61 change to 25k HP Part No, 2100-3282.
On schematic, Figure 7-3 {Sheet 2), change values of R206
and R61 to 25k. |
ERRATA:
On page 6-9, change the HP Part No. of the line cord used in |
the U. S., Canada, Japan, ltaly, and Spain to 8120-1348.
CHANGE 2:
On page 6-8, change the HP Part No. of the A1U32 heatsink
to 59501-00007.
№ CHANGE 3:
Change power transformer (T1 Chassis Electrical} HP Part
No. 59501-80090 to HP Part No. 59501-80091.
4-25-78
SECTION |
GENERAL INFORMATION
1-1 INTRODUCTION
1-2 This instruction manual! contains operating and
service instructions for the HP-IB isolated D/A Power
Supply Programmer Mode! 59501 À. Installation instructions
and sample programs are also provided, The 59501A
allows HP power supplies to be digitally controlled via
the Hewlett-Packard Interface Bus {HP-1B} from a calculator,
computer, or other controller, The digital format is bit
paratiel, byte serial, ASCH coded format. The 59501A
can also be used on the HP-1B as a digitally. programmable
low leve! de signal source. Since the 59501 À can be
controlled {programmed} by various control devices such
as HP 9800 series calculators or the HP-2100 series
computers, hereafter in this manual, the controlling device
will be referred to as the “"controlier”, except when specific
programming examples are provided.
1-3 DESCRIPTION
1-4 The 59501 A is basically a digital-to-analog (D/A)
converter that provides an output voltage in response to
digital data received on the HP-1B. Two programmable
output ranges {1V and 10V} are available. In addition, a
switch on the rear panel allows selecting either a unipolar or
bipolar output mode. The unipolar mode provides a 0 to
‚999V or a 0 to 9.99V output range and the bipolar mode
provides a —1V to +0.898V or a —10V to +8.98V output
range. The 59501A's output can be used as a programming
voltage for controlling a wide range of dc voltages and
currents from HP power supplies or as a source voltage for
testing electronic components such as integrated circuit
packages (105),
1-5 Isolators within the 59501 À protect other instru-
mentation on the HP-1B from damage that could be caused
by power supply outputs, Also, an internal circuit ensures
that the output is held near zero until programmed data is
received. Power supply programming is accomplished
through use of the 59501 A's programmable output voltage
and its front panel adjustments. By making the appropriate
connections between the 58501 A’s rear terminals and the
programming terminals on the supply, the output voltage
{or current, if available) of the power supply can be
programmed from zero to its full rated output. The
59501 A’s front panel adjustments provide fast and easy cali-
bration of power supply outputs. The ZERO ADJUST
1-1
enables the user to correct for small offsets in power supply
response to programmed inputs. The POWER SUPPLY
FULL SCALE ADJUSTMENT (COARSE and FINE)
allows the user to set the maximum output desired from the
power supply when the 59501 À is programmed to its
maximum output. This method of programming is called
voltage programming with gain. Power supply program-
ming is described in greater detail in Section HH,
1-6 Programming the 59501 À is accomplished through
the transmission of four consecutive digits {four ASCH
characters}. The first digit specifies output range and the
next three digits specify the magnitude within the selected
range. The high/low range capability provides a ten to one
improvement in resolution. internal conversion circuitry
enables the 59501 À to produce its maximum output voltage
in approximately 250usec from the time the digital data
is received. Output current up to 10 milfiamps is avaltabie
and is automatically limited to protect the 58501 À and
the user equipment.
1-7 HP-IB CAPABILITIES
1-8 The 59501A has "listener” and "acceptor hand-
shake” HP-1B functional capabilities. The LISTENING
indicator on the front panel provides a convenient means of
monitoring the 59501A's operating status, The S9501A
does not have: controller, talker, source handshake, service
request, device trigger, extended listener, extended talker,
varaliel poll, and remote/locai HP-IB functional capabilities.
AN HP-18 functional capabilities are described in ¡EFE
Standard 488-1975.
1-9 SPECIFICATIONS
1-10 Detailed specifications for the 59501 A are given
in Table 1-1.
1-11 ACCESSORIES
1-12 The System-!11 cabinet accessories listed beiow may
be ordered with the 59501 À unit or separately from your
locai Hewlett-Packard field sales office (refer to list at rear
of manual for addresses). All accessories applicable to
System-H modular cabinets are fully described and illustrated
in the Hewlett-Packard Electronic Instruments and Systems
catalog.
HP Part No.
5061-0088
5061-0094
1460-1345
5061-0054
5061-0076
5061-0055
5061-0096
Two front handles that attach to each side
of 3 1/2" high cabinets.
Kit of lock link hardware for joining together
cabinets of equal depth. Units can be joined
side-by-side or vertically. This kit is required
whenever two {or more} sub-module units
are to be rack mounted side-by-side.
Tilt stand snaps into standard foot supplied
with instrument — must be used in pairs,
Rack mounting kit for one half module width
unit, 3 1/2-inches high. includes one rack
ftange (ear) and one half module width
extention panel {adapter}.
Rack mounting kit for two half module units,
3 1/2" high. Kit includes two rack flanges
{ears}. Also, lock-together kit (5061-0094)
is required for joining the two units together,
The cabinets must also be of equal depth.
Rack mounting kit for two units {one half
module width and one quarter module width).
Kit inctudes one rack flange and one quarter
width extension adapter. Lock-together kit
15061-0094) is required for joining the two
LIFES,
Support shelf for mounting one or more
3 1/2" high units which are half module or
quarter module width. Cabinet depths need
not be equal,
1-2
5061-2021 Front filler panel {one quarter module
width} for 3 1/2" high support shelf.
5061-2027 Front filler panel {one half module width)
for 3 1/2” high support shelf.
1494-0015 Siide kit for support shelves mounted in
HP rack enclosures.
1-13 INSTRUMENT AND MANUAL
IDENTIFICATION
1-14 Hewlett-Packard instruments are identified by a
two part serial number. The first part is the serial number
prefix, a number-lerter combination that denotes the date
of a significant design change and the country of manufac-
ture. The first two digits indicate the year {10 = 1970,
11 = 1971, etc.), the second two digits indicate the week,
and the fetter "A" designates the U. S. A. as the country
of manufacture. The second part is the instrument serial
number; a different sequential number is assigned to each
instrument, starting with 00101,
1-15 If the serial number on your instrument does not
agree with those on the title page of the manual, Change
Sheets supplied with the manual of Manual Backdating
Changes define the difference between your instrument
and the instrument described by this manual.
1-16 ORDERING ADDITIONAL MANUALS
1-17 One manual is shipped with each instrument,
Additional! manuals may be purchased from your Local
Hewiett-Packard fieid office (see the list at the rear of this
manual for addresses). Specify the model number, serial
number prefix, and the HP Part Number provided on the
title page.
Table 1-1. Specifications, Model 59501 A
D/A CONVERTER
DC Output Voitage: Programmable in high or low ranges
within the voltage limits shown below. Output mode is
unipolar or bipolar and is selectable via rear panel switch.
High Low
Unipolar Oto 9.99 Volts G to +.999 Voits
Bipolar — 10 to +9.98 Volts —1 to +.998 Volts
DC Output Current: 10mA
Resofution:
High Low
Unipolar 10mV mV
Bipolar 20mV 2raV
Accuracy: Specified at 23° C+ 5°C
High Low
Unipolar 1% + bmV 1% + 1mY
Bipolar ‚1% + 10mV ‚1% + 2mV
* Stability: Change in output over 8 hour interval under
constant line, load, and ambient following a 30 minute
warm-up,
High Low
Unipolar .04% + bmV 04% +, imV
Bipolar .04% + imV 04% + 2mV
Temperature Coefficient:
High Low
Unipolar .01%” C+.51V/C .01%/ C+ .1mV/°C
Bipolar — .01%/C+.51V/C .01%/ C+.1mV/C
Zero Adjust: Plus or minus 250 millivolts.
D/A Full Scale Adjust: Plus or minus 5%.
Programming Speed: The time required for output to go
from zero to 99% of programmed output change Is 250 sec
{measured with resistive load connected to output terminals).
* Stability is included in accuracy specification measure-
ments over the temperature range indicated.
POWER SUPPLY PROGRAMMING
Programming Network Specifications: In the following spec-
thications, M represents the calibrated full scale value of the
supply being programmed and P represents the actual pro-
grammed output. Note that the full scale value (M) can be
any value within the supply’s output range and is calibrated
with the 58501 A programmed to its maximum high range
output,
Accuracy {Does not include power supply errors):
Specified at 23°C + 5°C,
High Low
Unipolar .0B%M + .25%P .01%M + .25%P
Bipolar О.1%М + ‚25%Р .02%M + ,25%P
Isolation: 600Vdc between HP-1B data lines and output
terminals.
Temperature Coefficient:
High 005%M/ C + .015%P” C
Low 01%M/ C + .015%P” C
Programming Resolution:
High Low
Unipolar 0.1%M 0.01%M
Bipolar 0.2%M 0.02%M
Programming Speed: D/A Conversion Time plus the
programming speed of the power supply.
GENERAL
Input Power: Unit has ac power module which is settable
to: 100/120/220/240Vac (—13%, +6%), 48-63Hz, 10VA.
A 3-wire detachable fine cord is supplied.
Temperature Range:
Operating: 0 to 55°C
Storage: —40 to 75°C
Dimensions:
{See Figure 2-1}
Weight:
Net: 1.36kg. (3 tb.)
Shipping: 1.81kg. (4 Ib.)
1-3
SECTION fi
INSTALLATION
2-1 INITIAL INSPECTION 2-11 Outline Drawing
2-2 Before shipment, this instrument was inspected 2-12 Figure 2-1 illustrates the outline shape and
and found to be free of mechanical and electrical defects.
As soon as the instrument is received, proceed as instructed
in the following paragraphs.
2-3 Mechanical Check
2-4 If externa! damage to the shipping carton is evident,
ask the carrier's agent to be present when the instrument is
unpacked. Check the instrument for external damage such
as broken switches or connectors, and dents or scratches on
the panel surfaces. If the instrument is damaged, file a claim
with the carrier's agent and notify your local Hewlett-
Packard Sales and Service Office as soon as possible (see
list at rear of this manual for addresses).
2-5 Electrical Check
2-6 Check the electrical performance of the instrument
as soon as possible after receipt. Section V of this manual
contains procedures which will verify instrument operation
on the HP-1B. These procedures are also suitable for incom-
Ing quality control inspection. Refer to the inside front
cover of the manual for the Certification and Warranty
statements.
2-7 REPACKAGING FOR SHIPMENT
2-8 To insure safe shipment of the instrument, it is
recommended that the package designed for the instrument
be used. The original packaging material is reusable. [fit
is not available, contact your local Hewlett-Packard field
office to obtain the materials. This office will also furnish
the address of the nearest service office to which the instru-
ment can be shipped. Be sure to attach a tag to the instru-
ment specifying the owner, mode! number, fuil serial
number, and service required, or a brief description of the
trouble.
2-3 INSTALLATION DATA
2-10 The 595OT À is shipped ready for operation on the
HP-IB. Before connecting if to a controller and applying
power, read paragraph 2-26.
2-1
dimensions of Mode! 59501 À.
2-13 Rack Mounting
2-14 The 59501 A can be rack mounted in a standard
19-inch rack panel either by itself or alongside another
half (or quarter) System-li module of equal height and
depth. All rack mounting accessories for this unit are
listed in paragraph 1-11. Also, complete installation
instructions are included with each rack mounting kit.
2-15 Equipment Required
2-16 Ifan HP calculator is used to program the 59501 À,
the following equipment is required:
HP #4 #
Calculator 1/0 Card Package ROM
9820A 59405A Option 020” Math
HP-18 1/0
9821A 59405A Option 021” Math
НРАВ О
9825A 98034 A HP-18 1/0 General 1/0
- Extended 1/0
983CA 59405A Option 030* *
HP-1B 1/0
* Includes Peripheral Control 11 ROM
** Includes Extended 1/0 ROM
*** fan HP-2100 series computer is used as the
controller, the 593108 HP-{B Computer interface
card is required.
2-17 HP-1B Connector
2-19 The HP-IB connector on the rear of the 59501 À
interfaces directly to the HP-1B, Figure 2-2 illustrates the
pin configuration of the HP-1B connector which is a 24-pin,
TERMINAL STRIP
DETAIL
АЕ АЗ AS AX AR AE
aie er Taie
AE gu: JUDO
er
„5-32 SCHEW
0.44 CTR 70 <TR
WEL
094
123,9 т?
19.65
EM Smet
Menem Y
REAR
SIDE
Figure 2-1, 59501 A Outiine Drawing
type 57 micro-ribbon connector. One HP-18 cable is
supplied with each HP computer and calculator 1/0 card
package. Extra cables may be ordered separately.
HP-1B Cable Mode! No.
Cable Length
10631A 1m (3.3 ft.)
106318 2m (6.6 ft.)
10631C Am (13.2 ft.)
NOTE
The HP-1B connector supplied with this unit
contains metric fasteners (colored black). 1f
your HP-1B cable connector contains standard
mating screws {silver}, make a conversion using
the hardware and instructions included in Metric
Conversion Kit (5060-0138).
2-19 The HP-1B cables use the same piggyback con-
nector on both ends. Up to three connectors may be stacked
one upon another. As many as 1b instruments {including
the controller) may be connected to the same HP-1B,
2-20 System Connections
2-21 Figure 2-3 illustrates a controller (e. q., a 9825A
calculator) anda 59501A unit connected to the HP-iB. In
this case, the 98034 A interface card provides HP-1B capa-
bility for the 9825A calculator and is installed in any one
of the three slots in the rear of the calculator. The 98034A
card is equipped with the proper cable and connector to mate
with the HP-iB connector on the rear of the 59501A, Note
that specific connections between the 5950TA's output ter-
minals and the user's device (e.g. programmable power supply)
2-2
SIGNAL GROUND 24 12111 SHIELD
e TWISTED PAIR WITH E 23 HH ATN
P/OTWISTED PAIR WITH 10 [1 22 HO SRQ E
F/O TWISTED PAIR WITH 9 {|| 2} a IFC
P/O TWISTED PAIR WITH 8 20 NOAC
РУО TWISTED PAIR WITH Y 19 7 NRFD
PO TWISTED PAIR WiTH 6 НВ 6 DAV
REN 17 5 EDIT XX
DIOS 1 4 MIOS
DIO? |5 3 D103
DIGG Fa 2 DIO?
TOS us DICH
NOTE: TYPE 57 MICRO-
RIBBON CONNECTOR
(AMPHENOL OR
CINCH}
X SIGNAL GROUND
XX NOT PROCESSED BY 595014
HP-I8 LOGIC LEVELS: GROUND TRUE, TTL COMPATIBLE.
INPUT LEVELS (FROM HP-1B): t= TRUE = 0.8V
B = FALSE = 2,GV
QOUTPUT LEVELS (TO HP-TB}: 1 # TRUË + OVDC TO 0.4vD6
2 * FALSE 7 +2.5VDC TO +5VDC
Figure 2-2. HP-iB Connector
are not illustrated on Figure 2-3. These connections depend
upon the particular power supply being programmed and
the type of control! desired (output voltage or current).
The connections required to program various MP power
supplies are provided in Section li, paragraph 3-45 through
3-52.
2-22 Setting Addresses
2-23 The listen address for the 59501 À is selected by
address switches on the rear of the unit. The switches are
factory set to the suggested listen address of & when the
‘unit is shipped from the factory. As shown in Figure 2-4,
there are seven address switches. The last two switches,
6 and 7 (XX), are ignored {have no affect}. Switches 1, 4,
and 5 are set to "O” and switches 2 and 3 are set to "17 to
select a listen address of “E, Note that 81” is the suggested
sten address and is one of 31 listen address possibilities,
The address switeh settings for each of the 31 listen address
possibilities are listen in Table 2-1.
CONTROLLER
EG 9875A CALCULATOR)
| Г REAR
| | VIEW
| a) I80344
HP-IB
= 1/0 CARD
HP-18
— CABLE
(P/Q 98034A]
gem
HR-IB ADDRESS
HEN SWITCHES
HP-18 CABLE и“ OUTPUT
FIO631A, BOR CY X N , A TERMINALS
= af par
| kt
lo RL REAR
то 7 A VIEW
OTHER 59501A
BUS DEVICES UNIPOLAR/
BIPOLAR
* SWITCH
AC
POWER nam
MODULE Se ab TE REAR
VIEW
Tl "af Na bre!
USER'S DEVICE
LEG. HP PRO
GRAMMABLE
POWER SUPPLY)
PROGRAMMING
TERMINALS
X CONNECTIONS BETWEEN THE 5950IA'S QUTPUT TERMINALS AND
THE PROGRAMMING TERMINALS OF APPLICABLE HP PROGRAM-
MABLE POWER SUPPLIES ARE DESCRIBED IN SECTION 40.
Figure 2-3. System Connections
2-24 The HP-18 bus interface cards for the HP calcula-
tors are shipped from the factory with a preset talk address
of "LW" and a preset listen address of "5. Before program-
ming, write down the listen and/or talk address of all
instruments connected to the HP-IB.
2-25 Unipolar/Bipolar Mode Switch
2-26 The UNIPOLAR/BIPOLAR mode switch is à
push-in, push-out type switch located on the rear of the
unit beneath the output terminal strip. In the UNIPOLAR
mode {switch is in), the 59501 À provides an output range
of O to 0.999V or D to 9.89V. In the BIPOLAR mode
{switch is out), the 59501 À provides an output range of
—1V to +0.998V or —10V to +9.998V. The switch 15 set
to UNIPOLAR when the unit is shipped from the factory.
2-27 Input Power Requirements And Line
Voltage Conversion
2-28 The 59500A may be operated continuousiy from
a nominai 100V, 120V, 220V, or 240Y (483-63Hz) power
2-3
!
ADDRESS SWITCH
SE 6
x X
"
Ch
Mrremrameraurmger ar massssmmmmmnt
IGNORED
Figure 2-4. Listen Address Switches on Rear of 59501 À
fable 2-1. Listen Addresses and Switch Settings
Address Switches Listen
Address
5 4 3 2 1 Character
0 0 0 0 0 SP
0 О 0 0 1 |
0 0 0 1 0 e
0 O 0 i 1 #
0 0 1 0 0 $
0 0 1 0 1 %
0 0 1 1 0 &
G 0 1 1 1 '
0 1 о 0 0 (
0 1 0 0 1 )
0 1 0 1 0 *
0 1 0 1 1 +
0 1 1 0 0 ,
0 1 1 0 1 oe
0 1 1 1 0 .
О 1 1 1 1 /
1 0 0 0 0 0
1 0 0 0 i 1
1 0 0 1 0 2
1 0 0 1 1 3
1 O 1 0 0 4
1 0 1 0 1 5
1 0 1 1 0 6
1 0 1 1 1 7
1 1 0 0 0 8
1 1 O 0 1 9
1 1 O 1 О :
1 1 0 1 1 ;
1 1 1 0 0 <
1 1 1 0 1 =
1 1 1 i 0 >
source. A printed circuit board located within the ac
power module on the rear panel selects the power source.
Voltage choices are available on both sides of the PC
board. Before connecting the instrument ta the power
source, check that the PC board selection matches the
nominal line voltage of the source. The operating voltage
that is selected is the one printed on the lower-left side
of the PC board {see Figure 2-5}. As shipped from the
factory, the PC board in this Unit is positioned for 120Vac
operation. To select another input voltage proceed as
follows:
a. Remove power cable from instrument,
b. Move plastic door on power module aside.
c. Rotate FUSE PULL to the ieft and remove line
fuse F1.
d. Remove PC board from slot. Select operating
voltage by orienting PC board to position the
desired voltage on topleft side of PC board. Push
board firmiy into siot.
e. Rotate FUSE PULL back into normal position and
re-insert fuse Fl in holder using caution to select
the correct value for F1 {125mA for 100V or 120V
and 62.5mA sio-blo for 220V or 240V}.
f. Close plastic door and connect power cable.
2-29 When the instrument leaves the factory, a 125mAÀ
fuse is installed for 120V operation. An envelone contain-
ing a 62.5mA fuse for 220V/240V operation is attached to
the instrument. Make sure that the correct fuse value for
F1 is installed if the position of the PC board is changed.
2-30 Power Cable
- 2-31 This unit is factory equipped with a power cord
plug that is the most appropriate for the user's location.
The replaceable parts section of this manual lists all of the
power cords associated with this unit. If a different power
cord is desired, contact your nearest HP Sales Office.
2-32 To protect operating personnel, the National
Electrical Manufacturers Association (NEMA) recommends
that the instrument pane! and cabinet be grounded. This
instrument is equipped with a three conductor power cabie.
The third conductor is the ground conductor and when the
cable is plugged into an appropriate receptacle, the instru-
ment is grounded. The offset pin on the power cable three-
prong connector is the ground connection. In no event
shall this instrument be operated without an adequate
cabinet ground connection.
2-33 To preserve the protection feature when operating
the instrument from a two-contact outlet, use a three-prong
to two-prong adapter {if permitted by Focal regulations) and
connect the green lead on the adapter to ground.
VOLTAGE SELECT
P.C. BOARD
Figure 2-5, Line Voltage Conversion
SECTION HI
OPERATING INSTRUCTIONS
3-1 INTRODUCTION
3-2 This section contains operating instructions and
programming information for the 59501A Isolated D/A,
Power Supply programmer. Since the 58501 A can be used
as a power supply programmer or as D/A converter {low
level de signal source), operating instructions and program-
ming examples are provided to cover both applications.
Additional information regarding use of the 59501A 1s
provided in HP-1B/Power Suppiy Application Guide, HP
Part No, 5952-3990,
3-3 PRE-OPERATIONAL CONSIDERATIONS
3-4 Before connecting the 59501 À to an ac power
source, ensure that the proper operating voltage (100, 120,
220, or 240Vac} has been selected and the proper fuse is
installed {see paragraph 2-27). Also, check that the address
switches are set correctly, the UNIPOLAR/BIPOLAR mode
switch is set to the desired position, and all HP-1B system
cabling is installed (see paragraphs 2-20 through 2-26).
Connections between the 59501A and the user's device
te. q. HP Power Supply) are described in subsequent para-
graphs. |
3-5 CONTROLS AND INDICATORS
3-6 Front Panel
3-7 The 59501 A front panel contains a power on indi-
cator, a status indicator and four controls {screwdriver ad-
iustments) as shown in Figure 3-1.
3-8 The power on (ON) indicator (1) (Figure 3-1)
lights and the 59501 A'5 internal supply voltages (+15Y,
+15Y, Уса! are present when the line cord is plugged-in.
3-9 The LISTENING indicator (2) lights when the
59501 À is addressed to “listen” and remains iighted until
an “"unlisten” command or the interface clear signal is
received from the controller. When lighted, it indicates that
the 59501 A is enabled to process data words received on
the HP-IB. When it is not lighted, it indicates that the
59501 À is inhibited from processing data words.
3-10 The front panel screwdriver adjustments aliow fast
and easy calibration of D/A and power supply outputs.
Each adjustment is described below.
3-1
3-11 The ZERO ADJUST (3) allows the 59501A out-
put to be adjusted to OV + 250 millivo!ts when :t is program-
med to zero output, lt can also be used to correct Tor small
offsets in power supply response to programmed inputs when
the 59501 A is used as a power supply programmer,
3-12 The D/A FULL SCALE ADJUST (4) allows the
59501 А output to be adjusted to maximum (15%) when it
is programmed to maximum. For example, if the 59501A
is programmed to its maximum unipolar output in the high
range, the D/A FULL SCALE ADJUST is normally used to
set the output to 9.99V. However, it can also be used to
set the output between 9.49V and 10.49V (i. e. 9.99V +5%).
The D/A FULL SCALE ADJUST is used when the 59561 À
is employed as a D/A (see paragraphs 3-75 through 3-82).
When the 59501 À is used as a power supply programmer,
the POWER SUPPLY FULL SCALE ADJUST controls are
utilized to set the power supply 's output.
3-13 The POWER SUPPLY FULL SCALE ADJUST
controls {COARSE and FINE) enable the user to
set the maximum output desired from the power suppiy
when the 59501 À is programmed to its maximum value.
These adiustments can be used to calibrate the output of a
power supply to its maximum rated output or to any lower
value. For example, a 40Vdc power supply 's cutput could
be set to 20V when the 59501 A is programmed to ifs maxi-
mum value. In this case, ali 999 programming steps are
utilized in programming the supply from 0 to 20V with a
resolution of 20mV (approx.). Calibration of power supply
outputs is described in paragraph 3-53 through 3-59.
Figure 3-1. 59501A Front Panel
3-14 Rear Panel
3-15 The 58501 A rear panel contains the HP-IB connec-
tor, the ADDRESS switches, the UNIPOLAR/BIPOLAR
mode switch, the ac power module, and the output term-
inal strip as shown in Figure 3-2.
a. HP-IB connector — Interfaces directly to HP-IB
{paragraph 2-17}.
ADDRESS switches — Select 'Tisten” address of
59501 À (paragraph 2-22).
c. UNIPOLAR/BIPOLAR switch — Selects either
the unipolar of bipolar output mode {para-
graph 2-25).
. Ac Power Module — Contains fuse and ac input
voltage select PC hoard {paragraph 2-27).
b.
3-16 The 59501 À is interfaced with the user's device
via the output terminal strip. Output terminals AT and A2
allow access to the 59501 A's D/A output while terminals
A3 through A5 allow access to the power supply program-
ming network, Figure 3-3 illustrates the connections re-
quired to program the output voltage of a typical HP power
supply. In this case, a Jumper is connected between termin-
als A2 and A3, and terminals Al, Ad, and Ab are connected
to the voltage programming terminals of the power supply.
The method of programming and the connections required
to program the output voltage or current of various HP
supplies are described in paragraphs 3-37 through 3-74.
When the 59501 A is used as a low level dc signal source,
oniy terminals At and A2 are connected to the user's device.
Programming instructions for this application are given in
paragraphs 3-75 through 3-82.
3-17 PROGRAMMING FUNDAMENTALS
3-18 The unipolar or bipolar output of the 58501 A is
programmed by a data word comprised of four ASCH
characters (digits) received in the order shown below. The
first digit specifies range and the next three digits specify the
desired output within the selected range. The range digit
must be the number 1 to specify low range or the number 2
to specify high range. The magnitude digits can be an
number from 000 to 999. | |
D1 D2 D3 D4
Range Magnitude
Tor? 000-999
3-19 The 59501 A automatically provides an output
voltage as soon as the four digits are received. This output
is retained until the next four digits are received. The
58501 A is programmed by the magnitude digits in BCD to
produce the desired output voltage. In the unipolar mode,
000 equals 00.0% of full range, 500 equals 50.0% of ful!
3-2
ADDRESS
\ SWITCH
OUTPUT
TERMINALS
TE romanes
paa a eee
i
rT ee rn rT Fate AT mr Pati, oir) ата Ч
arr A LE TL rr err bE Tu Tu bal Cr Pb a ia
EI SO EE Eee ae eee Ce
+
. MODULE
Figure 3-2. 59501A Rear Panel
D/A POWER SUPPLY
OUT PUT PROGRAMMING NETWORK
{+} | (+) | °
A: AZ A3 A4 Аб
© e e © e |
©
|
TO
VOLTAGE PROGRAMMING
TERMINALS ON TYPICAL
HP POWER SUPPLY
Figure 3-3. Rear Terminal Strip, Typical Connections
range, and 998 equals 98.9% of full range. In the bipolar
mode, 000 equals the maximum negative voltage output,
500 equals OV output, and 999 equals the maximum positive
voltage output.
3-20 Calculating Data Word Values
3-21 The following paragraphs describe the data word
value calculations required to program the output of the
53501 A. Similar calculations are required when program-
ming power supply outputs using the 58501 A. The pro-
grammabie output range depends, of course, upon the power
supply model being programmed. The desired output range
of the particular power supply must be calibrated for pro-
gramming with the B8501A. Power supply calibration pro-
cedures and sample programs are described in paragraphs
3-53 through 3-74. |
3-22 Data word value calculations for the high (10V)
and iow {(1V} 59501 À output ranges are described below.
Calculations are provided for both the unipolar and bipolar
output modes. Each data word must be exactly four digits
long {one digit for range and three digits for magnitude]. If
more than four digits are sent to the 58501 A, the desired
output voltage will not appear at the output.
3-23 Unipolar Mode
3-24 Low Range. The desired 589501 A output voltage
values are from O to 0.999V programmabie in 999 steps.
The resolution in this range is equal to .899V/999, or TmV
per step. To calculate the correct data word value to pro-
duce the desired output within this range, proceed as
follows:
1. The resolution in the low range is ?mYV,
Let D = .001
2. The range digit is 1 for the low range, so add 1
to the left of the 3 magnitude digits,
Let BR = 1000
3. The magnitude portion {M} is calculated by
dividing the desired output voltage (Y) by the
least significant digit D. The magnitude portion
must be rounded off to exactly 3 digits,
M = ENT (V/D + 0.5} = 3 magnitude digits
4. Combine range and rounded off magnitude
portion to obtain the correct data word value (NJ,
N=R+M
Example, desired voltage = 0.5123V
D= 001
В = 1000
M= INT {0.5123/.001 + 0.5)
M = INT (512.8)
№ = 1000 + 512
N = 1512 = data word value
In this example, the desired output voltage is 0,5123 volts
but the actual output is 0.512V because the resolution is
imV (least significant digit equals .001):
V=MxD
\ = 512 x .001
\ = 0.512
3-25 High Range. The desired 59501A output voltage
values are from 0 to 9.99V. The calculations are the same
as for the low range, except resolution is TOmYV and the
high range is used. For the high range,
Let D = 01
and R = 2000
3-26 Bipolar Mode
3-27 Low Range. The desired 59501 À output voitage
values are from —1V to +0.998V programmable in 999
steps. For a —1 V output, the magnitude digits are ODO and
for a +0.998V output, the magnitude digits are 999. A OV
output is obtained when the magnitude digits are 500.
Resolution in this range is equal to 1.998/999, or 2mY. To
calculate the correct data word value to produce the desired
3-3
positive or negative output voltage within this range, pro-
ceed as follows:
1. The resolution in the —1V to 0.898V range is Эт У,
Let D = .002
2. The range digit is 1 for the low range, so add 1
to the left of the three magnitude digits,
Let R = 1000
3. The magnitude portion {M} is calculated by
adding 1 to the desired negative or positive out-
out voltage {V} and dividing this sum by the least
significant digit D. The magnitude portion must
be rounded off to exactly 3 digits.
M=INT(V+1)/0-+065)
4. Combine range and rounded off magnitude pot-
tion to obtain the correct data word value (N),
N=R+M
Example, desired voltage = —0.5123V
D = .002
6 = 1000
= INT {—5,123 + 1)/.002 + 0.5)
= [NT {+0.4877/.002 + 0.5}
= INT (243.85 + 0.5)
= INT (244.35)
м = 1000 + 244 = 1244
in this example, the desired output voltage is —0.5123V
but the actual output is —0.512V because the resolution ls
2mY (1.002):
V=(MxD)—1
\ = (244 х .002) —
\ = 0.488 — 1
Y = 0,512V
3-28 High Range. The desired output voltage values are
from —10Y to +9.98V., Calculations are similar to those
for the low range, except resolution is 20mV on the high
range, and 10 must be added to desired positive or negative
output voltage in order to calculate the correct magnitude
digits. For this range, the equation for the magnitude
portion {M} of the data word value is:
M = INT {{V + 10}/D + 0.5}
Example, desired voltage = —b,123V
D=.02
R = 2000
= INF ((-5.123 + 10)/D + 0.5)
M = INT {243.85 + 0.5)
M = INT (244.35) = 244
N = 2000 + 244 = 2244
In this example, the desired output voltage is —5.123V but
the actual output is —5.12V because the resolution is 20mV
(.002):
V= (Mx D) —10
V = (244 x .021 — 10
V = 4.88 — 10
V=—512V
3-29 Sending Data Words
3-30 Before a dats word 1s sent, a command must be
issued establishing the controller as the “talker” and the
59501 A as the “listener”. The following examples assume
that the controller (3830A or 9825A calculator) has been
assigned Its standard talk and listen addresses of "U and
“BY respectively, and the 59501 À has been assigned a listen
aderess of e”,
3-31 Example 1 illustrates a command statement (9830A
calculator) containing the proper talk and listen addresses,
The statement includes the constant data word value 771250"
which is sent to the 59501 À
Example 1. Sending a Constant Data Value
(9830A Command Statement)
Magnitude Digits
all 1
CMD "7U&'' , "1266"
59507 A Listen Address
Calculator Talk Address
Untisten Command
Range Digit
Data Word
3-32 Example ? iHustrates a command statement issued
by a 8825A calculator. Note that in addition to the calcu-
tator taille address “U” and the 59501 A listen address E”,
the address code of the HP-1B Interface Card (98034A)
must he included. It is assumed that the interface card has
been assigned its standard select code of 77. The 9825A
command statement also includes a constant data value of
1250 which is sent to the 59501 À.
Example 2. Sending a Constant Data Value
(9825A Command Statement)
59501 A Listen Address
Calculator Talk Address
Uniisten Command
98034 A Select Code 7
emd 7, TUK, 12567”
Range Digit
Magnitude Digits
Data Word
3-33 Example 3 ¡llustrates a write statement (9825A
calculator) which can also be used to address the 59501A
to listen and send a constant data value. The 59501 À listen
address of "87 corresponds to an address of “067 as defined
in the 9825A General 1/0 ROM manual (09825-90024)
Chapter 4. Note the format statement {line 0) used in
Example 3. The ""¢’’ specifies a character field, while the
"z'"is used to suppress carriage return/iine feed codes at the
3-4
end of the write statement. Suppression of the carriage
return/line feed codes is essential when programming the
5S9I501A. [tf they are not suppressed, they will be processed
as data characters by 59501 À resulting in an undesired
output.
Example 3. Sending a Constant Data Vaiue
(9825A Write Statement)
Suppresses CR/LF Codes
O: fmti.c,z
1: wrt 706.1, 12504”
95034 À Sel — 5S9B01A Address
Code
3-34 Command statements can only be used to send data
constants. Qutput (9830A) or write (9825A) statements can
variables.
3-35 Example À Hiustrates how an output statement
(O830A! is used to send variable data to the 59501 À. This
example includes a command statement {line 106) enabling
the 9830A to talk and the 59501 À to listen. However, the
variable data that will be sent to the 59501 A is included in
the output statement (line 120). In line 128, 13 specifies
the HP-18 interface. Variable N can be any number from
1009 to 1999 or from 2000 to 2999. If the variable were
egual to 1250, Example 4 would program the same output
as Example 1. Note that in Example 4, line 118 uses format
specification F1005.0 and line 120 ends in a semi-colon,
The F1805.0 format specification deletes leading spaces
from the output data item and specifies a field width of
four digits {space for + sign is suppressed} with no decimal
places. The use of the semi-colon (line 120) suppresses the
carriage return/ling feed codes at the end of the output
statement. If the leading spaces are not deleted and the
CR/LF codes are not suppressed, the 59501 À output will
GO to an undesired value.
Example 4. Sending a Variable Data
(9830A Output Statement)
188 CMD 787
110 FORMAT F10095.0
128 OUTPUT {13,110IN;
3-36 Example 5 illustrates how a write statement 198725A)
is used to send variable data to the 59501 А. If variable Nin
line 1 were equal to 1250, this example would program the
same output as the previous examples, Format specification
14.0 detetes leading spaces and the Z suppresses the CR/LF
codes for the same reasons as described above.
Example 5. Sending Variable Data
(9825A Write Statement)
G: ft 1, 14.9, 2
1: wrt 706.1, N
2.37 USING 59501A AS A POWER SUPPLY
PROGRAMMER
3-38 Power supply programming is accomplished using
the digitally controlled output voltage of the 595601A in
conjunction with the ZERO ADJUST and POWER SUPPLY
FULL SCALE ADJUST controls on the 59501 À front panel.
By making the appropriate connections between the
59501 A's output terminals and the voltage programming
terminals of a dc power supply, the output voltage {or cur-
rent) of the power supply can be programmed from zero fo
the full rated output. This method of programming is
called voltage programming with gain.
3-39 Voltage Programming With Gain
3-40 HP programmable power supplies have certain
features in common. These features include: an internal
reference (either a fixed regulated voltage or a fixed regu-
fated constant current source), voltage and current compara-
tors with their input terminals, and front panel controls
{voltage and current} with connections at the rear panel
terminals. A power supply can be controlied by making
the appropriate connections on the rear panel and applying
an external voltage (or in some cases current). For example,
by disconnecting the internal reference voltage from the
input circuits of the constant voltage comparator and
replacing it with an external voltage source, the output
voltage of the power supply is programmed by the value of
the external voltage source.
3-41 Figure 3-4 illustrates the method by which a power
supply ’s constant voltage output can be programmed using
an external voltage with a voltage gain dependent upon the
ratio of Rp to Rp. Note that this method is no different
from the circuit normally used for constant voltage control
of the output except that an external reference (the pro-
gramming voltage source) has been su bstituted for the
internal reference. On most supplies, external terminals
are available so that the connections shown in Figure 3-4
can be accomplished without any internal wiring changes.
tn all HP remotely programmable power supplies, the
summing point Sis made available, and the configuration
of Figure 3-4 can always be accomplished using the external
programming voltage source Ep and external precision wire-
wound resistors Rp and Rp. (Re should not exceed 10k.)
As indicated by the equation in Figure 3-4, Rp can be
selected so that the resulting voltage gain is either less or
greater than unity. It is possible to use the front panel
contro! on the supply as the voltage gain control Rp.
3-5
E
CHOOSE Fe > Ip NORMAL
SERIES
REGULATOR
aX о
X
UNREG. TY ¿ >
DC
ov [Ss EQUT
COMPARISON 1
AMPL. 7
Re
N р
> J 3
Ene KEDE
out *KyEe = Ep
Figure 3-4. Voltage Programming with Variable Voltage Gain
342 Constant Voltage. Figure 3-5 illustrates the con-
nections required for the 59501 À to program the constant
voltage (CV) output of a typical HP power supply. Note
the similarities between Figures 3-4 and 3-5, The 59501A
includes Rp (R76), Rp (COARSE and FINE POWER
SUPPLY FULL SCALE ADJUST), and Ep (59501 À output
between terminals AT and A2). The extra resistor (R77)
between terminals AS and AG is used only when program:
ming power supplies above 300 volts.
3-43 As shown in Figure 3-5, the supply ’s internal
reference voltage (+V ee) and VOLTAGE control are
disconnected (dotted fines) and are repiaced with the
59501 A‘s output voltage and POWER SUPPLY FULL
SCALE ADJUST. Note that in the unipolar mode, 59501A
output terminal AT is negative with respect to AZ. This
nolarity must be complied with when making connections.
supplies.
3-44 Constant Current. Figure 3-6 illustrates the
connections required for the 59501 À to program the out-
put current of a typical HP power supply. Programming
constant current consists of replacing the internal reference
with the output voltage from the 59501A and replacing
the internal CURRENT control with the POWER SUPPLY
FULL SCALE ADJUST controls on the 59501A. With
these connections, the voltage developed across POWER
SUPPLY FULL SCALE ADJUST (Rp) becomes the reference
against which the voltage drop across the output current
monitoring resistor (Ry) is compared. The relationship
between Ep and the supply ’s output current depends upon
the resistance ratio Rp/Rp and on the constant current pro-
gramming coefficient {Kp} of the particular supply. The
relationship between input voltage and output current is,
lout = (Ерх Rp) {Kpx Rp)
NOTE
_ TYPICAL HP POWER SUPPLY 595014
TN uu NT One 59501A can only program a supply s CY or
| | [ZERO ADJUSTÍ CC output. 1fitis desired to program both CV
| and CC on the HP-IB, two 59507As are required
+ | | with their address switches set to different addresses.
DI
ii | 3-47 The leads (AWG No. 24, minimum) connecting the
COMPARISON $ \ | 58501A to the power supply should be twisted to reduce
AMPL, € noise pickup. The longer the connecting leads, the more noise
| that can be introduced. Shielding will further improve noise
VOLTAGE] > | rejection. After completing the connections, install the pro-
-8 | tective covers over the terminal strips on the B9501A and
NS on the supply.
| | AB
= | Ne R77
| o
|
re ee ee re mem mi ml D. Len mms
Table 3-1. HP Power Supply/59501A Capability Guide
Figure 3-5. Typical Connections for CV Programming 5950 1A Programming
Capabilities
—LIPICAL IE. POWER SUPPLY EN Power Supply Model {CV {Figure | CC | Figure
| [ZERO ADJUST
Var | © GO02A Yes 3-7 Yes 3-12
compiison Lea | ha A 6101A, 02A Yes | 3-7 No ——
AMPL DA MID. 6104A, O5A Yes | 3-7 | Yes | 3-13
CURRENT] * | & 6106A Yes | 37 | No | —
< dl = 6111A-13A Yes | 3-7 No —
à | FRE RT 6114A, 15A Yes | 3-7 | Yes | 3-13
| UT, | SOWER 6116A Yes | 3-7 No —
d ARA SUPPLY
La pt | FÜL 6177C, 81C, 86C No | — | Yes | 3-14
+8 ADJUST 6200B-038 Yes 3-7 Yes 3-12
=. | вт 6204B-06B Yes | 3-7 | No | —
| | 62078, 09B Yes 3-7 Yes 3-12
TI E. 62208, 248, 268 Yes | 3-7 | Yes | 3-12
6227B, 288 Yes 3-7 Yes 3-12
. 6253A, 55A Yes 3-7 Yes 3-12
Figure 3-6. Typical COnnections for CC Programming 6256B-6274B Yes 3-7 Yes | 3-12
6281A, 84A, 89A, 94A, SSA Yes 3-7 Yes 3-12
3-45 59501A/HP Power Supply Connections 6282A, BEA, 86A, SOA,
ITA, I5A Yes 3-7 Yes 3-12
3-46 Table 3-1 lists the HP Power Supplies that can be 64278-64488 Yes 3-8 No ——
programmed on the HP-IB using the 59501 À. The table 5453A, BEE, 59A Yes 3-9 Yes 3-15
specifies if a supply is capable of CV and/or CC programming 6464C Yes 3-10 Yes 3-15
with the 59501 Á and also lists the applicable 59501 A/power 6466C-6483C Yes 3-8 Yes 3-15
supply connection diagram. The accuracy of a power supply/ 16823A, 24A Yes 3-11 No on
59501 A combination is the sum of the 59501 A's accuracy 6825A-6827A Yes 3-11 Yes 3-16,
plus the accuracy of the particular power supply. 58501A 3-17
power supply programming accuracy specifications are given
in Section |,
3-6
3-48 CV Programming Connections. Figures 3-7 through
3-11 lilustrate the connections required to program the CV
output of the applicable power supplies. The dotted line
connections represent jumpers which must be removed. All
other jumpers must be installed as Hiustrated. Note that
only those power supply terminals pertinent to CV program-
ming are shown, Complete terminal strip details are pro-
vided in the appropriate power supply Operating and Service
Manual. Most of the supplies are programmed using the
connections illustrated in Figure 3-7. The specific connec-
tions for each supply are tabulated on the diagram.
3-49 Special Protection Circuit. As indicated on Figure
3-7, some of the supplies contain a special protection circuit
which must be considered when programming with the
59601 A. The supplies affected are models 62568 through
62748, 6282A, 6G285A, G286A, 6200A, 6291 A, and 6296A.
Down programming the output voltage of these supplies may
activate the special protection circuit. When this occurs, the
power supply 's load cannot draw more than 10% (approx.)
of rated output current until the protection circuit resets,
IT it is desired to program the output voltage down to a
lower value without the need to draw full output current,
the reset time is not important. The reset time can take
from 5OOmsec to 6 seconds depending upon the particular
model, the load, and the starting and the ending voltage
values. For example, the actual output voltage of a 6264B
supply takes only 80msec for its output to go from 20 volts
down to .1% (20 millivolts), but it will be about 800 milii-
seconds before the circuit resets allowing the fuli output
current to be supplied to the icad. Additional information
concerning this protection circuit is provided in HP-1B/
Power Supply Guide, HP Part No, 5952-3990,
3-50 Special Option J30. An additional circuit, desig-
nated special Option J30, is required when CV programming
models 6427B through 64488 and 6466C through 64836,
The Option J30 circuit is a voltage-to-current converter and
is required because the 59501 A is essentially a constant
voltage source. The above supplies utilize current sources in
their programming networks. The programmable 6 — 10V
output of the 59501 À is connected to the Option J30 input
terminals (+ and —) on the rear of the supply as shown in
Figure 3-8. One characteristic of the J30 converter is that
if its input is open circuited, the cutput of the power supply
will rise to about 25% of its rating. With the 59501 À con-
nected, the open circuit condition is prevented because a
protection circuit In the 59501 À presents a low impedance
to the J30 input when ac power is removed from the 59501A
(see paragraph 4-13).
3-51 H the Option 130 power suppiy's front panel
VOLTAGE controls are left connected in the circuit, they
must be set to maximum resistance {fully CW}. If they are
rotated CCW, the output of the supply will be decreased
3-7
for all programming voltage received from the 59501 À. As
indicated on Figure 3-8, the user may disable the front
panel VOLTAGE controls and connect the 59501 AS
POWER SUPPLY FULL SCALE ADJUST in their place.
Refer to the applicable power supply’s Operating and
Service Manual for additional connection information,
NOTE: The dotted line connections represent jumpers
which must be removed. All other jumpers must be installed,
HE POWER SUPPLY (SEE TABLE) BSO e eco
3 | a
E
A +5
— +REF à) |
В
ev 3
COMPARISON | Sg, | RR SRT6
AMPLIFIER A
boy POWER
i SUPPLY
© | FULL
VOLTAGE SCALE
-s | ADJUST
—
7 R77
od
| |
a ue ae a ed rev —
VOLTAGE
MODEL NO. PROG. TEMS REMARKS
ABC
60024 AS | A2 | At |IF THE 600A I$ EQUIPPED WITH OPTION
001, MODE SWITCH ON 60024 MUSY BE
SET TO CC OR LOCAL.
EA, OZA, DGA A4 AS EAS REMOVE JUMPER BETWEEN AB AND -5
{POWER SUPPLY TERMINAL 4H 18 NOT
SHOWN ON THE CONNECTION DIAGRAM.
PRECISION POWER SUPPLIES: ACCURACY
15 SIGNIFICANTLY REDUCED WHEN
PROGRAMMING WITH 595OLA.
PRECISION POWER SUPPLIES: ACCURACY
1S SIGNIFICANTLY REDUCED WHEN
PROGRAMMING WITH BSSGIA
GIHA, IZA, IBA,ISA Ад | АВ [Ad [REMOVE JUMPER SETWEEN AS AND -5
{POWER SUPPLY TERMINAL ARIS NOT SHOWN ON
THE CONNECTION DIAGRAM) PRECISION
POWER SUPPLIES : ACCURACY IS SIGNIFI
CANTLY REDUCED WHEN PRGMING WITH S9501A
€P008, 046,058, O6B, 208 | A7 | AE | AB DUAL RANGE UNITS. FRONT PANEL RANGE
SWITCH MUST BE SET TO DESIRED OPERATING
VOLTAGE. A.SO ACAPACITOR 1S REQUIRED
BETWEEN TERMINALS AS AND -5 TO MAINTAN
PARO PERFORMANCE. SEFER YO APPLICABLE
CAS MANUAL PARTS LIST AND USE THE
SAME VALUE FOR THE CAPACITOR AS THAT
LISTED FOR CL
62018, OZR, O38, 07H, 208, | AT | AB | AS | A CAPACITOR IS REQUIRED BETWEEN TER-
248, 768,534, 554,614, BAA, MINALS ABAND ~S TO MAINTAIN PARD PER-
ESA, 94A, 99 FORMANCE, REFER TO APPLICABLE О В $
MANUAL PARTS LIST AND USE THE SAME
VALUE FOR THE CAPACITOR AS THAT LISTED
FOR Cl
62098 AT AG | AS FOR MODEL 62098 [320V CUTPUT) CONNECT
-5 TO TERMINAL A6 ÓN THE SO50A INSTEAD
OF TERMINAL AS. ALSO A CAPACITOR 1S RE-
QUIRED BETWEEN TERMINALS AG AND -S TO
MAINTAIN PARD PERFORMANCE, REFER TO
APPLICABLE © & § MANUAL PARTS LIST AND
USE THE SAME VALUE FOR THE CAPACITOR AS
THAT LiSTED FOR Ct.
A SuF CAPACITOR AND A 240) RESISTOR
{CONNECTED iN SERIES BETWEEN TERMINALS
A2 AND -S) ARE REQUIRED TO MAINTAIN
PARD PERFORMANCE. SEE 6227B/62288
GAS MANUAL FOR WIRING INSTRUCTIONS.
THESE SUPPLIES CONTAIN SPECIAL PRO-
648 658 666 675,666, TÉCTION CIRCUITS WHICH MUST BE CON-
- 69B, 718, 74E SIDERED WHEN PROGRAMMING WITH THE
62824, BEA, B6A.90A, lasinajaz 595018 (SEE PARAGRAPH 3-431
9 LA , 96A
BISA, OLA, HA IBA AZ! AL A5
62278, 288 Al | AZ | AS
C2SEB, S9B,GOE , 8/8 ,638, | AB | AZ: Al
Figure 3-7. CV Programming Connections for HP Power
Supplies with +S Common
NOTE: The dotted line connections represent jumpers which must be removed. All other jumpers must be installed.
HP POWER SUPPLY
NU (BA278- 6448664640 -64830) Ho Lor
| i}
[ERO ADJUST]
# OPTION | ; y
J30 PC BD | | (=) &
CURRENT oF {VOLTAGE | |
(PROGRAMS | TO-CUR- Po (4) (Ep)
OUTPUT RENT CON- ! | A
VOLTAGE VERTER
OF <
SUPPLY) I (Ry R76
4 FACTORY INSTALLED SPECIAL | ña
OPTION (J30) REQUIRED ON | a POWER
POWER SUPPLY (SEE PARA 3-50) | NOT ORBE S | SUPPLY
USED р! FULL
E" F + SCALE
xx MAY SE USED IN PLACE OF INE ; ADJUST
POWER SUPPLY'S VOLTAGE | Fe
CONTROL | SRTT
| AG ]
| «
|
Figure 3-8, CV Programming Connections for HP Power
Ssuppiy Models 6427B-6448B8 and 6466C-6483C
HP POWER SUPPLY 64640 À % 595014
НР РОМЕЯ ЗОРРЫЕ 6464 7 PO aa
-REF |
x !
JUMPER de | ere
(R7) 9 4% | | [2ERO ADJUST]
wl y
4
= AVR
|
: A 3 | +) AZ (Ep)
| LA
|
u Al
ev > © o 1
COMPARISON a2 | | |
AMPL |
| POWER |
[SUPPLY
FULL
SCALE
ADJUST |
pa mm mm mm mm me ml La en
X INTERNAL JUMPER (DESIGNATED R7 ON SCHEMATIC IN 6464C
08 5 MANUAL J MUST BE REMOVED.
— 3 VOLTAGE PROGRAMMING WITH UNITY GAIN -8464C OUTPUT
VOLTAGE VARIES iN A {TOt RATIO WITH 58501A PROGRAMMING
VOLTAGE.
Figure 3-10. CV Programming Connections for HP Power
Supply Model 6464C
3-8
HP POWER SUPPLY
___ (64534, 64568, OR 64590)
a
|
|
|
|
|
|
|
|
с
COMPARISON
AMPLIFIER
|
[VOLTAGE]
|
|
|
|
|
|
|
|
Figure 3-9, CV Programming Connections for HP Power
Supply Models 6453 A, 6456B, and G459A
BIPOLAR FOWER SUPPLY
AMPLIFIER
(SEE TABLE BELOW) 585014
| a DOT
| | | [ZERO ABJUST
| REAR | |
| TERM | |
| STRIP | |
© | |
| À
| >
B |
| |
Do |
I |
POWER
NOT | SUPPLY
USED FULL
SCALE
| ADJUST
|
e a a a Ka
AMPLIF {ER
MODEL NO, REMAR
INPUT TERMS ss
A B
6823A, 24A | CS IN SET FRONT PANEL MODE SWITCH
TO AMPLIFIER.
6825A,26A, A? Af SET FRONT PANEL MODE SWITCH
274 TO VAR GAIN AMP SET RANGE
SWITCH TO DESIRED OUTPUT
RANGE.
Figure 3-11. CV Programming Connections for Bipolar
Power Supply Amplifiers 6823A-6827A
3-52 CC Programming Connections. Figures 3-12
through 3-17 illustrate the connections required to program
The dotted
the CC output of the applicable power supplies.
connections represent jumpers which must be removed on
the supply’s rear terminal strip. All other jumpers must be
Note that only those power supply
connected as illustrated.
terminals pertinent to CC programming are shown. Complete
terminal strip details are provided in the appropriate power
Most of the supplies
are programmed utilizing the connection diagram of Figure
3-12. The specific connections for each supply are tabulated
supply Operating and Service manual.
on the diagram. In afl cases {Figures 3-12 through 3-17},
the 59501 A's programming output voltage is substituted for
the supply’s internal reference and the 595017 A’'s POWER
SUPPLY FULL SCALE ADJUST potentiometers replace
the supply’s front panel CURRENT control.
HP POWER SUPPLY (SEE TABLE) 5501 A
; BOO nn vn _
|
| | [ZERO ADJUST|
ES Ms
ce —REF | | T.
„у А A
COMPARISON | Lx | pee
AMPL vy | | >
A x | | +), (Ep) ] =
< | Eme) | A
7 e a AS
ET | (Re R76
1 0 ; AA
e ra -
| ee EF TE RES
| + || | [EOARSE] 27 POWER
D» | | Rel] FULL
(м? но tan $7 | SCALE
| СЕМЕРО | ADJUST
+8 pl Ei | ABJUS Ш
-s | as ? |
| о ВТ?
| ; 26
| Сен
|
ee " et Le moe te sa È- —__ LS Нее не —
MODEL NO CUR PROG TERMINALS
> ATBICTO
6002A # A7 A6 A5 | Ma
62008, O8, 028,038, | A4 | A5 | A3 | Al
078, 098, 208, 248, 268
62278, 288 A5 | A6 | A7 | n4
6253A, 55A A4 | A5 | A3 | Al
67256B,595,60B, 618,638 | A7 AG | A5 | Ad
648, 658, 668, 688,698,
718.748
62814, 84A, 89A, SIA,9SA! AG A5 | A3 | Al
62824, 854,864, 304,214, 1 AB | AT AE | Al
# IF THE €002A 1S EQUIPPED WITH OPTION OO,
THE MODE SWITCH ON THE E00ZA MUST BE SET
TO CY OR LOCAL.
Figure 3-12. CC Programming Connections for HP Power
Supply Models with +S Common
3-9
NOTE: The dotted line connections represent jumpers
which must be removed, All other jumpers must be
instalied.
POWER SUPPLY
(GIO4A, 6105, 614A OR ENSA)
5 y EA a _
|} mc
j 1 =
ce REF | | A !
COMPARISON | LÉ | | cl — |
AMPLIFIER | (a |
A = | | на
—< | [CURRENT], | |
Ce j :
г AS
> AT] A RTE
‘ ña |
И! ~ [POWER
AA | | SUPPLY
BAAN | | FULL
(Ra) | SCALE
+5 - {ADJUST
-5
R77
Figure 3-13. CC Programming Connections for HP Power
Supply Models 6104A, G1O5A, 6114A, and 6115A
HP CONSTANT CURRENT SOURCE
_{6ITTC, 6ISIC, OR GIBÉC} x# SOA LL on creme
hem mm e va m
x RESISTOR AIR35 (6I77C, GISIC) OR AIRZ2 (SIGEC) MUST BE REMOVED,
xx PROGRAMMING IS LIMITED TO RANGES SELECTED BY FRONT PANEL SWITCH,
Figure 3-14. CC Programming Connections for HP
Constant Current Sources 6177C, 6181C, 6186C
NOTE: The dotted line connections represent jumpers which must be removed. All other jumpers must be installed.
HP POWER SUPPLY
595014 __
| ZERO ADJUST
|
|
|
ce 1
COMPARISON |
AMP
LIFIER AS |
Ey f
[CURRENT] Y |
|
AS (Ry) 3 R76
24
POWER
AB SUPPLY
TS) FULL
o SCALE
A ADJUST
5 L
(Rp) $ КР?
AA ae]
BIPOLAR POWER SUPPLY
_AMPLIFIER (68204-GB27A} pue BSSONA aaa aa aan
+ |
> | | ZE
NEGATIVE per +8 | |
CURRENT A20 i
COMPARISON LS) | |
AMPLIFIER дан! | |
<L [CURRENT] > | |
|
AIS |
| | (Rg) S RTS
as | L ;
d | ;
2; POWER
| SUPPLY
| FULL
(Ry) | SCALE
-s | ADJUST
} :
| | SRT?
| | AS «
| | N
j L
Figure 3-15. CC Programming Connections for HP Power
Suppiy Models 6453-6483
BIPOLAR POWER SUPPLY
_AMPLIFIER (6825A- 682 TA) PBSOUA dd aa a a am
Fo]
: | Le
a (ZERO ADJUST]
POSITIVE +8 | | 9
+ REF |
CURRENT AIS | | {DA
COMPARISON — | |
AMPLIFIER д) | >
e rm |
< | [CURRENT] | | |
А | | i RT6
ss | Li
| | POWER
— || SE
Ry) | | SCALE
-S | ADJUST
i
в
R77
|
;
|
L
Figure 3-10. Positive CC Programming Connections for
BPS/A's 6825A-6827A
Figure 3-17. Negative CC Programming Connections for
BPS/A's 6825A-6827A
3-53 Power Supply CV Programming
3-54 The following paragraphs provide calibration
procedures and a sample program which are applicable to
alí supplies listed for CV programming in Table 3-1. Cali-
brating a supply for CV programming with the 59501 A
consists essentially of two adjustments:
1. Setting the supply's output to OY when the
53501 A is programmed to zero.
2. Setting the suppiy's output to a desired maxi-
mum value when the 59501A is programmed
to maximum,
3-55 The maximum desired power supply output can
be set to any value within the rating of the supply. For
example, if only 20V maximum is required for a model
62668 supply {40V rating}, the 62668 output range should
be calibrated for OV to 20V. Since the 59501 À is program-
mable in 999 steps {magnitude digits 000-989}, resolution
is 20/999 {about 20mV} in the high range and 2/999 {about
2mV) in the low range. 17 the supply is calibrated for the
full 40V rating, the resolution is 40mV (approx.} even
though the supply would never be programmed above 20V,
3-56 Note that for a 20V full scale output, it is usually
better to calibrate the full scale setting to 99.9% of 20V
or 19.98V. The reason for this is that the resolution will
be 19.98/999 or exactiy 20m V per step. However, if it is
imperative to calibrate the output to exactly 20V, the
resolution is 20/999, or 20.02002mV per step. Thus, the
user must determine the importance of having a round
number for resolution when writing programs.
3-57
Calibration. To calibrate a 59501 A/power supply
combination for CV operating, proceed as follows:
3-58
3-59
Test Setup.
a.
9.
Connect 59501 À to an HP-IB controller.
Connect 59501 À to power supply (CY pregram-
ming}, see Table 3-1.
Connect DVM between +5 and —S8 terminals
on the power supply.
. On 59501 À, set mode switch to UNIPOLAR
and turn POWER SUPPLY FULL SCALE
ADJUST (COARSE and FINE] fully CCW,
Also, if power supply has a front panel
CURRENT control, set if to mid-range {approx.}
Calibration Procedure,
a.
Apnly power to the controlier, the 59507 A, and
the power supply. Allow 30-minute warm-up.
. With the power supply's output terminals
(+ and —) open circuited, program the 59501A
to maximum high range 2999.
Adjust POWER SUPPLY FULL SCALE
ADJUST (COARSE and FINE} on 59501 À for
desired maximum output voltage {or 89.9% of
desired max., see paragraph 3-56} using the DVM,
. Program 59501 À to zero output "2006."
Ser ZERO ADJUST on 59501 À for 0.000
reading on DVM.
Program 59501A to 2998” and set POWER
SUPPLY FULL SCALE FINE ADJUST on
59501 A for desired maximum output voltage,
if necessary, use D/A FULL SCALE ADJUST
to obtain the required resolution.
NOTE
H the supply has a front panel CURRENT
control, perform the following steps.
9.
h.
Program 59501 À to zero output 20008”. Con-
nect a short across supply's output terminals.
Program 59501 À to 72999” and adjust the sup-
ply's front panel CURRENT control for the desi-
red maximum output current. |f a load change
causes this current limit to be exceeded, the
supply automatically crosses over to constant
current operation at this preset current limit
and the output voltage drops proportionally. If
desired, the front panel CURRENT control can
be disabled and replaced with a fixed resistor of
appropriate value {see applicable power supply
Operating and Service Manual}.
L Program “2000”. Remove short from suppiy's
output terminals and connect load.
3-60 Sample Program. A sample program for controliing
power supply CV outputs is given in example 6. The pro-
gram is written specifically for a 9825A calculator but could
be modified for use with other calculators te. g. HF 830A).
The program contains calibration and setup routines and
allows the operator to input specific voltage values on the
keyboard, The program also includes automatic changing
of ranges and error messages that indicate when the voltage
requested by the operator exceeds the maximum value
available or when a negative voltage is requested. Aline-by-
line explanation is given after the program. Programming
fundamentals are provided in paragraphs 3-17 through 3-36.
3-61 The sample program requires use of the General
1/0 and Extended !/0 ROM's. After keying in the program,
press RUN on the calculator. All operations required to
compiete the program are given on the calculator display.
After each operation is completed, press CONTINUE. The
operator enters the maximum desired output voltage value
(e. g. 20) when "Enter maximum output voltage” appears
on the display. The program automatically uses 88.8% of
this value (e. q. 19.98} to calibrate the supply {see paragraph
3-56}. After connecting the load, the operator enters the
desired output voltage {line 13) on the keyboard and
press CONTINUE, [fit is desired to recalibrate the power
supply (change the maximum desired output voltage) press
STOP and then press RUN.
MOTE
The program listings provided in the following
examples are taken from an HP 98668 printer.
These listings are provided only because 98665
printouts are easier to read than printouts
from the 9825A's internal strip printer. Also,
a check sum is provided at the end of each 98254
program listing. Make sure that the check sum at
the end of your keyed-in program matches the
check sum provided in the listing.
Example 6. 9825A Sample Program, Constant Voltage - Unipolar Mode
Le URDU HE Poser Some ly Weel base Dt pg Co
LPL HE at
o Pa ven BO
da EMO TER er PELL PRE cnt al nl tee Е
45 E60 10009041 E TE
Е me | To ot | pa TES т oN В COMMAND STATEMENT
(A AE (SEE PARA 3-32)
LE ;"
Ta de qe Cet PSE STL fe E nee
ew is ES pe, bem PEER ano wed mop
Ter “ая Et 4 " van EE ra mi
Eu aaa À 4 E | A; 14 13-04 "a
г 1 - + - Vo E
Tee PEDO ra LE a TEE
da x ra ne Ia aad pes
dn da ET E 3 Ey" "TT i wy "a a Of
NE Pe al TOR i. |. pe! N de Ji ro Rad id DE ti bi bi E Po E, Eo
и Ce EL
F | 4 ta уе „3 Я E: ra ju LE 11 и“, pr pur pr 11
ре med Y A:
a E a E a A
a ,
Tobi done per Py 4 . CTE pen a Ed er À ; or
ika ASE PLE ОН Ня Ea] ras fe
a Hurt] ie se EN LEO CE LE
] Hi E KC 14 ; =F
Elf cmd a AE "SAO
a "a г - 1 аб, F Freon Cher (ait fra
HOT à wf oe nn, Ho a on one en du Ea od Ho, LL te рые Tod
E Ef créent Lo Hi Er Ep [ey set, pi
Lud ow it boi Lei x EE rec ml E LE UE Ay
,
Les Lt VOR dep Ha remotive voltgass" iuait NREET ats 10
LEO LEO MORE Sehe Veltoue too hab" Hau SASG ate 15
LEX AP Мен, DEES DEE iR Ch LT Esk apa 18
OR EEE Deen OW Te Bp
kit feat Led Bier FOE, Tabane 10
LEO me [ A FORMAT AND WRITE STATEMENTS
a fq (SEE PARA 3-36)
TAREA CHECK SUM
Explanation:
1-2: Setup instructions.
User enters desired maximum output voltage on keyboard (e. y. 10, 20,50, 100, etc.).
4: Resolution is calculated and the maximum desired output is changed to 89.9% of voltage enteredin line 3
(see paragraph 3-56). |
510: Calibration routine using ZERO ADJUST and POWER SUPPLY FULL SCALE ADJUST {COARSE and FINE)
controls on 59501 A front panel,
11-12: Output is programmed to zero. Load is connected to power supply’s output terminals (see applicable
power supply Operating and Service manual).
13: User inputs desired voltage on keyboard.
14-15: If the voltage requested (line 13) is negative or too high, the appropriate error message appears on the display
for three seconds and then the program returns to line 13.
16-17: Proper range is selected and correct data word value (N) is calculated for the voltage requested.
18: Data word (N) representing the desired output voltage is sent to the 59501 A. Format f4.0 deletes leading
spaces and z suppresses the carriage return/line feed codes {see paragraph 3-36).
3-12
3-62 BPS/A CV Programming
3-63 The following paragraphs provide calibration
procedures and a sampie program for bipolar power suppiy/
amplifier (BPS/A) models 6824 A through 8827A. Calibra-
tion consists of setting the BPS/A's desired bipolar output
range when the 59501 A is programmed to its maximum
negative and positive limits. The desired bipolar range can
be set to any value within the rating of the particular
BPS/A. For example, the maximum output range of model
6826A is from --50V to +50Y. To calibrate this range, the
~-B0V output is calibrated with the 59501 A programmed
to “2000” and the +50V output is calibrated with the
59501 A programmed to 2999”, Since the 59501 À is pro-
grammabie in 989 steps, resolution is approximately 100mV
{100/999}. Note if it is desired to have a resolution equal
to exactly 100mV, the positive limit is set to +49.9V instead
of +50V. For this range (—-50V to +49.9Y), the resolution
is exactly 100mV (99.9V/999).
3-84 Calibration. To calibrate a 59501 A/BPS/A com-
bination for CV operation proceed as follows:
3-65 Test Setup.
a. Connect 59501 À to an HP-IS controller.
b. Connect 59501 À to BPS/A as shown in Figure
3-11.
. Connect DVM between +5 and ~S terminals
{models 6825A-6827A) or between 08 and CS
terminals {models 6823A, 6824A}. Connect
DVM common to —$ or OS terminal.
d. On 59501 A, set mode switch to BIPOLAR.
e. On BPI/A, set made switch to VAR GAIN
AMP {models 6825A-6827A) or AMPLIFIER
[models 6823A, 6824 A). Also, turn VOLTAGE
(Gain) controls on BPS/A fully CCW.
f. On BPS/A models 6825A through 6827 À only,
set RANGE switch to desired output range and
set CURRENT control to mid-range {approx.).
©
Calibration Procedure.
a, Apply power to the controller, the 59501 À, and
the BPS/A. Allow 30-minute warm-up.
b. With the BPS/A's output terminals open circulted,
program the 59501 À to maximum positive
output 2999”,
3-66
3-13
c, Adjust VOLTAGE control on BPS/A and D/A
FULL SCALE ADJUST on 59501A for the
desired maximum positive output {or 99.9% of
desired max., see paragraph 3-62} using DVM.
d. Program 59501 À to maximum negative output
20007,
e. Set ZERO ADJUST on 59501 A for the desired
maximum negative output from BPS/A using
DVM.
f. Program 59501 À to Maximum positive output
29997,
g. Set D/A FULL SCALE ADJUST for the desired
maximum positive output from BPS/A,
h. Repeat steps d through g until best possible
accuracy is achieved.
NOTE
The following steps apply only when
calibrating BPS/A models 6825A4-6827A.
i. Program 59501A to “2500”. Connect a short
across BPS/A's output terminals.
|. Program 59501 A to "2989" and adjust the
BPS/A's front panel CURRENT contro! for the
desired maximum output current. 1fa load
changes causes this current Hmit to be exceeded,
the supply automaticaliy crosses over to con-
stant current operation at this preset current
limit and the output voltage drops proportionally.
. Program "25067. Remove short from output
terminals and connect load.
ar
3-67 Sample Program. Example 7 is a sample program
using a 9825A calculator. The program contains calibration
and setup routines and allows the operator to input specific
positive or negative voltage values on the keyboard. The
program also includes automatic changing of ranges and an
error message if the voltage requested by the operator exceeds
the maximum bipolar value available. A line-by-line explan-
ation is given after the program. Programming fundamentals
are provided in paragraphs 3-17 through 3-36.
3-68 The sample program in example 7 requires use of
the General 1/0 and Extended 1/0 ROM’. After keying in
the program press RUN on the calculator. All operations
required to complete the program are given on the calculator
display. After each operation is completed, press CONTINUE.
Example 7. 9825A Sample Program, Constant Voltage - Bipolar Mode
hi E PPD PERO PA Tag | EIA Pon Welt br Prater 1
La toc 2
aio zp met ESSE Li PELAR ste
mio Turn VOL TO ARS iy Dub este
di e CEE maso pes out edt a bra ae Ma aks Dias
Boro «PEE ha e [pe
Ei cmd ar a e
idee CSetl NMOLT om TE RS БОРТ КЗоТ
med Fa ULI EA
NI ef "Ft IMP pam Le a RD BEA
EEE
Piro eze UML СЕВ НПО for Tae ast
Pr cmd a TUE SSA
12 due URendiuset Do Fw HLL Tor era Edo
Tabs eme Pa TEE SEE
ММВ Се ре te HORSE
Pee wet Ester dexijpresh Lal ae tE 83 uh
TR 4 Met nr MOP dep Meda asas tou tan unit SEE AL CE
Pon af WES CLF med A EEE ENEE сы
р EEE pen CRP oT
4
CT a ana : co, FU ep Nr por: ma LÀ or | AO PEO ee a oe
ska PAL Tada ke Belt SRN 1 ARA E
Explanation:
HE
2-3:
4-13:
14-15:
16:
17:
18-19:
20:
Sets fixed point format with three digits to the right of the decimal. This aliows for better.accuracy in the
adjustments specified in {ines 7 and 11.
Setup instructions,
Calibration routine using VOLTAGE (GAIN) control on BPS/A and the ZERO and D/A FULL SCALE ADJUST
controls on the 59607A. Note that in line 10 an average value is calculated so that the adjustment can be
completed in the minimum number of steps,
BPS/A output is programmed to zers. Load is connected to BPS/A output terminals.
User inputs desired output voltage (+ or —} on the keyboard.
[f 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.
Proper range is selected and correct data word value (N) is calculated to represent the voltage requested.
Data word {N}, representing the requested output voltage (+ or —), is sent to the 59501A. Format 14.0
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 3-36).
3-14
3-69 CC Programming
3-70 The following paragraphs provide calibration pro-
cedures which are applicable to all power supplies listed
for CC programming in Table 3-1. Calibrating the supply
for CC programming with the SO501A consists essentially
of two adiustments:
1. Setting the supply’s output current to zero
when the 59501 À 15 programmed to zero.
2. Setting the suppiy's output current to a
desired maximum value when the 59501 À is
programmed to maximum.
3-71 Calibration. To calibrate a 59507 A/power suppiy
combination for CC programming, proceed as follows:
3-72 Test Setup.
a. Connect 59501 À to an HP-IB controller.
b. Connect 59501 À to power supply (CC program-
ming), see Table 3-1.
с. Connect a resistive load in series with an external
current monitoring resistor across supply ’s out-
put terminals, Refer to Section V of applicable
Operating and Service manual for resistor values,
power ratings, and CC test setup diagram, etc.
Connect a DVM across the current monitoring
resistor.
d. On 59501 À, set mode switch to UNIPOLAR
and turn POWER SUPPLY FULL SCALE
ADJUST (COARSE and FINE} fully CCW.
e. On power supply, set front panel VOLTAGE
control fully CW.
3-73 Calibration Procedure.
a. Apply power to the controller, the 59501 А
and the power supply. Allow 30-minute warm-
up.
b. Program 59501 À to 2999” and set POWER
and FINE) for desired maximum output current.
{Voltage reading on DVM must be converted
to the equivalent output current).
c. Program 59507 À to "2006" and set ZERO
ADJUST on 59501 À for zero output current.
Note that for power supply models 6427-6483,
zero current may not be attainable. When cali-
brating the CC output of one of these supplies,
choose a convenient point, e. g. 10% or 20% of
maximum output and set ZERO ADJUST to
obtain this value, Data words 21898” and
2200” correspond to the 10% and 20% output
points, respectively.
d. Program 59501 À to "2999" and set POWER
SUPPLY FULL SCALE FINE ADJUST on
59501 A for desired maximum output current.
3-15
If necessary use D/A FULL SCALE ADJUST
to obtain the required resolution.
e. Turn off supply and open output terminals.
Turn on supply.
f. Adjust power supply ’s VOLTAGE contro! for
the desired maximum output voltage. If a load
change causes this voltage limit to be exceeded,
the supply automatically crosses over to con-
stant voltage operation at this voltage limit
point and the output current drops propor-
tionally. H desired, the front panel VOLTAGE
control can be disabled and replaced with a
fixed resistor of proper value {see applicable
power supply Operating and Service manual).
3-74 Sample Program. The sample program provided in
example 6 can easily be modified for CC programming by
substituting | (current) for V {voltage} and by monitoring
the output current using the test setup of paragraph 3-72.
3-75 USING 59501A AS A LOW LEVEL
DC SIGNAL SOURCE
3-76 When used as a low level de signal source, 59501A
output terminals Al and AZ are connected directly to the
user's device. In this application, power supply programming
network terminals A3 through AB are normally not used.
As described previously, two programmable output ranges
are available in the selected operating mode {UNIPOLAR or
BIPOLAR). The output ranges available at terminals AT
and A2 are as follows:
Range Unipolar Bipolar
High Cto 9,30 --10 to 9,98V
Low О to D.900V —1 to +0.998V
3-77 Unipolar Mode
3-78 Calibration. The ZERO ADJUST allows the output
to be adjusted to zero {£250 millivolts) when the 59501A
is programmed to zero (20008). The D/A FULL SCALE
ADJUST allows the output to be adiusted to 9.99V (+5%)
when the 59501 À is programmed to maximum (2999). The
59501 À is normally calibrated to provide a unipolar output
range from OV to 8.99V. The reason for this is that the
59501 À is programmable in 999 steps and using this range
results ina round number for resolution {voltage change per
step). For example, in the high range resolution is 9.99V/
999 or 10mV per step, If the outputs set to 10V, resolution
is 10/9299 or 10.01001mY per step. Calibration procedures
for operating in the unipolar mode are provided in paragraph
5-29,
3-79 Sample Program. A sample program (825A calcu-
lator} for controlling the unipolar output of the 59501A is
given in example 8. The program includes a calibration
routine and allows the operator to Input specific voitage
values on the keyboard. The program also provides auto-
matic range changing and error messages that indicate if the
voltage value requested exceeds 9.99V or if a negative voltage
is requested. A line-by-line explanation is given after the
program. Programming fundamentals are provided in
paragraphs 3-29 through 3-36.
3-80 The sample program requires use of the General 1/0
and Extended 1/0 ROM's. After keying in the program, press
RUN. All operations required to compiete the program are
Example 8. 9825A Sample Program,
given on the calculator display. After each operation is
completed, press CONTINUE.
NOTE
The program listings provided in the following
examples are taken from an HP 98668 printer.
These listings are provided only because 98665
printouts are easier to read than printouts from
the 9525A $ internal strip printer. Also, a check
sum Is provided at the end of each 9825A program
of your keyed-in program matches the check sum
provided in the listing.
59501A Unipolar Cutput
fod BEL ERR SERIE
dp OW
dott Ladd
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LEE
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Epa | НН Ё МГИ Ft a e E empre Papa pape b BOR tee | aa
y : 5 i map Jaan 4 = Tl
ab EE “200 E wet Apne LA 1 i. 4 le BATE {= EFE dol hp E- В Tato aer! Tad ala | i ar
{4 © "| 1 que BE dar fr be is put o ai" e ER TT PUR ET ii Les af ur
Junge Ree AUTE PO Eo JTF MEU Es fa
do AE а Loi LEE RES
axl i ppm 43 BE Ay Me oe, ae EL
Fa Ad Pa UEG "TEE
Liar ja? PEL Por oa r dera paa? EP En
de. a. e. ‘ . ‘ . -
“TH wd we ge Boge + | | " UT " 1 | "a I Ко {i af r
wad H Lado I Shit hs fans de 10 |, | Eo 1 Ve Enf PoE 4 #5 om Efe
El ну Ei 4 si BE att me gy pue HL
ci x WA rd a. Ea | | ео 8 TELE Ti
i wt BOF RG I A IE и Bree bet oa at
ка | Lu poe ar, am ng, вн и и“ pe E ;
ЕВ th - 4 1 ar “€ | FARO MBE I + г и! nf lo “wf HT 1 VE E
nd EP SE AT] Em À Ju: a eT Pe
pu, 11 E . Е A JH Le aa 1 ‚т
1 нор + i + a pe «À Mi, ue A = au, ge EOl : Hu Et, FUEL fo i Cod
2 cp но ; Pee pg E Er EE PRA a
ho 4 tor i a rid ] Ma Jen : i... En nat ab | dar La ï ч м a EE 8 Rd da
+ + + = KOMM al 1 +
qu + Wa ng ale eer "hy
1 [ta il a, 4 1 я | 41
1 i 4 "t "aa 4 “ul a La de dia
444 4 4 ls =
row d 4 ENE OC NP Er mp 1 Я
LF EF À Fo Е i
Lo ay El Coe Be as +
u 4 pu ‘H vof tE Las | , he
dw 10 UD A LA
a, ma оо e ama pw a
As, ALT 100046
| i : , je bu
die a EEE UT LEO ESTE E
4 “4 à x try
© "m È +
Ada HEC Le
aba EF i " id " ir
En of CA E q Wd em paren a | | вон, а
що ВО Be id SEE Li LEE BLL i
4 UE, it Fr E He dan, "AE kE „=
1 "ae 1 #13 Ti 1 WF a as a" и # of q Lb "3
, 11 i нее г = 11
ah 7 y ES LE | true Tr 2 ju
1 wd wet BY 1 ad GE Re RAE LE, [LF } dd wd
tr " + Sh Shir bb CHEE, H MOLL
Lr oor e A bl 4 и + чая к
a Pet F, ak xa Fl Ld Pre
a
El Ea
Explanation:
1:
2-5:
6:
7-17:
Setup instructions,
Calibration instructions using ZERO ADJUST and D/A FULL SCALE ADJUST on 59501 À.
User inputs desired output voltage (0 to 8.99) on keyboard.
Proper range is selected and correct data word value (N) is calculated to represent voltage requested. Hf the
voltage requested (line 6) is too high or negative, the appropriate error message appears on the display for
three seconds and, then the program returns to tine 6.
18:
Data word (N) is sent to the 59501A. Format 4.0 deletes leading spaces and z suppresses the carriage return/iine
feed characters. 1f ieading spaces are not deleted and the CR/LF characters are not suppressed, the output will
go to an undesired value (see paragraph 3-36}.
3-16
3-81 Bipolar Mode
3-82 Calibration. The ZERO ADJUST allows the nega-
tive limit to be set to —10V when the 59501 A is program»
med to zero (2000). The D/A FULL SCALE ADJUST
allows the positive limit to be set to +9.98V when the
59601 À 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. À sampie program for controi-
fing the bipolar output of the 59501 Á 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 +8.98V.
Example 9. 9825A Sample Program, 59501A Bipolar Output
dr ETERNA ARO Nba Dt mos PESE A
LE feat 5
DE se "бе ВОЛН ВОРОН!
Si mad Pa PUE NE ERDE
di due "Let DOR FE for ei Hei 4
Boreal Fa ULE TERR
Et ent Pater TU resina” a MOP ER
ПОКРЫЛ
ME map Mah 2e ko HIS To sE]
io meo Pa TRE TTM
бое "Васы! DoF FD бор TA MERLO REE
L1t ent Enter desire output vitous 5%
Ema We TE + Va GE due Co] teas Loc mica dec do CNE A 10
jar pro, HON and Монбар и, НН, PASA
dro SABE ya CARA, Be, Cr ЗЫ
LEO Pe la fed, Ari FRE, safe dl
Le E
"
oe, 4741 =. 444
да 1 Pay hf
r .
Ube ob LT owt Lan
Explanation:
i. Sets fixed point format with three digits to the right of the decimal. This allows Tor 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 À. 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:
the program returns to line 11.
13-14:
15:
If the voltage requested is too high, "Voltage too high’ appears on the display for three seconds, and then
Proper range is selected and correct data word value (N} is calculated.
Data word {N)} representing the desired positive or negative output voltage Is sent to the 59501 À. Format
f4,7 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
3-84 SAMPLE COMPUTER PROGRAM
3-85 A sample program for controlling the 59501 A in a HP Real Time Executive (RTE) 2100 series computer environ-
ment is given in example 10. The program is written in FORTRAN IY and duplicates the sample program given in example 8.
The sample program of example 10 assumes the following RTE/HP-IB configuration: 1. The HP-IB computer interface card
(HP-593108B) is assigned logical unit number 14 (16 octal). 2, The HP-IB RTE Driver DVR 37 was generated in the RTE
system (see DVR Programming and Operating Manual HP Part No. 58310-90063) to provide auto-addressing capability. Thus,
each time a data transfer is directed to the HP-1B, the driver automatically supplies the correct HP-IB Talk/Listen addresses
and then transfers the indicated data to the 59501A. 3. The user is interacting with the program via the system console,
logical unit number |.
3-86 It is important to note that the driver is called in the program using formatted WRITE statements in such a way as to
assure that only the appropriate four programming digits are output to the 59501 À via the HP-1B, The range digit IK, is output
using an Al specification while the three magnitude digits are output using the 13 specification after the desired voltage value
is intergerized to the appropriate value, Also, the HP-1B driver is called to implement a transparent binary data write function
(72118B) which is required in order to suppress carriage return/line feed characters from being output by the driver.
Exampie 10. 2100 Series Computer Sample Program, 58501A Unipolar Output
FINA,L
FunmGKAM TEZ:A
UTMENSTON I17ERU(2),IFULL (Ca)
VAYA YT7ERO:TFULL/2m20,2700,2899,2M99,
C UNTPOI AR VOLTALE OUTPUT 59501 A
— WRITE (1719
i PARMAT (" SET 592014 TO UNTROLART)
PAUSE
weyic(oiiao, 2)IZEKO
2 FORMAT (242)
WRITE (1:8)
2 FORMATE" SET ТЕКО ADJUST FUR myn)
PaisE
ARTIE (21185, 2) FULL
WRITE 174)
á FORMATE" SET D/A FS ADJ Pnk 9 9OVT)
CORRESPOND WITH Past
PROGRAM LINE NO'S OE .
IN EXAMPLE 8 71? MPITÉCIF6N Ue
6 FORMATE" ENTER VUESIREN YULTAGFÍA TO 9,99Yy3"3
REAL { la 7 y
7 ENRMAT (ES,
Ua, 201
1paéHs
IFeVal Tobby TU 12
LE (V.57.8,20/650 10 14
IF CVoGTo, 9 УВ) Оль 1
LVElFTX(V/De.5)
Те (У, СТ ео ОНО) ТН Лено
Вет ТЕ (21 {ов , ЭТК, ТУ
8 РОВМАТ (А), 43)
tn TU &
4 € WRTTE£{,13J
{+ ENRMAT(" NU NEGATIVE VolTabES")
en TU в
14 SPEiTE (1,158)
EL Еле МАТ" VvULTAGE ТОО HIGHn)
° Gn TU 5
LMR
EX NO FREURSH
3-18
4-1
4-2
mer or as a low leve! de signal source. Figure 4-1 is a block
diagram illustrating the major circuits within the 59501A.
SECTION IV
PRINCIPLES OF OPERATION
OVERALL DESCRIPTION
The 59501A provides a unipolar or bipoíar output
voltage in response to digital data received on the HP-IB.
As stated previously, the 59501A can be used (in conjunc-
tion with an HP-1B controller} as a power supply program-
power-on preset circuit are not shown on the block diagram.
The 59501 A's circuits are shown in their entirety on the
For simplification, the 58501 A’s bias voltage supplies and
main schematic (Figure 7-3 at the rear of the manual. The
functional circuit designations are the same on both the
block diagram and the schematic so that the two diagrams
can be correlated. As shown in Figure 4-1, the major
circuits of the 59501 À consist of digital processing circuits,
a digitai-to-analog converter, and analog amplifier circuits.
MOMIA A — ———’ veu mme a A PANA TETE
ANALOG AMPLIFIER
paral TT CC
ES > DIO | |
| ? DIoI-5 DIOL7 |
| 5] 77 N | LISTENING] |
+ X
| INPUT ADDRESS ADDRESS He: |
| Invearens| — | SWITCHES [| 5”]COMPARATORÍ ”] LISTEN |
LOGIC
T0/ FROM _ “EE. > |
HF-IB | a
AIN 1. ] CLOCK
| © 3 {GENERATOR |
АУ |, N |
7 (01-4 |
Pis ACCEPTOR jeocx т |
| HANDSHAKE Y |
NDAC PHOTO-
ISOL ATORS |
| jeLock DIOH4 |
8 |
DATA
STORAGE |
SEQUENCER |
| |
LOAD
DIGITAL PROCESSING CHARACTER „| DATA |
CIRCUITS STORAGE |
| 124 MAGNI- 27 RANGE |
LOAD TUDE
| WORD | DATA | A6
+i STORAGE 2
2
| | | PONER SUPRY А5
р FULL SCALE ADUÍ (o o
_ MAGNITUDE DATA (12-BITS BCD) > [COARSE
| 12
рн _———]] | re
RANGE
| | | (FINE 20 ma
RANGE | о
| SWITCH | A3
A FULL A
| | CN, output | 7 —@ [SCALE ADJ | 22
DIGITAL- AMP > (+)
nie] TO ANALOG м
CONVERTER A | 2 CT
[BIPOLAR] ó | | 9
¿ TURN ON/
ZERO TURN OFF | |
5 ADJUST CONTROL 1
|
|
|
CIRCUITS
Figure 4-1. 58501TA Block Diagram
4.3 Digital Processing Circuits
4-4 The 59501A responds to the ATN (attention)
and IFC (interface clear) control signals as well as the
data on lines (DI01-DI07). The 5950TA also receives the
DAV {data valid) handshake signal from the bus and sends
the NRFD (not ready for data) and NDAC (data not
accepted) handshake signals to the bus. A 3-wire hand-
shake sequence is used to control the transfer of each
character on the bus. This process allows devices with
different input/output speeds to be interconnected to the
HP-1B. The character transfer rate automatically adjusts
to the siowest device. The acceptor handshake circuit
implements the 3-wire handshake cycle that occurs with
each command or data character received on data lines
D101-DI07. The B9601A transfer rate is approximately
17usec per character. The 59501A is programmed by a
data word consisting of four consecutive characters (digits),
thus, a data word is transferred to the 59501A in approxi
mately 68usec.
4-5 Data lines DI01-DI0O7 accommodate the 7-bits
{(1-character} of the ASCII code. Each character is trans-
ferred onto the bus one at a time. The state of the ATN
line determines how the data lines are interpreted. The
ATN line is constantly monitored by the 59501A and all
other bus devices. When ATN is true, the bus devices
interpret the data as instructions {commands} from the
controller. The 59501AÄ recognizes two commands: is
listen address {suggested listen address is 8) and the
unlisten command "2".
4-6 When ATN is true and the 59501A's listen
address is placed on data lines DIOT-DIOZ, the S9501A
Is enabled to function as a “listener”. As shown in Figure
4-1, the data fines are applied to the address comparator
and to the listen logic, The address comparator decodes
the bOBOTA's listen address when the levels on fines DIOT-
DIOS match the address switch settings on the rear of the
59501A. In this case, the address switches are set to “8”
{one of 31 possible address codes} which distinguishes the
50501 A from the other devices connected to the bus.
Thus, when the 59501 À's fisten address is decoded and
AÀTN is true (command mode}, the listen logic is set. For
this condition, the LISTENING indicator is turned-on and
the clock generator is enabled allowing the 59501A to
process subsequent data words received on the bus. If the
ATN line is true and an unhisten command "2" is received,
the listen logic is reset, For this condition, the LISTENING
indicator is turned off and the clock generator is disabled
inhibiting the B8501A from processing data words. Note
that the 1FC signal also resets the listen logic. The 1FC
signal is used by the controller to terminate activity on
the HP-1B.
4-2
4-7 When the ATN line is false and the 59501 À is
“listening” {listen logic is set), the digital processing circuits
will store a data word comprised of four digits (characters)
transmitted consecutively. The first digit specifies the out
put range {low or high} and the next three digits specify
the magnitude of the output voltage within the selected
range. Each digit, represented by bits [D104 ({MSB}-DIO1
{LSB}, is transferred into data storage 1 {via input inverters
and photo-isolators) during the accompanying 3-wire hand-
shake cycle. The photo-iselators provide 600Vde isolation
between the HP-1B data lines and the 59501 À's output
voltage terminals {A1 and AZ).
4-8 A clock pulse, generated during each handshake
cycle, gates the data storage sequencer which in turn foads
each digit (1-range, 3-magnitude) into the proper storage
1 latch position. After the fourth digit is loaded into data
storage 1 all four digits {data word) are automatically
transferred into the data storage 2 latches. The three
magnitude digits are then sent to the digitai-to-anatog
converter (DAC) while the range digit is sent to the analog
amplifier circuits. The data storage 2 latches will retain this
data until a new data word is transferred.
4-9 Digital-to-Analog Converter (DAC)
4-10 The DAC converts the three magnitude digits
{12 bits, BCD) into an output current. The DAC output
range, 0-2mA (nominal}, corresponds to the BCD input
range of 000-099. The DAC output current is applied to
the current-to-voltage (1/V) converter in the analog amplifier
circuits. The UNIPOLAR/BIPOLAR switch on the rear of
the 59501 À chances the feedback path between the DAC
and the 1/V converter so that the 1/V converter provides an
output range from 0 to +2.5V {nominal} in the unipolar
mode and from —2.5V to +2.5V (nominal) in the bipolar
mode.
4-11 Analog Amplifier Circuits
4-12 The unipolar or bipolar output of the !/V converter
is applied to the output amplifier. The output amplifier
provides either a high range or a low range output voltage
between terminais A1 and A2. The range switch controls
the gain of the amplifier so that a high range or a low range
output is produced. The range switch is set to high range
when a 2" is programmed and to low range when a "1"
is programmed. Thus, the output amplifier provides one of
the following output ranges depending upon the range digit
programmed and the position of the UNIPOLAR/BIPOLAR
switch:
Low Range High Range
UNIPOLAR: 0 to +0.0999V O to 9.99V
BIPOLAR: —{ to +0,998V —10 to +9.98V
4-13 The output amplifier includes overvoltage protec-
tion and current limiting circuits to protect the 5950T A
and user equipment. In addition, à turn-on/turn-off control
circuit ciamps the output terminals at a low level when
power is turned-on or off. The purpose of this circuit is to
prevent transients at power turn-on and turn-off from
atffecting the output of the 59501 À and also prevent random
programming of a power supply prior to receipt of valid
programming data.
4-14 The front panel ZERO ADJUST allows a zero
(£250mV) output adjustment. The D/A FULL SCALE
ADJUST allows setting the maximum b8501A output
{£5%) in the high and low ranges.
4-1h When the 59501 À is used as a power supply pro-
grammer, the POWER SUPPLY FULL SCALE ADJUST
potentiometers {COARSE and FINE) allow the user to set
the maximum power supply output when the 59501 А &
programmed to its maximum output. Power supply
programming is accomplished by connecting the 59501 A’s
output terminals to the power supply ’s voltage program-
ming terminals {see Section IH),
4-16 DETAILED CIRCUIT DESCRIPTION
4-17 The following paragraphs describe, in more detail,
the operation of the 59501 A's major circuits. Note that
only those circuits not covered in sufficient detail in the
preceding overall description, will be described. Throughout
this discussion refer to the fold-out schematic diagram at the
rear of this manual.
4-18 Power-On Preset
4-19 When power is initially applied, the preset circuit
(Q3, U1, UB} generates a LO level pulse (PON) which resets
the listen flip-flop {acceptor handshake}, and the data storage
sequencer. Thus, the preset circuit ensures that the 59501 A
is not a “listener” and is properly initialized when power is
applied.
4-20 Address Comparator
4-21 The address comparator consists of b-bit comparator
U3 and the address switches on the rear of the supply. When
the levels on data lines D101-DI05 match the address switch
settings, U3 provides a Hi level ADDRESS output to the
listen togic. Note that the schematic illustrates the address
switches set to the suggested listen address of “&”,
4-22 Acceptor Handshake
4.23 The acceptor handshake circuit implements the
3-wire handshake cycle that occurs with each command or
4-3
data character received on the bus data lines D101-DI07.
Unrecognized command characters (e. g., talk address) will
be ignored but the handshake cycle between the controller
and the 59501A will occur anyway. The 3-wire handshake
lines are designated DAV {data valid}, NRFD {not ready
for data), and NDAC {data not accepted}, The acceptor
handshake circuit is enabled when the bus is in the command
mode (ATN is LO) or if the 59501 A is in the listen mode
{listen flip-flop set) and ATN is HI (data mode), For either
of the above conditions, the output of NAND gate US-3
goes Hi and NAND gate Ub-6 goes 1.O enabling the acceptor
handshake circuits, Figure 4-2 illustrates the 3-wire hand:
shake cycle timing sequence for each character received by
the 59501 À in the command and data modes,
To: Initially the NRFD signal (J1-7) is HI (59501A is
ready for data) and the NDAC signal (11-98) is LO (data not
accepted). Also DAYV (1-6) is HI (data on bus is not valid).
Tq: The source {assume controller} puts a character on
the bus and indicates that the character is valid by setting
DAV (11-6) LO.
To: After a delay of approximately 1usec NRFD goes
LO (59501A not ready for data). Also, accept data signals,
ACDS (U11-13) and ACDS (U11-4), are generated.
a. If the HP-IB is in the command mode (ATN LO),
the ACDS signal gates a recognized command character
(59501 A's listen address '& or unlisten command '?”)
which sets or resets the listen flip-flop {see paragraph 4-24}.
b. If the HP-1B is in the data more (ATN HI) and the
59501 À had previously been addressed to listen, the ACDS
signal gates the clock generator, producing a clock pulse
which loads the data character {range or magnitude) present
on bus lines {D101-DI04) into the appropriate storage
register (see paragraph 4-31).
Ta: After approximately 15usec, the trailing {positive}
edge of the ACDS (U11-4) signal produces a negative pulse
(1172-8) which sets the DAC F/F (U8-11 goes HI and US-6
goes LO). With U9-6 LO, NDAC (J1-8) goes H! indicating
that the 59501 À has accepted the data.
T4: The controller, sensing NDAC HI, sets DAV HI
indicating that the data on the bus is no longer valid.
Te: When DAV goes HI, the DAC F/F is reset (U9-6
goes HI and U8-11 goes LO) causing NDAC (J1-8) to go LO
(data not accepted). Also, with DAV HI, NRFD goes HI
indicating that the 59501 À is ready for the next character.
Tg: With NRFD HI, the controller sets DAV LO and
the next character is transferred {T2 through Tb}.
Г CHARACTER PRESENT a
DATA LINES DUI EA я
0101 - DIO? ПИЯ ДД
DAV НЕ =
(31-6) |
LO | a
Ë |
rs | i |
N&FD | |
(8-7) | | |
E T
: 1 i
— —best a— fe SEC | | |
ND AC |
{J1- 8) Pi
| | TR
i | N | |
ACDS | ; |
(ALU - 13) | poo
- |
| a 1BuseC—m! |
ее f ; ; ;
ACHS E | i E
(AJUI-4) | ) | | |
| Dos | boo
| | Ë f в y
AlUiz- 8 Г НЕ
(POS. EDGE | o] Е
DETECTOR} | pol | | |
I i [
AlUe-1i ; |
(КИР) )
|
ô
AlUs-6 | }
F/F) |
Po M
Î i | i i E
Pob do
То TT To Ts Ta Tg Te
Figure 4-2. Acceptor Handshake Signals, Timing Diagram
4-24 Listen Logic
4-25 The listen logic consists of logic gates which set
or reset the listen flip-flop. When the listen flip-flop is set,
the 59501 À is enabled to function as a “listener””. The
listen logic is enabled when the HP-1B is in the command
mode {ATN is LO). If ATN is LO and the 59501A's listen
address is decoded {ADDRESS is HI), the listen flip-flop is
set (U12-3 goes HI) when ACDS is received from the
acceptor handshake circuit. Note that only a portion of the
listen address is specified by the ADDRESS signal. In addi-
tion, HP-IB data input line DTO7 must be Hi and tine DIOS
must be LO to specify that a listen address is present on the
bus. When the listen flip-flop is set, driver 014 turns the
LISTENING indicator on. Also, with the listen flip-flop
set, the clock generator will be enabled when the bus is
placed in the data mode (ATN goes HI). The clock generator
produces clock pulses which gate the data seguencer storing
the data characters received on the bus (see paragraph 4-28),
4-25 HT the ATN fine goes LO again (command mode)
and an unlisten command (ASCI 77) is placed on the bus,
the listen flip-flop is reset {U12-3 goes LO) when ACDS is
4-4
received, turning off the LISTENING indicator, inhibiting
the ciock generator, and resetting the data sequencer. Note
that the interface clear (IFC) signal also resets the listen
flip-flop. The IFC signal is used by the controller to ter-
minate activity on the bus,
4-27 Clock Generator
4-28 The clock generator is enabled when the listen
flip-flop is set (U12-3 is HI) and the HP-1B is in the data
mode {ATN is Hl}. When enabled, the clock generator
produces a clock pulse (approximately 4usec wide) on the
leading edge of the ACDS signal received from the acceptor
handshake circuit. The clock pulse gates the data storage
the appropriate storage latch (see paragraph 4-32).
4-29 Isolators
4-30
and the sequencer reset signal are applied through inverter
drivers {U13, U14]} to photo-isolators {U15, U16, U17).
The inputs to the isolators are referenced to HP-18 signal
ground \/ while the outputs are referenced to power supply
ground NW. With these input and output connections,
up to 600Vde isolation is provided between the HP-IB data
input lines and the BOBO TA output terminals. Each dual
isolator 1C package contains a pair of light emitting diodes
and integrated photon detectors. The isolated DIO1-DIO4
data bits are routed to the appropriate data 1 storage latches
white the isolated clock and reset signals are sent to the data
storage sequencer,
4-31 Data Storage
4-32 The data storage circuits consist of data storage 1
latches, data storage 2 latches, and the data storage sequencer
circuit. The circuits store a data word which consists of
four characters. The characters are transferred from the bus
one at a time with the range character transferred first
followed by the three magnitude characters. Each character,
bits DIO4 (MSB) — DIOT (LSB), is transferred into data
storage 1 during the accompanying 3-wire handshake cycle,
After the fourth character is transferred into data storage 1,
all four characters {data word} are automatically loaded into
the data storage 2 latches, The timing sequence for the data
word transfer is provided in Figure 4-3,
4-33 The leading edge of each ACDS pulse generates a
clock pulse which gates the data storage sequencer. Initially,
the data shift register (U25) in the data storage sequencer
is reset and the data input (U25-7) is a Hi level. The timing
sequence that occurs during the transfer of a data word is
described below {Refer to Figure 4-3).
a. Cycle 1, The first clock pulse produces a negative
MAGNITUDE
$
RANGE MSD LSO
1 ов 2 0-9
DATA DIO4- DICH Tas эт rome ee NETO |
LINES CHAR NO. JICHAR NO 2 HCHAR NO. 3 [E CHAR NO 4
% oa
BATA WORD
aie, [LH HL
1
| |
|
CLOCK 1 |
TR? |
LANE 5) ;
| I
|
DATA
AURS-T)
|
|
Ó +— Aa as me m
EI
(ANUZ7-6) Lion CHAR NO f INTO DATA STORAGE 1
| E
| |
Qi | ГОТ
(AUZ5-5) x ;
i
el 1e LOAD CHAR NOZ INT
: DATA STORAGE !
ras en A wd ts ee ve
|
|
E
|
|
{
i
i
|
|
{
t
в
|
Ë
|
1
O
;
3
1
Le 1 |
(24-4) | [] |
| |
| | |
az | |
(AHI25~ 4) |
| | — pe LOAD CHAR NO 3 INT
La | | i DATA STORAGE |
NUZ4-3) | | [1
|
| |
E E
q3 l
(AIL25-3) i | | |
| a
| ¡LOAD CHAR NO 4 INTO ——e pe i
4 i ¡DATA STORAGE 1 | |
(AlJ24-11) | | E
T ; 1
LOAD DATA WORD (4 CHARACTERS) NO) kE |
04 mr | mo
TPE : { : 4
(AIU25-10) | | |
RESET | |
(AUZ5-6) | i
| |
(Tp SEC ее 174 SEC ен пы весне ET ASEC —
| 2
ФН ame gn — EBLSEC
| CYCLE HS CYCLE HS CYCLE HS CYCLE |
3 4
Figure 4-3. Data Word Transfer, Timing Diagram
pulse (L1} at U27-6. The trailing edge of L1 loads the range
character into data storage 1 (U26, J/K flip-flop). The
trailing edge of the first clock pulse transfers the data Input
(U25-7} into the shift register causing Q1 {U25-5} to go Mi,
With Q1 HI, the L2 AND gate (U24-6) is enabled. Aiso
with QT HI, the data input (U25-7) goes LO.
b. Cycie 2. The second clack pulse produces a positive
pulse L2at U24-4. While L2 is HI, the first magnitude
character is tranferred into data storage 1 {U18, four bit
latch}. The traiting edge of the second clock pulses causes
U25 to shift (01 goes LO, Q2 goes HI). With Q2 HI, the
data input (U25-7) remains LO and the L3 AND gate
{U24-1) is enabled.
4-5
c. Cycle 3. The third clock puise produces a positive
puise L3 at UZ24-3, While 13 is HE, the second magnitude
character is transferred into data storage 1 (UTS, four bit
latch}. The trailing edge of the third clock puise shifts U2b
{Q2 goes LO, Q3 goes Hl). With 03 HI, data input remains
LO and the L4 AND gate (1424-13) is enabled.
d. Cycle 4. The fourth clock pulse produces a positive
pulse L4 at U24-11, While LA is Hi, the third magnitude
character is transferred into storage leve! 1 (U20, four bit
tatch). The trailing edge of the fourth clock pulse shifts
U25 {Q3 goes LO, 04 goes Hi). When Q4 goes Hi, the
range character and the three magnitude characters are loaded
into the data storage 2 latches {U26 and U21-U253}. The 04
HI transition also causes U25-13 {P/O turn on/off circuit) to
go HI (this signal is significant only when power is initially
applied and the first data word is loaded, see paragraph 4-51).
The Q4 output is fed back to the shift register input (U26-6)
through OR gate U28 and delay circuit {C10, R22) resetting
the shift register (01-04 outputs go LO}. For this condition
the data input (U25-7) is HI initializing the shift register
for the next data word transfer.
4-34 The range latch output (U26-14) is LO if high
range was programmed and HI if low range was programmed.
The range output controls the range switch in the analog
amplifier circuits,
4-35 The magnitude outputs of 4-bit storage latches
J21-123 are applied to the digital-to-analog converter
(DAC) U29. The DAC is programmed in BCD. Each 4-bit
storage latch contains a number {3-9}. Thus, the three
latches can provide an output from 000-999. The laten
outputs are connected to the DAC input in the proper
order (i. e., U21 contains the most significant bits, etc). The
data storage 2 outputs are retained until a new data word 15
transferred from the bus.
4-36 Digital-to-Analog Converter (DAC) and I/V
Converter
4-37 The DAC (U29) converts the 12-bit BCD input
{3-magnitude digits) into an output current. The DAC
output range, 0-2mA {nominal}, corresponds to a BCD
input range of 008-999. The DAC output {U29-9} is applied
to the inverting input of operational amplifier U30 {current-
to-voltage converter). The UNIPOLAR/BIPOLAR switch
{S2) changes the feedback path between U30 and U29. In
the UNIPOLAR mode, the output of U30 is connected to
pins 10 {10V SPAN R) and 8 (BIPOLAR OFFSET IN)
of U?9 to obtain a U30 output range from 0 to +2.5V (nom-
inal). In the BIPOLAR mode, the output of USO is con-
nected to U79-10, however, U29-8 (BIPOLAR OFFSET IN)
is connected to the DAC's internal reference (U29-4} through
R24. For these connections, the current-to-voitage converter
(U3O) provides a bipolar output range from —2.5V to +2.5V
(nominal). Variable resistor R26 allows for a zero output
adjustment in the bipolar mode. The U30 output is applied
to the output amplifier through range resistors R45, R49,
and/or R52.
4-38 Output Amplifier
4-39 The output amplifier is comprised of a range
amplifier stage (operational amplifier U31}, voltage gain
stages (Q3, (4), and compiementary emitter follower stages
(010, 011). The gain of the amplifier is determined by
the range digit programmed.
4-40 When high range is programmed, range resistors
R45 and R49 are shunted through range switch FET O5
{see paragraph 4-44}. The high range gain of the output
amplifier is equal to — {RZ + RBG) + R52. In the high
range, the amplifier provides a 0 fo +9.99V output {unipolar
mode} or a —10V to +8.98V output {bipolar mode}.
4.41 When low range is programmed, the gain of the
amplifier is equal to — {R2 + R66} + {R456 + R49 + R52).
In the low range, the amplifier’s unipolar or bipolar output
is one tenth of the corresponding high range output.
Variable resistor R49 allows a tow range gain adjustment
while the front panel D/A FULL SCALE ADJUST control
(R2) allows setting the maximum rated 58501 A output
(+5%) in the high and low ranges,
4-42 Transistor stages ОЗ and Q4 provide a voltage gain
for the low level output {£1V max.) of operational amplifier
U31. Stages C10 (positive) and Q11 (negative) provide
the unipolar or bipolar output voltage between terminals
Al and A2. Output current up to 10mA is available and
is automatically limited to 17mA (nominal), When terminal
A1 is negative with respect ta , toad current will How
through the G11 stage. When terminal Al is positive with
respect to , load current witi flow through the Q10
stage.
4-43 Diodes CRY and CRT protect the output amplifier
if an external voltage exceeding 25V (nominal) is connected
between the AT and A2 terminals. If an excessive negative
voltage is applied, CRY will clamp the output to —25V
{nom.). If an excessive positive voltage is applied, CR11
will clamp the output to +25V (nom.}.
4-44 Range Switch
4-45 The range switch allows the output amplifier to
produce a high range or a low range output. The range
switch circuit (05, 06) receives the RANGE signal level
from range tatch U26-14. A LO signal level specifies high
range while a HI signal evel specifies low range.
4-6
4-46 Ifa LO leve! is received, transistor Q6 15 turned-
off causing FET (5 to conduct. The FET is used as a
switch which has a very low on resistance and a very high
off resistance. While conducting, Ob couples the output of
30 to the input of 31 via range resistor R52 (R45 and
R49 are bypassed).
4-47 If a Hl level is received, transistor Q6 is turned-on
causing Q5 to turn-otf, For this condition, the output of
U30 is coupled to the input of U31 through range resistors
R45, R49, and R52.
4-48 The spike suppressor circuit {in conjunction with
range amplifier U31} suppresses voltage spikes that occur
when the range switch is turned on or off. Voltage limiting
diodes CR8 and CR10 {Schottky 's) protect U31 from
excessive input voltages,
4-43 Turn-On/Turn-Off Control
4-50 The turn-on/turn-off contro! circuit is comprised
of shift register B (U?5), transistor stages (01, Q2) and
FETs Q7-08. The purpose of this circuit is to prevent
transients at power turn-on and turn-off from affecting the
output. To accomplish this, the output is clamped at a
tow level when power is turned on or off.
4-51 Before power is turned-on, range amplifier U31 js
shunted by FET Q8, the output of amplifier stage Q4 is
clamped at a low level by FET Q7, and FET Q9 clamps the
output of the 010 and O11 stages to ground, When power
is turned-on, the Vdd supply voltage {junction R27 and R28}
resets U25 {(U25-13 goes LO}, turning on Q1. With OT turned-
on, FET's 07, 08, and Q8 continue to conduct to maintain
the initial conditions (fow-level output). Note that when power
is turned-on, there is a delay before the —15V supply voltage
is available, consequently, Q2 is turned off at initial power
turn-on. After the delay, Q2 turns-on removing the reset
condition at U25. When the first data word is foaded into
data storage 2, shift register B output (U25-13) goes HI
(see paragraph 4-33d) turning off Q1. With Q1 off, FETs
Q7, G8, and Q9 cutoff allowing the output amplifier to
provide an output determined by the programmed dats
word.
4-52 At turn-off, the —15V supply voltage decays faster
than the +15V and Vdd supply voltages. When the —15V
supply decays sufficientiy, U25 is reset (U25-13 goes LO)
turning on Q1 which causes FET's Q7-09 to conduct,
Thus, the output is clamped at a tow level during the decay
of the +15V and Vdd supply voltages.
4-53 Bias Voitages
4-54 The bias voltages for the digital and anatog circuits
on the main printed circuit board are generated and distri-
buted as shown on sheet 1 of the schematic (Figure 7-3).
4-55 Ac power is applied through the power module and
power transformer T1 to two full-wave bridge rectifiers,
Integrated circuit U32 receives its raw (unregulated) de from
full-wave rectifier (CR14-16) and fitter {C27, C28). 1С U32
provides a regulated +5V output, with respect to deta
common V, for all TTL logic circuits on the data common
side of the photo-isolators.
4-7
4-56 Integrated circuit U33 receives Its raw (unregulated)
dc from fuil-wave rectifier (CR19-CR22) and filer (C31-C34).
Note that the —15 and +15V unregulated outputs (+25V and
--25V, nominal) are also applied to voltage protection diodes
CRO and CR11 {see paragraph 4-43). 1C U33 provides
regulated +15V outputs with respect to Y ‚far the DAC
and the analog amplifier circuits.
4-57 The Vdd bias supply {Q3} develops its output from
the +18BV supply. Vdd {+BV), referenced to \V , is distri-
buted to all CMOS logic circuits on the № side of the
photo-isolators. Note that power supply ground NV and
output ground Y are connected together,
SECTION V
MAINTENANCE
5-1 INTRODUCTION
5-2 This section contains checkout, troubleshooting,
repair and replacement, and adjustment procedures for the
58501A. The checkout procedures verify that the 59501 A
circuitry is operating properly by checking that it can be
programmed by an HP-18 controller and that it is properly
adjusted. The troubleshooting procedures are performed if
a matfunction occurs while performing the checkout pro-
cedures or during normal operations.
5-3 TEST EQUIPMENT REQUIRED
5-4 The controller {e. g., 9825A or 9830A calculator),
equipped with the appropriate bus interface card, provides
all of the signal inputs necessary for checking and trouble-
shooting the 59501A. The additional instruments required
for troubleshooting are listed in Table 5-1,
5-5 if available, Bus System Analyzer HP Mode! 59401 A
can be used in place of the calculator when checking or
troubleshooting the 59501 A. The 58401A provides talker,
¡istener, and controlier modes of operation. The operating
speed of the 59401 A varies from one character at a time in
the halt mode, to two characters per second in the slow
mode, and full HP-IB speed in the fast mode. Thus, the
59401A can be used to exercise the 59501 A circuitry aflow-
ing one character at a time to be transferred and checked.
5-6 CHECKOUT PROCEDURES
5-7 The procedures given in the flow chart of Figure
5-1 can be used to check operation of the 59501A when ¡
is initially received, If a malfunction is detected during
checkout, the procedures determine whether adjustment
of troubleshooting is required, The procedures in Figure
5-1 provide the following checks:
1. Output voltage is held near OV when power is applied.
2. Listen logic is enabled when the 59501 A's listen
address is received.
3. Listen logic is disabled when the interface clear (1FC)
signal 15 received.
4. Unipolar mode — zero output programming accuracy.
5. Unipolar mode — full scale programming accuracy.
6. Bipolar mode — full scale programming accuracy.
7. Listen logic is disabled when the "Unlisten” command
is received.
5-8 The checkout procedures are performed with the
59501 A connected to the HP-IB along with a controller,
The 59501 A's address switches are set to "8: anda DVM
is connected between the AT and A? output terminals,
Connect the DVM common lead to the Al output terminal.
5-9 TROUBLESHOOTING
5-10 The troubleshooting procedures {Figures 5-2 through
5-4} assume that the controler is operating properly and that
a malfunction exists in the 59501 А. Before attempting to
troubleshoot the 58601A, ensure that the fault was not caused
by a programming error. Also, it is recommended that the
reader review the circuit descriptions provided in Section !V.
À good understanding of circuit operation will aid in
troubieshooting. In order to troubleshoot the 59501 À, the
bottom cover must be removed.
Table 5-1. Test Equipment Required
Type Characteristics
Use Recommended Model
Digital Voltmeter | Accuracy: 0.004%
Precision dc voltage measurements
HP Model 3455A or 3490A
Oscilloscope Bandwidth: de to 50MHZz
Adjust zero output accuracy. Check
handshake cycle timing. CMOS logic
circuit troubleshooting.
HP Model 180C with 1803A
and 1821A plug-ins,
Logic Probe impedance: 2582, Trigger TTL logic circuit troubleshooting. HP 10525T
Thresh: 2.0V and 0.8V (nom)
Min. Pulse Width: 10nsec. |
TTL/CMOS TTL/CMOS togie circuit HP BABA
Logic Probe trou bieshooting
5-1
POWER CN A
LISTEN LOGE
CAFÉ AR MODE
AE Fi PROGRAM |
Mike ACCURACY :
CREA ANC LA
RANGE )
CONNECT TEST S
LP OF PARA $6
}
SET MOCE SWITCH
TO UNIÉEX AR AFFLÉ
PONER TT THE
BEA
CHECK QUTPLY wT
AGE Noi RE ANG
OH he
PROGRAM SECA
TS "LISTEN CHECK
"LETTERING LIA
* SEND INTERFACE
CLEAR (IFE) SIGNAL.
CHECK "Listening"
Fre ATOR
- , PERFORM DIGITAL
Cisne №. _ A CIRCUITS TROJBLE-
IND OFF?
> Ti
E
in
ad
PROGRAM ESSOL TA
LISTEN" AND SEND
BATA WERO * 2092"
CHECK Vo ON Ev
Ve < Im? > E
TES
+r
SEND DATA WORD
"1050" CHECK Va
ON DVM
¥
то "д"
del TRIMIBLE SAS TLNS
(PÉRECEM OMER ALL.
(Pie 8-2 3
+
# PRÉSS "STOF"KEY UN D8S0,21, SGA
CALLE ATORS OF "RESET"
ISTÑA CALC ATOR
SHOCTEING {FIG
A 53
SET "ZERO ADJUST"
EN SOSA FOR A
DYM READING LESS
THAN fray
SET "ZERG ABJUST
FOR A READING LESS
THAN Sim ON DURE
RECHECK HIGH RANCE
ae
Vo > ESCmVE> "ES ms
ZERO "2000" IF DE-
NEL
REY CH
то "в"
ФРАЙ ВОНИ
FULL SCALE PRD
GRAMMING ACCES
RACY THIGH AMD
ЕО ОБМАНЕ бя
EEC AF АА
Fld SCALE FR) т
LANE ACTA
Zr
UNE 5 PEN
DECODEF
SENG HATA WORE
“2995” CHECK Ve
ON DVM
$
SETA FULL SCAR]
AMBIET " FOR à
Yh READING OF
9 90V кам
Ч
Ld
SEND DATS WORD
Oh Dun
39087 CHECK Ye
FEREDRRM AS EST -
MENT FROCEDURES
(PARA E- 155 iF AC-
SUSTRENT FRO-
CEDURES РО мот
WORK PERFORM
CVERELE TROSELE-
SHOCTINC [FIG 5-7)
+
СНЕСЖ Му)
SET MOCE SWITCH
TO "BIPOLAR ” SEND
CATA WORLD "rene
o IC MO
YES
SET CERO ADJUST
FOR ATM README
OF KV idem
"E
Y
SEND DATA WORD
“29991 CHECK Vo
FROGRAM SS6GIA
VO CUNEISTEN |
CHECK LST ENING
INSICATOR
END CF TEST
SET DAR FULL SCALE
ALJUSTT FOR SVM
READING OF E SAY
41m
CIRCUITS TROUBLE
PERFORM BISITAR
SHOOTING (FIG
5-33
ip]
i 250mv 27
PERFORM ADJUST |
MENT PROCEDURES
¡PARA 5-19). 46 PRO-
CEDURES DO NOT
WORK, BIPOLAR /UNE-
POLAR SWITOH OF
DAC LAIR HS PROS
ABEY DEFECTIVE
Figure 5-1. Checkout Procedures, Flow Chart
CHECK COMPONENTE
ESTOCIATEN WITH 14--
CORRECT BIAS BF
PLY VOLTAGE (SEE
CHETEK FOR BLOWN
FUME 18 POWER
MCOUEF ALSC EM
SURE THEY THE AC
VOLTAGE SELECT
CARD 15 PROPERLY
INSERTED 3N THE
FOWES MOQULE
DIGITAL CHRCUITS
GEFECTIWE {BEE
Fig. ЗН.
CONNECT 595005 AND CON -
TROLLER TO HF- IE. SEY
SYRIA MODE SWITCH TO "UN:
POE AR” AND APPLY POWER TO
SSSOIR CHECÉ DIAS SURRY
VOLTAGES ON THE A
1 RE.
CONNECT METER 1.EADS CON AL
BECARE AS INCRCATES BELCW
METER | METER | NORMAL
COMMON POSFÍVE | READING
7 жа: ЗАО
4 +8 RnR TELS
15 FO 830 78VDC
Y vo 1650 2660
CHECK THAT THE
j EFFeGCPRIATE AC HN
PUT VOLTAGE 15 PRE-
SENT SE TWEEN THE
PRIMARY VWINDINSS
SF POWER XFA TE
SEE SCHEAM Spot
DEGITAL. CIRCMITO
DEFECTIVE (SEL
Fig 5.2)
CHECK RANGE SIG“
NAL AT AIUZE - 14
(WITH FESPECT TON)
EYES
RANGE SWITCH
АК, 06 DEFECTIVE
pra
CHEZ OUTPUT VOLT -
AGE (Ve) BETWEER
ALL) AND ASÍS;
TERMINALS. CON-
NECT MEYER COM
MON TO az
ча Е ОМУТ
YES
TUR OM CONTROL -
1ER PROGRAM
BABS EL TO STEN
ANC: SEND Magn,
SHÉCA 1157 FN:8G
INDICATOR AND MEA-
SURE VOLTAGE (Ve)
BETWEEN Al [-)
BME AZ 4H)
MC
7
№. <TR к
ок?
ES
aL TN ne
>
A
YES
DEI OR AIR
ВЕР ВОЛНЕ,
CHECK LEVEL АТ
ANITA 15 WITR
RESFECT TC LE
Е
"Ану 512
26.0 LEVEL
a
[a CE DEFECTIVE |
pl SUIT DEFECTIVE
TURM ONSCFF CR
{RIG dé OT 090
CHECK VOLTAGE
(Vias? BETWEEN
TES
PROGRAM SEC ТО
"LISTEN" SEND ote)
CHECK Yo BETWEEN
BETO REF)
YES
+
RANGE SWITCH AGS,
DE DEFECTIVE
CHECK RANGE SU
NAL ATANZEC 9
WITH RESPECT TU
berm” еее -
ALO PROBABLY
DEFECTIVE
AlJEC-6 AND UF
(COMMON)
DIGITAL CIRCUITS
DEFECT IVE SEE
FIG 8-54
CESE VOLTAGE BE-
TWEEN AUB FNS
YEN
AS PROBABLY
DEFECTIVE
Aval 07,06. OF |, NO
99 DEFECTIVE
AT © CUTPUTE: WITR
RESPECT TON: Cf
AN, U27, AND 75
ARE AS FOLLOWS
THAT LEVELS
DIGITAL CIRCUITS
DEFECTIVE {BEE
FA
CHECK VOLTAGE AT
AlU3I-6 WÈTH RE-
SPECT ТО Ч
(COMMON)
ALE OR De
DEFECTIVE
CHECK LEVEL. AT
ARIEL 15 WITH RE
SPELT OT y
JEN REY
1ZE-13
HE-E.£ EL +
CRETA MEE TAGE BE
TWEEN GATE iN-
PUT TO AT AND
TF (COMMON,
:
ENECR VOLTAGE AT|
COLLECTOR OF ADS
WITH RESPECT TO
ALE DEFECTIVE
АКН ОВ 98
DEFECTIVE
Y { COMMON)
ALCA - CRE CRI,
CRE IG CR Gil
DEFECTIVE
Figure 5-2. Overall Troublesheoting Procedures, Flow Chart
5-3
pe 7 A
A:G4 DEFECTIVE LES
LOGIC
APPLY POWER TO 550A AND
TURN ON CONTROLLER. MAKE
THE FOLLOWING CHEDIS MITA
PROBE CONNECT PROBE
COMMON TO SS COMMON?
1 NC
ARIZ, LIE OR iG]
DEFECTIVE
но
PROGRAM "UN-
LISTEN" HME
bornes не
"HIE TEN-
NG INE OFF?
YES
Y
+
WITH "UNLISTEN"
LOVELY SROGRAM-
MED MAKE THE
FOLLOWING
CHECKS
LAVE ISTEW |
DECS
COMMAND CONTIN:
CHECK AlUZ, Gap, NG
HG,
CLOCK
FEN
Ч
SMTA
ТАИТ
Te
SUL SES
AT ANBO-67
Ade OF UE Df
FECTIVE
AUX OR 310
DEFECTIVE
ee All, US =
AE TIR LEZ
DEFECTIVE
AILZ OR Ua NO
GEFECTIVÉ 125
REPEATED Y PRO-
GRAM THE 595014
TO "LISTEN ANS
SEND "1248"
CHECK TURN -ON
Pt PRESET CHOLET
AGE, LA, 05
CONNECT JUWF-
JER BETWEEN
COLLECTOR OF
od AND CF
OST OR ARs
DEFECTIVE
REMOVE JUMPER
6 WITH SSACIA
"LISTER" ADDRESS
SEPEATESLY PRO:
SARANBED MARE
THE FOLLOWING
CHECKS (WITH RE:
SPECT TOR) us-
ING LOGIC PROBE
CHECK ACTESTOR
pt HANDSHAKE. [FIG
5.41.
PL, SES
AT ASUS IZ
=
ADS DÉFECTIVE
PAR SES
AT ANIE-5
=
AI DEFECTIVE
OR AIUZ OR US
DEFECTIVE
ALLE [A
EOS —|
ÎCHECKS AS FOLLOWS
CONNECT SCOPE COMMON
CONNECT ТО "DRS DOM
MON) AND CONTINUE
USING SCC PE:
REPLACE ANJIS
PREF. ALE AILIÉ
REPLACE AJUFT |
| LISTEN
LOGIC
PATA 3
SERENO
ara В
STORAGE
РАН, SE МО ТАЮТ 28 OR
or UES DEFECT VE
AILST CR Urea
REFECTIVE
: т ME
aw ping к REPLACE AUPS
4
PROGRAM SEBCA
TOLISTEN AND
SEND "1999"
REPLACE AlUZ6
CHECK THAT
AY 0 OUTPUTS or]
AlUZ] 1228, ART
UE ARE AS FÉL-
LES
PINO LEVES
О 14H)
И ен
2 @iLa!
f CHECK THAT.
LÈVELS ATOUT
PUTS CF ANNE,
VIS AND WED ARE
AS FOLLOWE
FIN LEVEL
® EEO
Iz | {НЕ}
IVES 3 tal
PROGRAM S9ECIA 15 946)
TO LISTEN AND 1
SENO "7665" ;
но
YES
REFLACE DEFEC-
TIVE ARELUEZ GA
UES AS APPLICA E
REPLACE AUUZEG
CHECA THAT
LEVELS AT GUT-
FUTS OF ARJ2l,
HER, AMD U23
ARE AS FOLLOWS!
FIN LEVEL
10 S (10)
E I {Hh
2 ‘НИ!
| DILO: CHECK THAT
LEVELS AT Bout
PUTS OF AHNE,
1%, AMD LIED
ALL No PARE AS FOLLOWS:
CORRECT? PIN LEVEL
a | {HI}
2 MO
YES 3 eno
ER EAH
jres
REPLACE DEFES-
E ТРУЕ АНЕРЕ Нез
OR 1473 AS APPLIC-
END OF TI
| OF TEST | ABLE.
REPLACE DEFEC-
TEVE ARE, UF,
OR GRO AS AP-
PLICABLE
REPLACE DEFLE-
THE AILG8, LS
TOR CURD AS AF
PLICABLE.
5-4
Figure 5-3. Digital Circuits Troubleshooting, Flow Chart
WARNING
Exercise extreme caution when
working on energized circuits.
5-11 Overall Troubleshooting. The overall troubleshoot-
ing procedures given in Figure 5-2 isclate a malfunction to
the analog or digital sections of the 59501A. Analog circuit
mal functions are isolated to the component level, Addi-
tional troubleshooting flow charts (Figures 5-3 and 5-4)
are provided for digital circuit malfunctions.
5-12 The procedures given in Figure 5-2 first check the
bias supply voltages to ensure that these voltages are correct
before continuing with the troubleshooting. |f the supply
voltages are correct, the procedures continue to check if a
malfunction is present in the analog or digital portions of
the 59501 À. If a malfunction is not detected, review the
programming and operating instructions provided in
Section 111 to check if the fault was caused by a program-
ming or operating error.
NOTE
TTL logic levels (1 = true = 2V, Q = false <0.83Vj
are measured with respect to V . cmos logic
levels (1 = true = 3.5V, Y = false <= 1.5V) are
measured with respect to W/
5-13 Digital Circuits Troubleshooting. The digital
circuits troubleshooting procedures given in Figure 5-3
isolate a malfunction to components within the circuits
listed below or to the acceptor handshake circuit. A separ-
ate flow chart {Figure 5-4) is provided to troubleshoot
the acceptor handshake circut. Figure 5-3 checks the
digital circuits in the following sequence:
1. Power-on/preset
. Listen logic
. Unlisten decoder
. Clock generator
Data input circuits
. Isolators
. Data sequencer
. Data storage
5-14 Acceptor Handshake Troubleshooting. Figure 5-4
provides a static check of the acceptor handshake circuit.
However, it is possible to have a condition where a faulty
circuit would not be detected by performing these checks,
If a timing problem is suspected, the acceptor handshake
circuit must be checked dynamically. A dynamic test can
be made by continuously programming the 59501A to
listen” and observing the handshake signals on an oscitlo-
scope. The handshake cycle timing relationships are
shown in Figure 4-2.
5-5
5-15 REPAIR AND REPLACEMENT
5-16 All components and wiring are accessible when the
top and bottom covers are removed. The component side
of the A1 board, the chassis mounted components, and the
front pane! components are accessible when the bottom
cover is removed. (See Figure 7-1). The wiring side of
the AT board is accessible when the top cover is removed.
To remove the bottom cover, remove two rear screws, [ft
the cover, and pull it to the rear. The top cover is removed
in a similar manner.
MHECONNECT S9SCHA
FROM BUS
CONNECT TE
CAME - 11 TO 7
CHECK LOGIC LEVELS
[WITH RESPECT TD
КИТА FOUE OWS!
AIS OR AILE
DEFECTIVE
ALU OB UT
BEFECTIVE
ALE, UT OR UB
DEFECTIVE
AUD DEFECTIVE
WITH ATH (AIUI-H
GROUNDED, TOUCH AIUS OR AIU9
DAY (A1U1-91T0 DEFECTIVE
LO LEVEL Al, LUE DR RY
AT ALDO DEFECTIVE
RFD) 7
* WHEN DAY
1S GROUNDED | ES
AUS, 6 CR LEI
“TDEFECTEVE
15 TOUCHED 5
WHEN DAY
IS TOUCHED TOUCHED
АННЫ ЧО ОВ ЧЕ
DEFECTIVE
*
AChE
(АННЕ ES) pd AFUE DEFECTIVE
Е! INKS ON
WHEN DAMM
YE
END OF TEST
Figure 5-4. Acceptor Handshake Circuits Troubleshooting,
Flow Chart
5-17 REPLACEMENT PARTS
518 Section VI of this manual contains a fist of re-
piaceable parts. If the part to be replaced does not have
a standard manufacturers part number, I1 18 a special
part number anc must be obtained directiy from Hewlett-
Packard.
5-19 ADJUSTMENT AND CALIBRATION
5-20 The 539501 A is factory calibrated to operate
properly regardiess of the mode selected {unipolar or
bipolar). The calibration procedures, described in para-
graphs 5-21 through 5-26, may be reguired after perform-
ing the checkout procedures, troubleshooting, or repair
and replacement. Once the unit is calibrated, the front
panel controls may be adjusted as required for unipolar
or bipolar operation {paragraphs 5-27 through 5-30).
5-21 Calibration
5-22 The calibration procedures must be performed
In the order in which they are presented in the following
paragraphs.
5-23 Test Setup.
a. Remove the bottom cover to gain access to
the potentiometers on the At board {see Figure 7- }.
h. Connect oscilloscope to the Al and A? output
terminals on rear of 59501A. Connect scope common to the
A1 terminal. Set Time/Div. to 1msec/div and Volt/Div, to
TmV/em.
c. Check that the address switches on the rear
of the 59501 A are set to "E. £a
d. Connect the 59501 À to an HP-18 controller.
e. Appiy power to 5950TA and controller. Allow
a 30-minute warmup,
5-24 Unipolar Mode — Zero Programming Accuracy.
To adjust the zero programming accuracy in the high and iow
output ranges, proceed as follows:
a. Set mode switch on rear of 59501 A to
UNIPOLAR,
b, Program 59501 A to “Listen” and alternately
send data words ' 1900” (zero low range) and 2000” (zero
high range).
c. Adjust potentiometer ATR61 {unipolar zero
balance) for a straight line as indicated on the scope.
d. Remove scope and connect a DVM between
the A1 and AZ output terminals. Connect DVM common
to AT.
e. Send data word "2000" to the 59501 À.
f. Adjust front panel ZERO ADJUST for a
reading of OV 1m V on DVM,
Gh
5-25 Unipolar Mode — Full Scale Programming
Accuracy. To adjust the fuil scale programming accuracy
in the high and low ranges, proceed as follows:
a. Send data word 2999” (high range full scale)
to the 59601 À, |
b. Adjust D/A FULL SCALE ADJUST for a
reading of +9.99V + 1т\ оп DVM.
c. Send data word “1999” (low range full scale)
to the 59501 A,
d. Adiust potentiometer AT R49 {low range gain)
for a reading of +0.999V + 0.1mY on DVM.
e. Check the zero programming accuracy {para-
graph 5-24 steps a through e) and the fuli scale program-
ming accuracy (steps a through d above) and repeat both
procedures if required.
5-26 Bipolar Mode — Zero Programming Accuracy. Use
the same test setup as described Ir paragraph 5-23.
a. Perform steps 5-24a through 5-24e.
b, Set mode switch on rear of 59501 À to
BIPOLAR.
c. Program 59501 A to Listen” and alternately
send data words "15009 (OV, low range) and "2596
(OV, high range).
d. Adjust potentiometer ATR26 (bipolar zero
balance) for a straight line as indicated on the scope.
5-27 Front Panel Adjustments
5-28 After the unit is calibrated, the front panel
controls are adjusted for unipolar or bipolar operation.
Note that the following procedures adjust the cutput of
the 59501 À when it is to be used as a DAC. If the 59501 À
is to be used as a power supply programmer, follow the
calibration procedures provided in Section I! {paragraphs
3-53 through 3-66.
5-29 Unipolar Mode. Use the same test setup as
paragraph 5-23 except connect a DVM between the Al and
AZ output terminals. Connect the BVM common to the
AZ terminal.
a. Set mode switch to UNIPOLAR.
b. Program 59501 À to “Listen”. Send data word
2000" (high range zero} and adjust front panel ZERO
с. Send data word 2999” {high range full scale)
and adjust front panel D/A FULL SCALE ADJUST for a
reading of +8.89V + TmV on DVM.
5-30 Bipolar Mode. Use same test setup as above,
a. Set mode switch to BIPOLAR.
b. Send data word 2000” and adjust ZERO
ADJUST for a reading of —10V £1mV on DVM.
се. Send data word 2999” and adiust D/A FULL
SCALE ADJUST for a reading of +9.98V +1mV on DVM.
d. Repeat steps b and c.
Table 6-3. Code List of Manufacturers
CODE MANUFACTURER ADDRESS
16758 Delco Radio Div. of General Motors
Corp. Kokomo, ind.
17545 Atlantic Semiconductors, Inc.
Asbury Park, N.J.
17803 Fairchild Camera and Instrument Corp.
Mountain View, Calif.
17870 Daven Div. Thomas A. Edison industries
McGraw Edison Co. Orange, NJ.
18324 Signetics Corp. Sunnyvale, Calif.
18315 Bendix Corp. The Navigation and
Control Div. Teterboro, N.J.
19701 Electra/Midtand Corp. |
Mineral Wells, Texas
21520 Fansteel Metaliurgical Corp.
No. Chicago, Hi.
22229 Union Carbide Corp. Electronics Div.
Mountain View, Calif.
22753 UID Electronics Corp. Hollywood, Fa.
23936 Pamotor, Inc. Pampa, Texas
24446 General Electric Co. Schenectady, N.Y.
24455 General Electric Co.
Nela Park, Cleveland, Ohio
24655 General Radio Co. West Concord, Mass.
24681 LTV Electrosystems Inc. Memcor/Com-
ponents Operations Huntington, Ind.
26982 Dynacoo! Mfg. Co. Inc. Saugerties, N.Y.
27014 National Semiconductor Corp.
Santa Clara, Calif.
28480 Hewlett-Packard Co. Palo Aito, Calif.
28520 Heyman Mfg. Co. Kenilworth, N.J.
28875 IMC Magnetics Corp. Rochester, NH.
31514 SAE Advance Packaging, Inc.
Santa Ana, Calif,
31827 Budwig Mfg. Co. Ramona, Calif,
33173 GE. Co. Tube Dept. Owensboro, Ky.
35434 Lectrohm, inc. Chicago, IH.
37942 Р.В. МаПогу & Со. indianapolis, Ind.
42190 Muter Co. Chicago, Hi.
43334 New Departure-Hyatt Bearings Div.
General Motors Corp.
Sandusky, Ohio
44655 Ohmite Manufacturing Co. Skokie, HI.
46384 Penn Engr. and Mfg. Corp.
Doylestown, Pa.
47904 Polaroid Corp. Cambridge, Mass.
49956 Raytheon Co. Lexington, Mass.
55026 Simpson Electric Co. Div. of American
Gage and Machine Co. Chicago, Li.
56289 Sprague Electric Co.
North Adams, Mass.
58474 Superior Electric Co. Bristol, Conn,
58849 Syntron Div. of FMC Corp.
Homer City, Pa.
6-3
CODE MANUFACTURER ADDRESS
59730 Thomas and Betts Co. Philadelphia, Pa.
61637 Union Carbide Corp. New York, N.Y.
637453 Ward Leonard Electric Co,
Mt. Vernon, N.Y.
70563 Amperite Co. Ine. Union City, NJ.
70901 Beemer Engrg Co.
Fort Washington, Pa.
70903 Belden Corp. Chicago, 118.
71218 Bud Radio, Inc. Willoughby, Ohio
74279 Cambridge Thermionic Corp.
Cambridge, Mass.
74400 Bussmann Mfg. Div.of McGraw &
Edison Co. St. Louis, Mo.
71450 CTS Corp. Etkhart, Ind.
71468 1.T.T. Cannon Electric Inc.
Los Angeles, Calif,
71590 Giobe-Union Inc.
Milwaukee, Wis.
71700 General Cable Corp. Cornish
Wire Co. Div, Williamstown, Mass.
71707 Coto Coil Co. Inc. Providence, В.1.
71744 Chicago Miniature Lamp Works
Chicago, HI.
71785 Cinch Mfg. Co. and Howard
B. Jones Div. Chicago, ill.
71984 Dow Corning Corp. Midiand, Mich.
72136 Electro Motive Mfg. Co. Inc.
Wiitimantic, Conn.
72619 Dialight Corp. Brooklyn, N.Y.
72699 General Instrument Corp. Newark, N.J.
72765 Drake Mig. Со. Harwood Heights, IHi.
72962 Elastic Stop Nut Div. of
Amerace Esna Corp. Union, N.J.
72982 Erie Technological Products
Erie, Pa.
73096 Hart Mfg. Co. Hartford, Conn.
73138 Beckman Instruments
Fullerton, Calif.
73168 renwal, inc. Ashiand, Mass.
73293 Hughes Aircraft Co. Electron
Dynamics Div. Torrance, Calif.
73445 Amperex Electronic
Hicksville, N.Y.
73506 Bradley Semiconductor Corp.
New Haven, Conn.
73559 Carling Electric, inc. Hartford, Conn.
73734 Federal Screw Products, Inc.
Chicago, THE
74193 Heinemann Electric Co, Trenton, NJ.
74545 Hubbell Harvey inc. Bridgeport, Conn.
74868 Amphenol Corp. Amphenol RF Div.
Danbury, Conn.
74870 E.F. Johnson Co. Waseca, Minn,
Table 6-3. Code List of Manufacturers
CODE MANUFACTURER ADDRESS
75047 IRC Div. of TRW, Inc. Philadelphia, Pa.
75183 "Howard B. Jones Div. of Cinch
Mig. Corp. New York, NY,
75376 Kurz and Kasch, Ing. Dayton, Ohio
75382 Kika Electric Corp, Mr. Vernon, N.Y.
75915 Littlefuse, Inc. Des Plaines, HI.
76381 Minnesota Mining and Mtg. Co.
St. Paul, Minn.
76385 Minor Rubber Co. Inc. Bloomfield, N.J,
76457 James Millen Mfg. Co. Inc. Malden, Mass.
76493 JW. Miller Co. Compton, Cahf.
76530 Cinch City of Industry, Calif.
76854 Oak Mig. Co. Div. ot Oak Electro/
Netics Corp. Crystal Lake, HI.
77068 Bendix Corp, Electrodynamics Div.
No. Hollywood, Calif.
77122 Palnut Co. Mountainside, N.J.
77147 Patton-MacGuyer Co. Providence, #1.
77221 Phaostron Instrument and Electronic Co,
South Pasadena, Calif.
717252 Philadelphia Steel and Wire Corp.
Phitadelphia, Pa.
717342 American Machine and Foundry Co.
Princeton, Ind.
717630 TRW Electronic Components Div.
Camden, N.J.
77764 Resistance Products Co. — Harrisburg, Pa.
78189 Hiinots Tool Works inc. Elgin, HI.
78452 Everiook Chicago, Ine. Chicago, Il.
78488 Stack pole Carbon Co. St. Marys, Pa.
78526 Stanwyck Winding Div. San Fernando
Electric Mfg. Co. inc. Newburgh, N.Y.
78553 Tinnerman Products, inc. Cleveland, Ohio
78584 Stewart Stamping Corp, Yonkers, NY.
79136 Waldes Kohinoor, Inc. LiC., NY.
79307 Whitehead Metals Inc. New York, N.Y.
79727 Continental-Wirt Etectronics Corp.
Philadelphia, Pa.
79963 Zierick Mig. Co. Mi. Kisco, NY.
80031 Mepco Morristown, N.J.
80294 Bourns, inc. Riverside, Calif.
31042 Howard Industries Racine, Wisc.
81073 Grayhitl, Inc. La Grange, |.
81483 international Rectifier El Segundo, Calif.
81751 Columbus Electronics Yonkers, N.Y.
82099 Goodyear Sundries & Mechanical Co. Inc.
New York, N.Y.
02142 Airco Speer Electronic Components
| | Du Bois, Ра.
82219 Syivania Electric Products. inc,
| Emporium, Pa,
82389 Swircheraft, Inc. Chicago, III.
82647 Metals and Controls inc. Attleboro, Mass.
“Use Code 71785 assigned to Cinch Mfg. Co., Chicago, Hi.
CODE MANUFACTURER ADDRESS
32866 Research Products Corp. Madison, Wisc.
82877 Rotron Inc. Woodstock, N.Y.
82893 Vector Electronic Co. Glendale, Calif.
830568 Carr Fastener Co. Cambridge, Mass.
83186 Victory Engineering Springfield, N.I.
83798 Bendix Corp. Eatontown, N.J.
83330 Herman H. Smith, Inc. Brooklyn, N.Y.
83385 Central! Screw Co. Chicago, [it
83501 Gavitt Wire and Cable Brookfield, Mass.
83508 Grant Pulley and Hardware Co.
West Nyack, N.Y.
83594 Burroughs Corp. Plainfield, N.J.
83835 U.S. Radium Corp. Morristown, N.J.
838/77 Y ardeny Laboratories New York, N.Y.
84171 Arco Electronics, Ine. Great Neck, N.Y.
84411 TRW Capacitor Div, Ogallaía, Neb.
86684 RCA Corp. Harrison, N.J.
86838 Rummel! Fibre Co. Newark, N.J.
87034 Marco & Oak Industries Anaheim, Calif.
872106 Philco Corp. Lansdale, Pa.
87585 Stockwell Rubber Co. Philadelphia, Pa.
87929 Tower-Olschan Corp. Bridgeport, Conn.
88140 Cutler-Hammer inc. Lincoln, tit.
88245 Litton Precision Products Inc, USECO
Van Nuys, Calif.
90634 Gulton Industries Inc. Metuchen, N.J.
90763 United-Car Inc. Chicago, Il.
91345 Miiter Dial and Nameplate Co.
El Monte, Calif.
91418 Radio Materials Co. Chicago, lil.
91506 Augat, Inc. Attleboro, Mass.
91637 Dale Electronics, Inc. Columbus, Neb.
91662 Eico Corp. Willow Grove, Pa.
91929 Honeywell Inc. Freeport, lil,
92825 Whitso, Inc. Schiiler Pk., Hl.
93332 Sylvania Electric Prod. Woburn, Mass.
93410 Essex Wire Corp. Mansfield, Ghio
94144 Raytheon Co. Quincy, Mass.
94154 Wagner Electric Corp. Livingston, N.J.
94222 | Southco inc. Lester, Pa.
95263 Leecraft Mfg. Co. inc. LAC. NY.
95354 Methode Mfg. Co. Rolling Meadows, ili.
95712 Bendix Corp. Franklin, Ind.
95987 Weckesser Co. Inc. Chicago, ‘lt.
96791 Amphenol Corp. Janesviile, Wis
97464 Industrial Retaining Ring Co.
Irvington, N.J.
97702 IMC Magnetics Corp. Westbury, N.Y.
98291 Sealectro Corp. Mamaroneck, N.Y.
98410 ETC Inc. Cleveland, Ohio
98978 International Electronic Research Corp.
Burbank, Calif.
99934 Renbrandt, Inc. Boston, Mass.
Table 6-4. Replaceable Parts
REF. MER. HP
DESIG. DESCRIPTION TQ.i MFR. PART NO. CODE PART NO. [RS
At Main Board Assembly {See Note 1}
C1 fxd, cer. 1000pF, 1kV 1 C067B102E1027Z526 56289 0150-0050 1
C2-5 fxd, cer. OOTuF, 100V 11 28480 0150-0093 2
C6 fxd, mica. 500pF, 1%, 300V 1 DM15F501FO300WIC 72136 0140-0234 1
C7 fxd, cer. OOTuF, 100V 28480 0150-0093
C8 fxd, cer. 470pF, 10%, 1000WVdc 1 DD-471 71590 0150-2496 1
C8, 10 fxd, mica, 91pF, 1%, 300V 2 28480 0160-0335 1
C11-15 fxd, cer. O.OTuF, TOOV 28480 0150-0093
CT6, 17 fxd, cer. 0.14F, 50V 5 5C5081-CML 56289 0150-0121 1
C18 fxd, mica. 100pF, 10%, 500V 1 28480 0160-2006 1
C19 Not assigned
C20 fxd, mica. 30pF, 5%, bOOV 2 DM15E300J0500WVICR 72136 0140-0203 1
C21 xd, mica. 390pF, 5%, 300V 1 DM15F381J0300WVICR 72136 0140-0200 1
C22 fxd, cer, 0.OT5uF, +80,--20%, TkV 1 CO23B102M15375727 56289 0160-2477 1
C23 fxd, cer. 1uF, 20%, 26V 2 ESCZBUTOSX0025050 56289 0160-0127 1
C24 fxd, mica. 30pF, 5%, 500V DM15E300J0500WVICR 72136 0140-0203
C25 fxd, cer. 1uF, 20%, 25V 5CZ5U1TO0BX0025050 56289 0160-0127
C26 fxd, cer. 0.01uF, 100V 28480 0150-0003
C27 fxd, elect. 2000uF, 20V 1 28480 0180-2685 1
C28 fxd, cer. 0.1uF, bOV 5C5081-CML 56289 0150-0321
C29 fxd, elect. 22uF, 10%, 15V 1 150D226X901582 56289 0180-0228 1
C30 fxd, elect. 1uF, 10%, 35V 2 150D105X9035A2 56289 0180-0291 1
C31, 32 fxd, elect. T80uF, 50V 2 6720047 56289 0180-0634 1
C33, 34 fxd, cer. G.1yF, 5OV 5C5081-CMIL 56289 0150-0121
C35, 36 fxd, mica. 1600pF, 5%, 300WVdc 2 28480 0150-3068 1
C37, 38 fxd, elect. 1OuF, 10%, 20V 2 150D106X9020B2 56289 0180-0374 1
C38 fxd, elect. TuF, 10%, 3bV 150D105X9035A2 56289 0180-0291
C40 fxd, mica. 47pF, 5%, 500V 1 DM15E470J0500WVICR 72136 0149-0204 1
C41 fxd, mica. b6pF, 5%, 300V 1 DM15E560J0300WVICR 72136 0140-0191 1
CR1, 2 Diode, Si. 200mA, 7bV 7 1N4148 28480 1901-0050 | 6
CR3 Stabistor 15Y, 150mA 3 28480 1901-0460 | 3
CR4-7 Diode, Si, 200mA, 75V 1N4148 28480 1901-0050
CRS Diode, Schottky 28480 1901-0535 | 2
CR9 Diode, power rectifier 10 28480 1901-0327 110
CR10 Diode, Schottky 28480 1901-0535
CR Diode, power rectifier 28480 1901-0327
CR12, 13 Stabistor 15Y, 150mA 28480 1901-0460
CR14-17 Diode, power rectifier 28480 1901-0327
CR18 Diode, Si. 200mA, 75V 1N4148 28480 1901-0050
CR19-22 Diode, power rectifier 28480 1901-0327
J1 HP-{B connector, 24 pin microribbon 1 57-20240-2 71785 1251-3283 1
O SS PNP Si, 2 28480 1853-0099 2
O? SS NPN Si. 5 28480 1854-0071 5
ОЗ SS PNP Si. 28480 1853-0099
Q4 SS NPN Si. Ой 23417 03508 1854-0087 1
Q5 JFET 4 2N4392 04713 1855-0386 | 4
Q6 SS NPN Si. | 28480 1854-0071
Q7-9 ВРЕТ 2№4392 04713 1855-0386
Note 1: This assembly is designed for component level repair. Replacement assemblies cannot be supplied.
6-5
Table 6-4.
Replaceable Parts
REF. MFR. HP
DESIG. DESCRIPTION TO | MER. PART NO. CODE PART NO. | RS
Q10 SS NPN 1 2N2222A 07263 1854-04 77 1
Q11 SS PNP 1 2N2907A 04713 1853-0281 1
Q12-14 55 NPN Si. 28480 1854-0071
Ri fxd, film 383, 1%, 1/8W 2 C4-1/8-TO-383R-F 24546 0698-3446 1
R2, 3 fxd, film 5.11k, 1%, 1/9W 2 C4-1/8-TO-5111-F 24546 0757-0433 1 1
ВА fxd, film 42.2k, 1%, 1/8W 3 С4-1/8-ТО-4222-Е 24546 0698-3450 | 1
Rb fxd, film 383 1%, 1/8W C4-1/8-TO-383R-F 24546 0698-3446
RO fxd, film 47.5k, 1%, 1/8W 1 C4-1/8-T0-4752-F 24546 0757-0457 1
R7 xd, film 4.64k, 1%, 1/8W 1 C4-1/8-T0-4641-F 24546 0698-3155 1
RS, 9 fxd, film 301, 1%, 1/8W 2 C4-1/8-TO-301R-F 24546 0757-0410 § 1
RI0-15 fxd, fitm 162, 1%, 1/8W 6 C4-1/8-TO-162R-F 24546 0757-0405 | 1
R16-21 fxd, film 4.12k, 1%, 1/8W 8 C4-1/8-T0-4121-F 24546 0696-3493 1
R22 fxd, film 16.2k, 1%, 1/8W 1 C4-1/8-T0-1622-F 24546 0757-0447 1
R23 fxd, film 2.37k, 1%, 1/8W 1 C4-1/8-TO-2371-F 24546 0698-3150 1
R24, 25 fxd, film 10, 1%, 1/8W 4 Ca-1/8-TO-10RO-F 24546 0757-0346 1
R26 var., cermet, 20k, 10% 2 3006P-1-203 32997 2100-3307 1
R27 fxd, film 11.3k, 1%, 1/8W 1 C4-1/8-TO-1132-F 24546 0698-4121 1
R28 fxd, film 36.5k,1%, 1/8W 1 C4-1/8-TO-3652-F 24546 0757-0455 1
R29 fxd, film 19.6k, 1%, 1/8W 6 C4-1/8-TO-1962-F 24546 0698-3157 1
R30 fxd, fitm 121k, 1%, 1/8W 5 C4-1/8-TO-1213-F 24546 0757-0467 1
R31 fxd, film 19.6k, 1%, 1/8W C4-1/8-TO-1962-F 24546 0698-3157
R32 fxd, film 51.1k, 1%, 1/8W 1 C4-1/8-TO-5112-F 24546 0757-0458 | 1
R33 fxd, film 1k, 1%, 1/8W 5 C4-1/8-TO-1001-F 24546 0707-0280 | 1
R34 fxd, film 200k, 1%, 1/8W 1 C4-1/8-TO-2003-F 24546 0757-0472 1
R35 fxd, film 121k, 1%, 1/8W C4-1/8-TO-1213-F 24546 0757-0467
R30 fxd, film 1k, 1%, 1/8W C4-1/8-TO-1001-F 24546 0757-0280
R37 fxd, film 121k, 1%, 1/8W C4-1/8-TO-1213-F 24546 0757-0467
R38 fxd, film 1.5k, 1%, 1/8W 1 C4-1/8-TO-1501-F 24546 0757-0427 1
R39 fxd, film 13.3k, 1%, 1/8W 2 C4-1/8-TO-1332-F 24546 0757-0289 1
R40 fxd, film 121k, 1%, 1/8W C4-1/8-T0-1213-F 24546 0757-0467
R41 fxd, film 30,1k, 1%, 1/8W C4-1/8-TO-3012-F 24546 0757-0453 1
R42 fxd, film 4.12k, 1%, 1/8W C4-1/8-TO-4121-F 24546 0698-3493
R43 fxd, film 13.3k, 1%, 1/8W C4-1/8-TO-1332-F 24546 0757-0289
R44 fxd, film 42.2k, 1%, 1/8W C4-1/8-TO-4222-F 24546 0698-3450
R4b fxd, film 133k, 1%, 1/8W 1 C4-1/8-T0-1333-F 24546 0698-6351 1
R46 fxd, filmy 825 1%, 1/8W 1 C4-1/8-TO-825R-F 24546 0757-0421 1
R47 fxd, film 68.1k, 1%, 1/8W 1 C4-1/8-TO-6812-F 24546 0757-0401 1
R48 fxd, film 2.87k, 1%, 1/8W 1 C4-1/8-TO-2871-F 24546 0698-3151 1
R49 var,, cermet. bk, 10% 1 28480 | 2100-3308 1 1
R50 fxd, film 100k, 1%, 1/8W 1 C4-1/8-T0-1003-F 24546 0757-0465 | 1
R51 fxd, film 56.2k, 1%, 1/8W 1 C4-1/8-TO-5622-F 24546 0757-0459 1
H52 fxd, ww, 195k, 0.1% 1 28480 0811-0617 1
RES fxd, film 19.6k, 1%, 1/8W CA-1/8-T0-1962-F 24546 0698-3157
1454 Md, film 4.12k, 1%, 1/8W C4-1/8-TO-4121-F 24546 0698-3493
RDS fxd, fiim 121k, 1%, 1/8W C4-1/8-TO-1213-F 24546 0757-0467
R56 ixd, film 56k, 1%, 1/8W 1 C4-1/8-TO-5603-F 24546 0698-7666 | 1
Н5/ fxd, film 68.1, 1%, 1/8W 2 C4-1/8-TO-68R1-F 24546 0757-0397 1
R58, bY fxd, film 1k, 1%, 1/8W C4-1/8-T0-1001-F 24546 0757-0280
ROO fxd, film 19.6k, 1%, 1/8W C4-1/8-TO-1962-F 24546 0698-3157
R61 3006P-1-203 32997 2100-3307
var., cermet, 20k, 10%
6-6
Table 6-4.
Replaceable Parts
REF. MFR. HP
DESIG. DESCRIPTION TO.] MFR. PART NO. CODE PART NO. [RS
RE? fxd, film 68.1, 1%, 1/8W C4-1/8-TO-68R1-F 24546 0757-0397
R63 fxd, film 42.2k, 1%, 1/8W C4-1/8-T0-4222-F 24546 0698-3450
864 fxd, film 19.6k, 1%, 1/8W C4-1/8-TO-1962-F 24546 0698-3157
RES fxd, film 464k, 1%, 1/8W 1 C4-1/8-TO-4643-F 24546 0698-3260 1
R66, 67 fxd, film 475, 1%, 1/8W 2 1 C4.1/8-475R-F 24546 0757-0415 1
ROS fxd, film 19.6k, 1%, 1/8W C4-1/8-TO-1962-F 24546 0698-3157
R69 fxd, film 20k, 1%, 1/8W 1 C4-1/8-TO-2002-F 24546 0757-0449 1
R70 fxd, fitm 1k, 1%, 1/8W C4-1/8-TO-1001-F 24546 0757-0280
R71, 72 fxd, fiim 10, 1%, 1/8W C4-1/38-TO-10R0-F 24546 0757-0346
R73 fxd, film 9.31k, 1%, 1/8W 1. | C4-1/8-TO-9311-F 24546 0698-0064 1
R74 fxd, film 5.62k, 1%, 1/8W 1 C4-1/8-TO-5621-F 24546 0757-0200 1
R75 fxd, film 21.5k, 1%, 1/8W 1 C4-1/8-TO-2152-F 24546 0757-0199 1
R76 fxd, ww 3.32k, 1%, 1W 1 R51 A-1-3321-F 91637 0811-1999 1
R77 fxd, ww 100k, 5%, 10W 1 28480 0811-3029 1
R78 fxd, film 4.75k, 1%, 1/8W 1 C4-1/8-TO-4751-F 24546 0757-0437
R79 fxd, film 15k, 1%, 1/8W 1 C4-1/8-TO-1502-F 24546 0757-0446
R80 fxd, film 442k, 1%, 1/8W 1 C4-1/8-TO-4473-F 0698-3460 | 1
Si Address switch 1 28480 3101-1973 1
1
TB1 Barrier block 6-terminal 1 28480 0360-1833 1
Ut, 2 Hex Schmitt Trig. Inverter TC 2 SN74L514N 01295 1820-1416 2
U3 Digital comparator, iC 1 93L.240C 07263 1820-0904 1
НА 8-input Positive - NAND Gate, IC 1 SN74 LS3ON 01295 1820-1207 1
Ub Quad-2 Input Positive NAND Buffer, 1 SN7438N 01295 1820-0621 1
Open Coll. iC
UE Triple 3-Input Positive NOR Gate 1 SN74L527N 01295 1820-1206 1
U7 Hex Inverter, 1C 3 SN74ESO4N 01295 1820-1199 3
UB Quad 2-Input Positive NAND Gate, 10 13 SN74ESOON 01295 1820-1197 3
US Dual 4-Input NAND Gate, 16 1 SN74LSON 01295 1820-1204 1
UTO Quad 2-Input Positive - NAND Gate, IC SN74LS00N 01295 1820-1197
U1 Dual Monostable Multivibrator with 1 SN74LS221N 01295 1820-1437 1
Schmitt Trig. Inputs IC
UT? Quad 2-Input Positive - NAND Gate, IC SN74LS00N 01295 1820-1197
UT3, 14 Hex Inverter, IC SN74 LSO4N 01295 1820-1199
UTB-17 Duai High Speed Opticaily Coupled 3 28480 1990-0608 3
Isolators
UT8-23 COS/MOS Quad Clocked 7D” Latch, 1C 1 6 СО4042 АХ 02735 1820-1540 | 6
U24 COS/MOS Quad 2-Input AND Gate, IC 11 CD40818BY 02735 1820-1486 1
U25 COS/MOS Dual 4-Stage Static Shift 1 CD4015AE 02735 1820-0976 1
Reg., iC
U26 COS/MOS Dual J-K F/F, 1C 1 CD4027 AL 02735 1820-0938 1
U27 COS/MOS Hex Inverter, IC 1 CD4069B Y 02735 1820-1404 1
128 COS/MOS Triple 3-Input OR Gate, IC 11 CD4075BY 02735 1820-1405 1
129 12-Bit D/A Converter, IC 1 28480 1820-1856 1
U30 Operational Amplifier, IC 1 M301 AH 27014 1820-0223 1
U31 Operational Amplifier, 1C 7 LM308 27014 1826-0172 1
U32 5V Requlator, 1C 1 MC7805C 04713 1826-0144 1
U33 Dual £15V Reg. IC 1 МС1468 04713 1826-0140 1
VR Diode, zener 12.4V, 5% 1 28480 1902-3185 1
VR2 Diode, zener 16.2V, 5% 1 28480 1902-0184 1
6-7
Table 6-4.
Replaceable Parts
REF. MFR. HP
DESIG. DESCRIPTION TO.t MFR. PART NO. CODE PART NO. RS
21,2 Resistor Network, 3k/6.2k, 5%,.02W 2 216C 56289 1810-0136 1
23 Resistor Network, 4.7k, 5%, 0.15W 1 200C-1858-CRA 56289 1810-0125 1
Front Panel — Electrical
DS1,2 indicator, Light Emitting Diode 2 1990-0521 1
(LISTENING, POWER ON)
R1-3 var. (10-turn) ww, 10k, +56%, 2W 3 28480 2100-3624 | 1
ZERO ADJUST (R1), D/A FULL
SCALE ADJUST {R2), POWER
SUPPLY FULL SCALE FINE
ADJUST (R3)
RA var. (10-turn) ww, 100k, 5%, 2W 1 28480 2100-3623 | 1
{POWER SUPPLY FULL SCALE
COARSE ADJUST)
Power Module {includes voltage
selection PC board and fuse)
C1 fxd, metalized paper, 0.1uF, 20%, 1 28480 0160-4065 1
250V (connected between power
module terminals B and E)
F1 Line Fuse, 125mMAT (100/120Vac 1 MDL 1/8 71400 2100-0318 | 1
operation)
Chassis — Electricai
C42 fxd, cer. 0.02uF, 20%, 2KV 1 28480 0160-2568
2 Unipolar/Bipolar Switch 1 28480 3101-1299 | 1
T4 Power Transformer 1 28480 59501-80090 | 1
J2 Connector J2 (5-pin) 1 28480 1251-4654
Mechanical
FC Socket, 14-pin (Address Switch S1) | 1 28480 1200-0485
Front Panel 1 28480 59501-00001
Sub-Front Panel 1 28480 50501-00002
Rear Pane! 1 28480 59501-00003
Standoff, potentiometers {R1-R4) 4 28480 59501-20001
Side Trim 2 28480 5001-0438
Frame, front 1 28480 5020-8813
Foot, 1/2 module 4 28480 5040-7201
Trim strip 1 28480 5040-7203
Top cover 1 28480 5040-7208
Bottom cover 1 28480 5040-7209
Side cover 2 28480 5040-7212
PC board guide 6 28480 5040-7861
Heatsink {ATU32) 1 28480 1205-0282
Clip, LED mount {DS1, 2} 2 28480 1400-0547
Retainer ring 2 28480 1400-0540
Header Assy. 2 28480 5060-0458
6-8
Table 6-4,
Replaceabie Parts
REF, MER. HP
DESIG. DESCRIPTION TO. MER. PART NO. CODE PART NO. ¡RS
Switch, bracket (52) 1 28480 | 59501-00006
Switch, spacer 1 28480 1830-23201
Switch, shaft 1 28480 59501-20004
Barrier block, cover 1 28480 59501-20002
Barrier block, guard 1 28480 59501-20003
Standoff 1 28480 0380-0091
Knob,pushbutton (52) 1 28480 0370-0970
Transformer bracket, left 1 28480 59501-00004
Transformer bracket, right 1 28480 59501-09005
Bezel, pushbutton knob 1 28480 0370-0451
Miscellaneous
Line fuse, 62.5mAT (220/240Vac
operation} 1 MDL-1/16 71400 2110-0311
floater pad 28480 9211-1913
packing carton 28480 9220-2090
Line cord — One supplied according
to the user's location, as follows:
U. S., Canada, Japan, Italy and Spain 28480 8120-0050
United Kingdom 28480 8120-1351
East/West Europe, U. À. R. 28480 8120-1689
Australia, New Zealand 28480 8120-1369
6-9
SECTION VII
CIRCUIT DIAGRAMS AND COMPONENT LOCATION DIAGRAMS
7-1 INTRODUCTION circuit board At. The functional circuit areas identified
on Figure 7-2 correspond with the schematic.
7-2 This section contains the circuit diagrams necessary
for the operation and maintenance of the 59501 À HP-IB 7-5 SCHEMATIC DIAGRAMS
Isolated D/A, Power Supply Programmer.
7-6 The schematic diagram for Mode! 59501 À, Figure
7-3 COMPONENT LOCATION DIAGRAMS 7-3 consists of two sheets. Sheet 1 illustrates the ac input
circuit and the bias voltage supplies. Schematic notes are
7-4 The component location illustrations, Figures aiso included on sheet 1, Sheet 2 illustrates the digital
7-1 and 7-2, snow the physical location and reference processing and analog output circuits.
designation of each part on the chassis and on printed
FOWER MODULE — ADDRESS
/ SWITCH 7
Aalst /
/
{ ascar 1}
. * .
Te
mp re
ии
POWER SUPPLY FULE SCALE ADA,
a e ©
982
DEl
LISTENING ON
Figure 7-1. Bottom View, Cover Removed
7-1
|
451007 0437 TINY indio 0/4 | NO-NYNL Od
SEN
$047 7051
> ATdans **
Figure 7-2. Main Board Assembiy A1, Component Location
7-2
rl wei |
POWER MODULE
—— SLU
GEM AB wera
ZEV 3
GAN Ai В
L el }
„ок “В
3
Re YEAR =
: ; Y
: BLE FG Ë
2}
: | 3
: a
- sec 3
: pl
EN щение pon Ey
} Wits TAGE SELECTION |
; PLUG-IN HOARE Ra |
Daiana votes vote vee mem quee vel
¥ FLEE FL 35 I05m6 FOR 1907 [Z0VET INFUT OR BE Sma
FOR 22024090 INPUT
XX INFUT VIAL.TAGE CHOICE AVAILABLE ON EACH END AND
BOT SICES GF RS, BOARD. YOL TACO (5 SELECTED BY
SEEN TINO 5.6. A0ARD CORRECTLY AHD PUSHING BOARD
INTO SLOT SECTION YE GUVES DETAILS
SOREMATIC NOTES
L ALL ASS TORS ARS IN OHMS, 4/66, Ti, GUALESS OTHERWISE iNDICATER
2. ALL CAPAGPIORS ARE 1 MICROFAR ADO, UNLESS CTHRFWISE iRUICATED.
2 FIN LOCATIONS FOR INTEGRATED CIRCUITS {Aid « AIRS ARO RES3ISTOR NE WORES 1 АЙ" АЕ) АНЕ AS
FOLLOWS :
meet =
d ~~ E
Ea В
E =z
= EF El
_, Е с в
| L я
7 a e EE E
E 1 ES E 53
d Eo E 5 E
Е un E Tal la
En Ta В Ei Ч
Е = = a =
a = Е el El
ï $ E
AILS, LEE, AEE - LET, ALLE
UI-U25, La!
UES, HEE
40 FH VO 6
E ARO AN
dí , HE
| 2 |! 2
ATEEZ АЦЕВа wie
AZI, ZE AZ
(TOR VIEWS)
+:
© {UNREG)
RQTE Id
? a EV
7a
ona Y
FA
:
}
ЕВ
= — 1
LUNES
MOT 3H
51
19%]
N RE
о НИКИ С Weil AE = sel
SELF Wh su
+ +54
LH, UE,
a Li
Lie Sia US, uUH
р i “1
154 45V E !
! i
ri al |
wy Leu 0 Le LCL. À
UNS ES
LAS LAT Че ее
o SENT
vay vos 1 :
PD e Y np ; :
clr 3 08 | e ics os — i
A a mmo A A AAN [I in o Ed
10 EN IN KA | КОМ c
24 27 528 Usa 0,
fm oh ay ie = TANT
+ “ор № Бонн else ;
VE : i
T $
= Jp эн Е i
I y i }
warn road 12 7
ce 03 a c5 cr el Lc ! [Eye | 2
TR Am OF AE PES RE 7 \ 7
SD EDO DOV LEON | см 7
4. THE SQUARE SLATED PADS ON THE P.O BOARDS INDICATS CNE OF THE FOLLCWING-
E. VEN TSP Al EC OR FESSSTCR NETWOME.
E. POSITIVE END DF A POLAIRE CAPACITOR
CO CATRORE OF A 000 CR EMITTER ОР А TRANSISTOS.
5 THE LISTEN ADDRESS FOR THE 5S501A 19 SPECIFIED BY THE FIVE ADDRESS SWITCHES OH THE REAR
FAKEL. THE SUSGESTÉÜ LISTEN ADDRESS 6f 76" 15 SELECTED AT THE FACTORY, HOWEVER, ANY ONE
OF E LISTEN ADRESSES CAN BE SELECTES.
THE REAR PANEL UNIFOLAR/SIPOLAR SWITCR ¿PUSH iN, PUSH-SUT TYPE! 15 ВЕТ ОКО THE UNTOLAR
FOSITIO FL PUSHEC- 38 AS SHIPPEO FROM TRE FACTORY,
TY DEROTES FRONT PANEL MARKING
=
a
ane a nn a
BT DEMOTES REAR PAKEL MARKING.
Y, FIN LOCATIONS FOR FET'S (G5, 07- QF) AND TRANSISTORS (41-04, G6, 12-4), ARE AS FOLLOWS:
je D * “EN Ec >
Lu NES NA
M6, Gr -49 FER ERE AI de, Ga,
Mie Dis
OD IES,
10, F 17% TO + 404 MEASURED BETWEEN U33-4 AND ME
ЭН. — ГРУ ТО - 20M SE ASLRED BETWEEN US3-B AND Y
Figure 7-3 {Sheet 1). Model 59501A, Blas Voltage Supplies, Schematic Diagram
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