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Model 590 CV Analyzer
Quick Reference Guide
A GREATER MEASURE OF CONFIDENCE
INTRODUCTION
This quick reference guide contains dascriptions of various
features and information concerning the operation of the
Model 590. Also included are programming examples us-
ing various controllers.
01986, Keithley Instruments, Inc.
instrument Division
Cleveland, Ohio, U.S.A.
Document Number: 690-903-01 Rev. A
1
CONTENTS
Front Panel Operation ......................... 4
Control Group ........................... 4
Trigger Group ............................ 7
Bias Group ............................. 9
Platter Group ........................... 11
Data Group ............................ 14
Miscellaneous Functions, .................. 16
Mathematical Functions ................... 18
Displays. .............................. 19
Connections ........................... 20
Waveform Definitions ..................... 24
IEEE466 Programming ....... , , .. ~, .. ~, ...... 34
Device-Dependent Commands .............. 34
Data Format ........................... 43
SRQ Mask and Status Byte Fotmat ........... 45
UO to U26 Status Word Formats ............ 46
Translator ............................. 64
Pmgrams .................................. 67
IBM PC or XT .......................... 68
Apple ,, ............................... 70
HP-ES.. .............................. 72
HP.9616 ............................ 74
HP-9825A ............................. 76
DEC LSI 11 ............................ 76
PET/CBM 2001 ......................... 80
2
SAFETY PRECAUTIONS
1. Before operation, ground the instrument through a prop-
erly earth grounded power receptacle.
2. Before servicing, disconnect the instrument from the
power line and all other equipment, and consult the Model
690 Instruction Manuai.
3. Do not touch any terminals while the instrument i8 turn-
ed on or connected to any other test equipment.
For additional safety information, see the
"Safety Precautions" pages in the back
of this manual.
3
FRONT PANEL OPERATION
LOCAL-Pressing this key when the unit is in remote
(REMOTE onl returns the instrument to the local mode
(REMOTE off) and restoros operation of other front panel
controls unless LLO (local lockout) is in effect.
POWER-Controls AC line power to the instrument.
CONTROL GROUP
CONTROL
RANGE
q AUTO
0 0x10
RANGE-Press RANGE briefly to manually select range.
Pressing and holding RANGE for more than % second places
the unit in autoranging. Press RANGE again to cancel auto
and stay on present range. SHIFT RANGE switches in X10
attenuator to extend lOOkliz measurement range to 20nF
with external optional input adapter (Model 69041.
FREQ-Press FRE`, to select test frequency, lOOkH2 or
1MHz 8, 15mV RMS. An error message will be displayed
if the appropriate modules are not installed, or if you at-
tempt to "se the X10 atten"ato, at IMHz. FREQ is also used
to disconnect the test signal from the test jacks. IThe display
`will show DISCONNECT.1
MODEL-MOOEL selects series or parallel device model
(series resistance and capacitance or parallel conductance
and capacitance).
2 PS 2Mn 2Mfl
20 ps 200 kll
200 ps ??I "kII 20 kfl
2mS 2 kn 2 kn
20mS 200 n
FILTER-FILTER toggles the single-pole 37 Hz low-pass
analog filter on and off. Note that the filter incroasss instru-
ment response time.
RATE-Press RATE then A/v ior RATEI to scroll through
the rate selection menu: 1, 10. 75, or 1000 readings per
second (or press the numeric key Indicated below). Press
ENTER to select RATE, or QUIT to return to the previous
rate. The slower rates will provide more resolution and
quieter readings, as indicated below.
Nominal DIgItal
Key # lute Aesolutlon Readings Filtering
0 1000/set 3 1%* c only NO
: 75/set 3K * C.G,V NO
10/set 4Ya C.G.V YOS
3 I/%% 4% C.G,V Yes
`Data displayed only after sweep is finished.
NOTE: Rates are nominal; see instruction manual for actual
rstes.
ZERO-ZERO provides means for supression of B constant
value from the readings, or it can be used to cancel lnter-
nal offsets to maximize ~cccuracy. Note that enabling zero
can reduce the dynamic range of the measurement.
CAL-Pressing CAL performs an automatic one point
calibration of the selected module on the current range us-
ing an internal 2OpF or 2OOpF Idapending on range)
capacitor and is intended to compensate for shoe-term ther-
mal drift. CAL should be used for each range at both fre-
quenoies for optimum accuracy of those ranges.
NOTE
Do not press and hold CAL when power is first
turned on, as the instrument will go into its
diagnostic program.
6
TRIGGER GROUP
MANUAL-Pressing MANUAL will initiate a one-shot or
sweep sequence depending on the selected trigger mode.
This key is always operational regardless of the selected
trigger sourca Pressing MANUAL while a reading or sweep
is in progress will result in a trigger owrrun error messega
Dashss in the display indicates that a trigger is required.
MODE-Press MODE then A/T. MODE, or numeric key (see
list below) to select a trigger mode: one shot or sweep, then
press ENTER. In one-shot. the instrument will procss6 one
reading per trigger. while in sweep the unit will process a
complete reading sweep.
SOURCE-Press SHIFT SOURCE then MODE 01 A/V to
scroll through available trigger sources (or press the spy
propriate numeric key in the list below). and then press
ENTER.
Front panel modes and 80wces include:
Numeric Dlaplay
Key # Message
0 TRIGGER MODE One reading per
I-SHOT trigger
1 TRIGGER MODE one sweep pw
SWEEP trigger
0 TRIGGER SOURCE FP Front Panel MANUAL
button'
1 TRIGGER SOURCE External trigger pulse
EXT
2 TRIGGER SOURCE IEEE talk command
TALK
3 TRIGGER SOURCE IEEE GET command
GET
4 TRIGGER SOURCE X IEEE X command
"Always enabled regardless of selected source.
8
WAVEFM1M
0
PARAMETER
0
ON-The ON key turns the internal or external bias voltage,
which is applied through the OUTPUT jack, on or off.
WAVEFORM -Selects the type of bias waveform to be pro-
grammed. or the external bias 8ourc~. as indicated below.
Use WAVEFORM, A/T, or appropriate numeric key to select
the waveform type, then press ENTER.
3
Available waveforms include:
Numeric Dlsplay
Keyif Messaga DBSCrlpllon
0 DC Constant DC level in the range of
f20V.
1 STAIR %&staircase lstsp either up or
2 DSTAIR Dual staircase lstep up then down
or down then upl.
3 PULSE Pulse train lconstant level or step
up or down).
4 EXT Voltage from external source IEIAS
INPUT jsckl.
PARAMETER-Use PARAMETER or A/T to ~elecf para-
meter to be programmed, then key In the value using the
numeric keys. Press ENTER when finished programming all
ptWWllt?t~1S.
Progremmeble paremeters include:
Display
Message Llmlls Resolution
START TIME lmssc to 65ssc lmsec
STOP TIME lmsec to 05sec lmssc
STEP TIME lmsec to 65sec lmsec
FIRST BIAS V -20v to +2ov 5mV
LAST BIAS V -20v to tzov 5mV
STEP BIAS V -20v to tzov 5mv
DEFAULT BIAS V -20v to t2ov 5mV
COUNT' I-450 Il.360 et
1,000/set rate1
10
"Selscts number of readings storsd for external and DC
bias waveforms.
"`Voltages may be programmed in ImV 8teps. but are set
in 5mV steps.
NOTE: Multiply programmed times by 1.024 for actual time
interwals.
PLOTTER GROUP
0
GRID
I
SETUP
0
ABORT
11
PLOT-Pressing PulT plots the date located in the selscted
buffer IA or SI on a" intelligent plotter over the IEEE-488
bus using the current SETUP paremetsrs. The plotter must
be set tc the eddresssble mode using e primary address
of 6. The controller must be disconnected from the bus for
stand-alone plotting.
GRID-Pressing GRID draws labels, .%~a. end other pera-
meters as appropriate for the selected buffer and the SETUP
pem"leters.
SETUP-Pressing SETUP enters the plotter setup menu
which allows selection of the parameters below. Use incre-
ment or decrement tc ~crcll through menu selections the"
press the appropriate "umber (belcwl when desired selec-
tic" is dlsplayed, then ENTER.
ABORT-Press SHIFT ABORT tc ceeso plotting or grid
generation.
12
DATA GROUP
Increment iAl)-Increment is used to scroll through menu
selections for other front panel operating modes such as
TRIGGER MODE, PLOTTER SETUP, and BIAS WAVEFORM.
Inclement is also used to scroll through buffer locations
when displaying buffer data.
Decrement /II-Liks the increment key, decrement is us-
ed to scroll through parameter menus and buffer locations.
but in the opposite direction.
ENTER-ENTER is used as the last step in the menu or
pmamefer selwction process fa actually perform the opera-
tion being programmed.
14
WIT-Pressing WIT when scrolling through a pwameter
menu will rsturn the instrument tc the normal front panel
display and restcres the previouslv programmed mode. CJJIT
also exits the buffer.
BUFFER-Pressing BUFFER allows You tc view the contents
of buffer A or buffer B on the front panel displays. Once
in this mode, select the desired buffer (A or 8) and use in-
crement or decrement tc sequentially access various buf-
fer Iccations. The BUFFER LED will be on while the unit is
displaying buffer data. Pressing BUFFER while accessing
the buffer displays the last valid buffer location. Pressing
ENTER displays the first valid buffer location gocation #I).
A -B-Places the entire ccntents of buffer A into buffer
8. including capacitance, conductance, and bias voltage
values. Buffer A is the buffer into which A/D readings are
stored. Buffer A will be cleared after the data is transferred.
SHIFT-SHIFT adds a secondary function tc certain other
front panel keYs. including BUFFER. If You press a key which
has no second function after enabling shift, the primary
function of that key will bs performed.
NUMERlC DATA KEYS 10.9, +, -)-These keys are used
to enter numsric data when programming such item8 as bias
parametsrs. If You wish tc restore the previously prc-
grammsd values, press the QUIT key instead of ENTER.
Pressing the - key scrolls the curser to the right.
MISCELLANEOUS FUNCTIONS
To access the following modes, press SHIFT before the key
in question.
CABLE CAL-Pressing this key performs open-circuit cable
correction only at 1MHz. Note that the opposite ends of
the connecting cables must be left open during the ccrrec~
tic" process. Once the correction is complete, you will be
given an opportunity to store the correction scheme for the
particular cable IO-S1 you we using at the update option.
Note that cable correction reduces the dynamic range of
the measurements
CABLE #-Use this key to select which of seven previously
stored cable correction setups obtained above that you wish
to USB IO-8). Once selected, the unit will automatically use
the previously stored cable correction parameters when
making measurements. Note that correction setup #7 turns
off cable correction and installs default values to the front
panel.
SELF TEST-Use this key to perform B self test on many
internal ocmpcnents, including display and the hardware
multiplier.
SAVE-SAVE allows you to save up to seven ccmplsre in-
strument configurations in NVRAM. To use this feature,
simply select the operating configuration and then press
the SAVE button. Key in the position (O-61 that you wish
to save. Note that state 0 is the configuration the unit will
*ssume upon power up.
16
RECALL-Use RECALL to assume machine operating con-
figurations that wnre stored with the SAVE key, or the fac-
tory configuration. Upon entering this mode, you will be
prompted for a configuration number. Key in the YSIUB (O-7)
and press ENTER. Note that state 7 is a factory default can-
figuration permanently stored in ROM and cannot be altered.
State 0 is the configuration the instrument assume8 upon
power up.
The following modes can be saved and recalled.
Mode Factory Default
2nF
100kHz'
On
Rate 10,sec
zero Off
Trigger Mods SVW3p
Trigger Source Front Panel
Bias Source Off
Waveform DC
Start, stop. step time 1msec
First. last. step, default bias ov
count 450
"59O/lOOk or 690/100k/lM
IEEE-Press IEEE to verify or program the IEEE-489 primarv
address. Use the number keys to select a primary address
value 03Ol. Press ENTER to program the new address. The
programmed address will go into effect immediately, and
is stored in non-volatile RAM.
MATHEMATICAL FUNCTIONS
The following calculations are performed on data presently
stored in the data buffers and are not stored in memory.
In order to use these functions, You must select buffer
display with the SUFFER key.
K-Pressing l/C' inverts the capacitance value in each
data word of the selected buffer and then squares it; the
value for each point will be displayed as you access that
word location.
C/Co-This feature allows you to display normalized capaci-
tance data. The maximum capacitance YSIUBis used for C,.
C...-Pressing c... displays the maximum capacitance
value stored in the selected buffer.
C,-Co-This key allows you to subtract each capacitance
value in buffer El from the corresponding values in buffer A.
IV,-V,IC=CONST.-This function rotates the C-V plot axis
by go0 and gives a display of the change in voltage (AVI
as 8 function of constant capacitance.
C vs t-While in C vs t, you can use A/v to scroll through
various buffer locations. The buffer location number will
be shown in the bias voltage display. You can calculate the
time at a specific location for DC and staircase waveforms
as follows:
ts= Itstart + ,tstep + l/RI ,Sll x 1.024
18
Where: t9 = time at B specific buffer location
tstert = programmed stert time
tstep = progemmed step time
R = reading rate Ireadings per second)
9 = buffer location number
NOTE
Use actual reading ret88 as described in instruc-
tion manual.
DISPLAYS
CAPACITANCE DISPLAY-The normal capacitance display
is e 4% digit +21,999, -19,999 count value with engineer-
ing units in pF or nF. Note that display resolution is 3% digits
et the 76 and 1000 reading per second rates.
CONDUCTANCE DISPLAY-The nominal conductance
display is a 4% digit 13% digits et the 75 end 1000 reeding
per second rates), t21.999. -19,999 count value, with
engineering units else displayed in pS or mS for conduc-
tance (parallel model1 or kR or Mll for resistance fseries
model).
BIAS VOLTAGE DISPLAY-The 4% digit bias voltage dis-
play indicetes the programmed or actual measured velue
of the internal +2OV bias ~wrce or the applied external
bias voltage (*2OOV). While programming bias parameters.
the display will show the progwnmsd value. When the unit
is displaying readings or stored buffer valufa the display
will show the biss voltage as measured by an internal A/D
converter. This display will also show buffer location in C
vs t. Note that display resolution is 3% digits at the 75 and
1000 reading per second ret%
19
CONNECTIONS
FRONT PANEL
Test INPUT and OUTPUT-Connect the device under test
to ths test INPUT and OUTPUT jacks as shown in Figure
1. Use RG-58 coaxial cable for best results. Cable correc-
don should bs used when measuring at 1MHz for optimum
Bccvrac".
20
REAR PANEL
VOLTAGE BIAS INPUT-This SNC connector is intended to
apply external bias voltage up to -tZOOV DC, 50mA max-
imum. Note that the input is internally fused to protect the
instrument from over current conditions.
VOLTAGE BIAS OUTPUT-This BNC output jack provides B
means to monitor the selected bias voltage fextemal or in-
ternal) applied to the circuit under test.
CONDUCTANCE ANALOG OUTPUT-This output jack pro-
vides B scaled voltage proportional to the conductance
reading. The rsnge of the output is 0.2V, full scale. For 8x-
ample, the nominal output value will be IV with a 1011s
reading on the 2OpF12OfiS range.
CAPACITANCE ANALOG OUTPUT-This SNC jack provides
B scaled output voltage that is proportional to the capaci-
tance reading. The output range of the CAPACITANCE out-
put is 0-2V full scale. For example, the nominal outfwt
voltage with B 14OpF reading on the 2OOpF12OOpS range
will be 1.4V.
EXTERNAL TRIGGER INPUT-A SNC jack to be used for ap-
plying a trigger pulse to initiate a one-shot or sweep reading.
Pulse specifications are shown in Figure 2.
EXTERNAL TRIGGER OUTPUT-This BNC jack provides 8
pulse when the instrument completes a one-shot reading
or reading sweep, depending on the selected trigger mode.
Output pulse specifications are shown in Figure 3.
22
I
Ffgure 2. ExIernaf Ttlgger Input Pulse Specifioatlons
Flgure 3. External Trigger Output Pulse Speclflcations
23
WAVEFORM DEFINITIONS
Figure 4. DC, One-Shot
24
I
Figure 5. DC, SWWP
25
1
9
- 1;
4
Ffgum 6. Single, Staircase, One-Shot
26
Figure 7. Single StaIrcase, Sweep
27
Figure 8. Dual Staircase, One-Shot
28
29
Flgure ID. Pulse lkaln, bne.Shot
30
I-
Flgure 11. Pulse lhln, Single SW-P
31
Flwm 12. External, OneShot
32
Flgure 13. External, SInglO-SWeEP
33
IEEE-488 PROGRAMMING
DEVICE-DEPENDENT COMMANDS
Plotter (A)
A0
Al
A2, plot Plot: O=C YS V: 1 =G YS V;
Z=l/C'w3V; 3=c/c,vsv;
4=c "St; 5=lC,-C,l "9 v;
S=IV,-V.IC=CONST
A3. grid Grid: 0 = Full grid: 1 = Axis
A4. buffer 1 ",%r O=A/D buffer IAl:
1 =Plot buffer @I
A5, pen Pen: O=No pen; 1 =Pen #I:
2=Pen #2
AE. line Line: 0 = DOT at points;
1 = Spaced dots; 2 = Dashes:
3=Long dash: 4=Dash dot;
5=Long dash, short dash;
B=Long, short. long dash;
7=Solid line
A7. label Label: O=Full labels; 1 =Label
axls and divisiona; 2 = Label
axis only
A8.n. Xmin, Xmax X axis limits. n = 0: Autoscsl-
ing lminimum/msximum bias).
n = 1: Program X axis
minlmum IXminl and maximum
IXmaxl values.
A9.n. Ymin, Ymsx Y axis limits. n=O: Default
values, 0 to full scale. " = 1:
Program Y axis minimum
W;;J and maximum fYmaxl
34
Save/Recall Cable Setups (C)
C0.n Recall cable #n (Osna71
C1.n save csbk #n IOSll56
~
35
tm Button(Ii)
Emulate button press:
H12 SHIFT
HI5 ENTER
H16 (A-6)
HZ0
H23 ZNUAL
H25 ZERO
HZ6 CAL
HZ7 FILTER
H29 RANGE
H30 FRED
H31 MODEL
Cable Parsmeters (I)
IO Measure cable p~mmeter~
(driving point1
Il. "1. "2, "3. "4 Assign cable parameters
KOlnl +jn21, Klln3+jn4)
12. "1. "2. "3. "4, Assign test output cable
parameters: Ah1 +jn21.
Bin3+jn4l.
n6, fl6, n7, "6 Ch5tin6L Dh7 tjn6l
13. n1, n2, n3, n4 Assign test INPUT cable
parameters: Ah1 +jn2,.
n5, n6, n7, "6 Wn3+in41, Ch5+jn*I
Din7+jn61
Zero cable open
I:. C, G Measure SOlKCB pa,afneterS.
step 1
IS. C, G Measure SOU,CB ,,a,arnefer~.
st*p 2
36
Sell Test (J)
Jl Perform self test
EOI disabled. hold-off enabled
EOI enabled. hold-off disabled
Bias Control (N)
Bias off
i': Bias on
t
37
6 = CA -CL; 7 = IV1 - V.IC,,r.
Model: 0 = Parallel: t = Series.
C, (used with C/C,:
05Co~20E-9
E!llter (P)
PO Filter off
Pl Filter on
Callbratlon (a)
00 Drift correction
NORMAL MODE
Ql
Q2. C, G First capacitance oal point
(13, C. G Second capacitance cal point
Q4. C, G Conductance cal point
DRIVING POINT MODE
06
Q6. C, G First capacitance cal point
07. C. G Second capacitance cal point
cm Voltage calibration offsets
a9, v
36
I Range (R) 1
(100kHr IMHz
RO Autorange on Autorange on
Rl 2pF/2pS ZOpFlZOOfiS
R2 ZOpF/ZO,,S 2OpF/200,~S
R3 2OOpF/2OOpS 200pF12mS
R4 2nF/2mS 2nF/20mS
R5 RI x10 on Error
R6 R2 x10 on EWCf
R7 R3 x10 on EWX
R6 R4 x10 on EtKX
R9 Autorange off. stay on range
Resdlng Rate (S)
so lOOO/sec, 3% digits
w 75/set. 3% diuits
si tS/ssc, 4% digits
lO/sec, 4% digits
s3
54 lisec. 4% digits
NOTE: Reading rates are nCminal
One-shot on external pulse
sweep on external pulse
One-shot C" front panel
sweep on front panel
39
FS
c1
Ui
U2
u3
u4 Buffer A zen, gr&p
Buffer A bias group
Buffer A bias voltage
Buffer A bias time
U6 Buffer A position and time
I u9 Buffer B range group
"10 Buffer B triaaer arouo
Ull Buffer B zero group
U12 Buffer B bias group
u13 Buffer B bias voltage
u14 Buffer B bias time
u15 Buffer B position and times
Buffer A maximum/minimum
cao*citance
Biffer A maximum/minimum
conductance
Buffer A maximum/minimum
Voltage
Buffer 6 maximum/minimum
cepscitance
Buffer 6 msximum/minimum
conductance
Buffer B maximum/minimum
Voltage
Global parameters
fseries/psrallel, Co value)
Plotter parameters lplot, grid,
line, etc.1
IEEE cutput parameters IO, G,
B, Y, KI
IEEE input parameters IL. C, H,
K. MI
40
Not used
mnslator reserved word list
Translator NEW/OLD state
First=first bias; Last=last
4=External; Start=start time;
r]OTE: Multiply programmed time6 by 1.024 to obtain BC-
tual times
Execute (X)
X Execute Commands
41
Terminator (Y)
YO
Yl
Y2
Y3
42
L Flgure 14. Data Format
43
44
SRQ MASK AND STATUS BYTE FORMAT
Flgure 16. SRQ Mask and Status Byte Format
46
UO426 STATUS WORD FORMATS
I
Flgure 17. UO Status Word Format
(Hardwam/Sottware Ftevlslon)
46
n
-
Figure 18. Ul Error Status Word Format
47
Flgure 19. U2 Status Word Format (Sulfer A Range Group)
Flgure 20. U3 Status Word Format (BufferA lklgger Gmup)
49
Figure 21. U4 Status Word Format (Butter A Zero Group)
Flgure 22. U5 Status Word Format (Sutter A Bias Group)
49
Flgum 23. LIB Status Word Formal (BufferA Bias Voltages)
50
Flgure 24. II7 Status Word Format (Buffer A Bias Times)
Flgure 25. Ug Status Word Format
(Buffer A Posltlon and Time)
51
Flgum 26. LIB Status Word Format (Suffer B Range Gmup)
I
Flgum 27. UIO Status Word FOrmat
(Buffer B ltlgger Group)
52
Figure 29. U12 Status Word Format (Buffer B 819s Group)
53
Flgure 30. U13 Status Word Format
(Butter B Bias Voltages)
Figure 31. U14 Status Word Format (Butter B Bias Times)
I
Figure 32. U15 Status Word FOrmat
(Butter B Po8ltlon and The)
55
Figure 33. U16 Status Word Fcrmat (Suffer A
Maximum and Mlnlmum Capacitance)
Figure 34. U17 Status Word Format (Buffer A
MaxImum and Mlnlmum Conductance)
56
I
Flgure 35. U18 Status Word Fcrmat (Suffer A
Maxlmum and Mlnlmum Voltage)
I
Figure 38. Ul9 Statue WC?d FCrCtCl @Utter B
B Maxlmum and Mlnlmum Capacitance)
67
Flgure 37. U20 Status Word Fcrmat (Suffer S
Maxlmum and Mlnlmum Conductance)
Flgure 39. U21 Status Word Fcrmat (Buffer B
MaxImum and Mlnlmum Voltage)
55
Figure 39. U22 Statue Word Format
(Global Prog~ittttdng PmVttetem)
59
I I
I I
Flgurs 40. U23 Statue Word Format
(Plotter Prcgrsmmlng Parameters)
60
FAA
Figure 4,. U24 StSt"8 Word Format
(IEEE Output PSrSmStSm)
61
Flgurs 42. U25 Ststus Word Format
(IEEE Input Psrsmstsrs)
62
Flgurs 43. U28 Ststus Word Format
(Cable CorrectIon Psrsmstsrs)
63
TRANSLATOR
Table 1. ltsnslstcr Reserved Words and Characters
word or
Character Descrlptlcn
I
ALIAS Define words, enable Translator
NEW Enable Translator, combine words
OLD Disable Translator
LIST Get list of Translator words
FORGET Erase Translator words
Terminate Translator definition string
Wildcard to define parameter position
Figure 44. U27 Status Wclrl Format
(Trsnslstcr User Nsms List)
64
I
L
I35
-
66
PROGRAMS
The following programs are designed to be B simple aid to
the usw They are not intended to suit specific needs.
Detailed programming information can be found in the
manual.
67
IBM PC or XT
(Keithley Model 8573A Interface)
The following program sends a command string to the
Model 590 from an IBM PC or XT computer and displays
the instrument reading string on the CRT. The computer
must bs equipped with the Keifhley Model 6573A IEEE-469
tnterface and the DOS 2.00 operating system. Model
9573A software must be installed and configured as
described in the inStruction manual.
DIRECTIONS
1. Using the front panel IEEE key. set the primary address
of the Model 590 to 16.
2. With the power off, connect the Model 590 to the
IEEE-496 interface installed in the IBM computer.
3. Type in SASICA on the computer keyboard to get into
the IBM interpretive BASIC language.
4. Place the interface software disc in the default drive, type
LOAD"DECL". and press the return key.
5. Add the lines below to lines 1-6 which are now in
memory. Modify the address in lines 1 and 2, as describ-
ed in the Model 6673A Instruction Manual.
6. Run the program and type in the desired command string.
Far example, to place the instrument in autorange and
lMHz frequency, type in ROFlX and press the return
key.
7. The instrument reading string will then appear on the
display. For example, the display might show
NCPM+ 1,2345E- 12.
6. To exit the program, type in EXIT at the command
prompt and press the return key.
66
PROGRAM COMMENTS
Clear screen.
Find board descriptor.
Find instrument
descriptor.
Set primary address to
15.
Set timeouts.
set REN *rUtI.
Prompt for command.
See if program is to be
halted.
Check for null input.
Add space for proper
hold off.
NOTE: For conversion to numeric variable. make the follow-
ing changes:
130 RD="AL
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