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MODEL 228A
Voltage/Current Source




QUICK REFERENCE GUIDE
INTRODUCTION
CONTENTS

CONDENSEDSPECIFIC~~TIONS ........................... 3
FRONT PANEL FENTURES ................................ 7
............................ 22
i .............................. 25
TVRES ................................ 30
10 ............................... 37
PROGRAMS ............................................ 42
BMPCarXT.. ........................................ 43
AppleII.. ..................... ........................ 45
HP85 ................................................. 47
HP9825A ............... ........ .......... ....... 48
HP9816.....................~.~................~ ...... 49
DECLSI I, ... ............................... ........ 50
PET,CBM2001.................................~ ....... 52




2
CONDENSED SPECIFICATIONS

AS A CONSTANT VOLTAGE SOURCE




3
AS A CONSTANT CURRENT SOURCE
COMPLIANCE
RANGE cJuTP"T ,I YR.. I8vwCI ,saurcs 01 sink,
ACCURACY" ACCURACY
MAW ,I YEAR, MAXI- II YEAR,
MUM 18W8T MUM 18v8T




0.m *o.ltmJA *,O.l%+0.,mA *,ol.o" *,o.l%+.K!ml",
+,O.lO" +iO.l%+ wmv,
GENERAL
SAFETY PRECAUTIONS
POWER UP SEQUENCE




7
STANDBY/OPERATE
VOLTS/MEMORY STEP




AMPS/DWELL TIME
DISPLAY MODIFY GROUP

DISPLAY MODIFY

0 SELECT 0 ENTER




SELECT
DECADE




ENTER




13
DATA


DATA
& e, A
A " ti
MOD e?
MEMORY CONTROL GROUP

MEMORY
CONTROL
1
STOP

0 0 STAR1




STOP/START
SINGLE STEP/SINGLE
CYCLE/CONTINUOUS
COMPLIANCE
STATUS GROUP




0 MODULATE I

0 MODULATE "

0 SINK ONLY



LOCAL




REMOTE/TALK/LISTEN




19
MODULATE l/MODULATE V



SINK ONLY




20
PROGRAM CONTROL GROUP

PROGRAM CONTROL

0 PROGRAM




0 CANCEL




PROGRAM
FRONT PANEL OPERATION




SOURCE MODE




SINK MODE
OPERATION
24
FRONT PANEL PROGRAMS




PROGRAM 1 COPY
PROGRAM 2 SINK ONLY




PROGRAM 3 IEEE
PROGRAM 4 MOD V




27
PROGRAM 5 MOD I




PROGRAM 6 TEST




28
PROGRAM 9 RESET

DESCRIPTION




OPERATION




29
QUICK DISCONNECT
SENSE




DESCRIPTION
OPERATION




32
I MONITOR




33
TRIGGER (IN and OUT)

TRlGGER
@ @J
DESCRIPTION




34
,
IEEE-488 PROGRAMMING
SF




MI


RP




TR




38
r 1
PROGRAMS




42
IBM PC or XT
(Keithley 8573 GPIB Interface)




43
PROGRAM COMMENTS
APPLE II
(APPLE Interface)
COMMENTS




Example: ,"= 1,.
lx?ma zs = CTRL-L.
HP 85




47
HP 9825A




PROGRAM COMMENTS
HP 9816
DEC LSI 11
PROGRAM COMMENTS
PET/CBM 2001




PROGRAM COMMENTS