Keithley 160B User manual

Instruction Manual
Model 160B
Digital Multimeter
Contains Operating and Servicing Information
for Model 160B Digital Multimeter and
Model 1602B Digital Output
01975, Fourth Printing, December 1977
Keithley Instruments, Inc.
Instrument Division
Cleveland, Ohio, U.S.A.

INSTRUCTION MANUAL
MODEL 1606
DIGITAL MULTIMETER
(AND MODEL 16028 DIGITAL OUTPUT)
@COPYRIGHT 1975, KEITHLEY INSTRUMENTS, INC.
FOURTH PRINTING, DECEMBER 1977, CLEVELAND, OHIO, U.S.A.

CONTENTS
CONTENTS
:,OOEL ibOJ
SECTION
SPECIFICATIONS. .
I. GENERAL INFORMATION. ......
I-l, ,NTROD"CT,ON ........
i-2. FEATURES
. .
l-3. WARRANTY lNFORHATlON. ............
l-4. CHANGE NOTlCE ................
l-5. OPTIONAL MODEL 16028 D,G,TAL o"TP" T. .....
1-6. OPTIONAL MODEL 1688~ RECHARGEABLE BATTERY PACK
2. INITIAL PREPARATlON ................
2-l. GENERAL ...................
2-2. INSPECTlON. .................
Z-1. PREPARATION FOR "SE
3. OPERATlNG INSTRUCTIONS . .
3-l. GENERAL
3-2. HOW TO SELECT POWER. .
3-3. HOW TO MAKE INPUT CONNECTION!
3-4. HOW TO SELECT FUNCTlON
3-5. HOW TO MEASURE VOLTAGE
3-b. HOW TO MEASURE RESISTANCE.
3-7. HOW TO MEASURE CURRENT .
3-8. NOISE CONSIOERATIONS
3-9. THER"AL EHFS . .
3-10. MAGNETIC FlELDS .
3-11. AC ELECTRlC FIELDS .
3-12. SHIELDING. .
-
.
.
*
.
I
. .
.
3-13. HOW TO "SE THE ANALOG OUTPUT
3-14. HOW TO USE MODEL 1608 OFF-GROUND . .
3-15. HOW TO USE MODEL 16028 DlGlTAL OUTPUT.
3-16. HOW TO RACK MOUNT THE MODEL 1608
4 THEORY OF OPERATION. . . . . . . . . : :
4-l. GENERAL .
4-2. ANALOG AMPLIFIER ClRC",TRY : : : : : :
4-3. ANALOG-TO-DIGITAL CONVERTER. .
4-4. POWER SUPPLY . . . .
4-S. MODEL 16028 DIGITAL OVTPUT . : :
5. ACCESSORIES. .
MODEL 1601 AC DC PROBE
MODEL 1688A RECHARGEABLE BATTERY bAiK: :
MODEL 1683 UNIVERSAL TEST LEA0 KIT
MODEL 1600 HIGH VOLTAGE PROBE.
MODEL 1682 RF PROBE... .
MODEL 1609 CALlBRATlON COVER .
.
MODEL 1681 CLIP-ON TEST LEAD SET
6.. "AINTENANCE.
.
6-1. GENERAL.
6-2. REQUIRED TEST EQUIPHENT. t
6-3. PERFORMANCE VERIFICATION .
b-4. ADJUSTMENT/CALIBRATION PROCEDURE
7. REPLACEABLE PARTS. ...........
7-l. GENERAL. .............
7-2. ORDERING INFORMATION .......
.
.
.
.
.
., .
7-3. SCHEMATlCS
ii
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PAGE
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26
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37
45
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15
45

ILLUSTRATIONS
rzg. NO. IIcLe
1 “fme”sio”al Data. --___--____-____-_____________________
2 Tilt Bail Positions. ------------------------
3 *pant panel. -------------------------------------------
4 *ottcm View Showing Line Cord. -------------------------
5 Rear View Showing Line Switches. -------__--_____--_____
6 Mode11688A Rechargeable Pack. ------------------
Batrery
7 Exploded View of Model 160B/1688A.----------------------
8 Installatio" of Pack. ------------------------
Battery
9 Battery Test Location. ------------_----___-------------
10 Front Panel Controls. -------------------_--------------
11 Imcarion of Protection Fuse. _---____-_________-________
12 Voleage Measurements "sing Model 1601 AC/DC Probe. -----
13 Current Measurements Using Made1 1651 Shunt. ----------
14 Floating operation. --_---__-__-_______________________
15 Model 16028 ,,+&tal O”f,,“t. _____-____-___-____-________
16
Exploded View of Model 16011602B. __-_-----__--____--__
17 lnstallati,,,, of &,&I 1602~. _---_______-____-__________
1.8 Rear Panel Digital Connector. -------------------
output
19 Timing Diagram for Model 1602~. ------------------------
20 Rack M,,unti,,g of Model
1.3,~. __--_______--______________
21 Overall Block Diagram. _---____-___-____--_____________
22 DC Voltage Operation. -------------_----__-------------
23 Resistance operation. __-____-_________--______________
24 current Operaelan. -------------------------------------
25 Absolute Value Deeector. ---__--_-________-_____________
26 LSI Block Diagram. ----_---___----___--_________________
27 A/D Converter Diagram. _--___-_________--_______________
28 Identification af Se~,ent.s and Mulriplex lines. --------
29 Tap and Bottom Cover Assembly. -------------------------
30 Locarion of Calibration Ad,ustmenfs. ------------------
31 Location of Test mints.
32 Location of Chassis Connections. ----------------------
33 Location of Fuses. -------------------------------------
34 case Outline - Integrated CirCUitS. --------------------
35 case Outline - Integrated circuits. _---_______________-
36 Case Outline - Integraeed Circuits. _--____--_____--__-
37 case Outline - Inregrated circuits. --------------------
38 case ourline - Transistors.
39 Case Outline - Thick Film Networks. _---__-_____-_______
40 Case Outline - Thick Film Networks. --------------------
41 Case O"tline - Custom LSI. ---_----_---_-_-------------
42 Component Layout* pc-349. --_-_--______________________
43 component Layout, pc-352. ----_---_-----____--_______I_
rage
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0976

SPECIFICATIONS MODEL 1608
I
10.7
(27: 5
i
I
DIMENSIONS IN INCHES (MM)
I
FIGURE1.
Dimensional Data.
1174

SPECIFICATIONS
Calibrated at 25” *ST
war,mte* to, 1 year
AS A DC VOLTMETER
AS AN OHMMETER

Liz2 m
NORMALBENCH POSITION LEVEL POSITION - TILTEAIL AT FRONT
J
&
45" POSITION
-
LEVEL POSITION - TILTBAIL%

MODEL 160B
SECTION 1. GENERAL INFORMATION
l-l. INTROD”CTION. The Model 1608 is a wide-range
digital multimeter capable of measuring voltage, cur-
rent, and resistance. me Model 1608 offers SeYen
ranges of voltage from lrn" to 1000 volts, nine ranges
of current from 1O"A to 1ooomA, and ten ranges Of re-
sistance from 1n to lOOOM12. The Model 1608 display
is 3 digifs plus 100% overrange.
1-2. FEATURES.
a. Voltage sensitivity to 1 micravole per digit.
b. current .se"Giti"ity to O.OlnA per digit.
C. Resistance sensitivity to 0.001n per digit.
d. Floating capabilify LO _+1*00 "OlC.5 above case.
e. Built-in analog output.
f. Optional Made1 1602R Digital Output
s. Optional Model1688ARrchargeable "attery Pack.

HANDLE AND
TILT BAIL
I
LINE
COW
STORAGE
~
S S
BAT TEST A
BAT TEST B
I
CONDENSEDOPERATING INSTRUCTIONS S = SCREW
LOOSEN FOR
DISASSEMBLY
2 1174

MODEL 1608 INITIAL PREPARATION
5112 J113 !
ANALOGOUTPUT 520I
SWITCHES SHOWNFOR
OPERATION FROM105-125V LINE
DiGi
OUTF
J302
:TAL
'UT
3