Keithley 169 Bedienungsanleitung
Keithley
Multimeter
169
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Instruction Manual
Model 169
Digital Multimeter
01979, Keithley Instruments, Inc.
Cleveland, Ohio, U.S.A
Document Number 30161
TABLE OF CONTENTS
SECTION PAGE
1.
2.
3.
4.
5.
GENERAL INFORMATION. .......................
l-l
1.1.
INTROOUCTION ........................
1-l
1.3.
FEATURES .......................... l-1
1-5.
WARRANTY INFDKMATION .................... 1-2
l-7.
CHANGE NOTICES ....................... 1-2
1-9.
SAFETY SYMBOLS ....................... l-2
l-11. SPECIFICATIONS ....................... 1-2
OPERATION. ............................ 2-l
2-l. INTRODUCTION ........................ 2-l
2-3.
UNPACKING AND INSPECTION .................. 2-l
2-5.
PREPARATION
FOR
USE. .................... 2-l
2-6.
Installation of Batteries, if required ........... 2-1
2-7.
CONTROLS, INDICATORS AND CONNECTORS. ............
2-l
2-8.
Display ........................... 2-1
2-10. Front Panel Switches .................... 2-2
2-12. Input Connections. ..................... 2-2
2-14. Tilt Bail/Handle ...................... 2-4
2-16. INITIAL FUNCTIONAL CHECK .................. 2-4
2-18. OPERATING INSTRUCTIONS ................... 2-4
2-20. DC VOLTAGE MEASUREMENT ................... 2-5
2-22. AC VOLTAGE MEASUKEMENT ................... 2-5
2-24. AC
OR
DC CUKRENT MEASUREMENT
................ 2-5
2-26. RESISTANCE (n) MEASUREMENT ................. 2-6
PERFORWINCE VERIFICATION ..................... 3-l
3-1.
GENERAL ........................... 3-l
3.3.
RECOMMENDED TEST EQUIPMENT ................. 3-1
3-5. ENVIRONMENTAL CONDITIONS .................. 3-l
3-7.
PERFORMANCE VERIFICATION PROCEDURE ............. 3-1
3-9. Initial Conditions ..................... 3-2
3-11. DC Volts Checkout. ..................... 3-2
3-12. AC Volts Checkout. ..................... 3-2
3-13. Resistance Checkout. .................... 3-3
3-14. DC Current Checkout. .................... 3-3
3-15. ANALYSIS .......................... 3-3
ACCESSORIES. ........................... 4-l
4-1.
GENERAL ........................... 4-l
4-3.
MODEL
1600
HIGH VOLTAGE PROBE. ............... 4-l
4-5.
MODEL
1651
50-AMPERE SHUNT ................. 4-1
4-7.
MODEL 1681 CLIP-ON TEST LEAD SET .............. 4-l
4-9. MODEL 1682 RF PROBE. .................... 4-1
4-11.
MODEL 1683 UNIVERSAL TEST LEAD KIT ............. 4-2
4-13. MODEL 1684 CARRYING CASE .................. 4-2
4-15. MODEL 1635 CLAMP-ON AC CURRENT PROBE ............ 4-2
4-17. MODEL
1691
GENERAL PURPOSE TEST LEAD SET .......... 4-2
4-19.
MODEL
1699
SPARE PARTS KIT ................. 4-2
4-21. MODELS
1010
and 1017 RACK MOUNTING KITS. .......... 4-2
THEORY OF OPERATION. ....................... 6-l
5-l.
5-3.
5-6.
5-7.
5-10.
5-12.
5-14.
GENERAL. ................
OVERALL OPERATION. ...........
SIGNAL CONDITIONING. ..........
AC/DC Voltage Measurements .......
AC/DC Current Measurements .......
Resistance Measurements. ........
A/D CONVERTER. .............
........ 5-l
........ 5-l
........ 5-l
........ 5-I
........ 5-I
........ 5-2
........ 5-2
I ii
i i
TABLE OF CONTENTS (Cont'd)
SECTION PAGE
5-16. DISPLAY CIRCUITS ...................... 5-2
5-18. REFERENCE SOURCE ...................... 5-3
5-20. LOW BATTERY DETECTOR .................... 5-3
5-22. INPUT PROTECTION ...................... 5-3
5-24. Voltage Protection ..................... 5-3
5-27. Current Protection ..................... 5-3
5-29. Ohms Protection. ...................... 5-3
6. MAINTENANCE. ........................... 6-1
6-1. GENERAL ........................... 6-l
6-3. CALIBRATION. ........................ 6-l
6-5. Recormended Calibration Equipment. ............. h-l
6-7. Environmental Conditions .................. h-l
6-9. Case Cover Removal ..................... 6-1
6-11. Calibration Adjustment ................... 6-I
6-14. TROURLESHOOTING. ...................... 6-2
6-16. Special tiandling of Static Sensitive Devices ........ 6-2
6-18. Power supply ........................ 6-3
6-20. A/D Converter and Display Driver .............. 6-3
6-22. AC Converter ........................ h-3
6-24. Voltage Divider, Reference Source and Ohms Circuit ..... 6-3
b-26. Current Circuitry. ..................... 6-3
6-31. LIQUID CRYSTAL DISPLAY REPLACEMENT ............. 6-4
6-33. BATTERY REPLACEMENT. .................... 6-9
6.35. CURRENT FUSE REPLACEMENT .................. 6-9
7. REPLACEABLE PARTS. ........................ 7-D
7-I. GENERAL ........................... 7-o
7-3. ORDERING INFORMATION .................... 7-D
J-5. FACTORY SERVICE. ......................
7-O
7-J.
SCHEMATIC. ......................... 7-O
7-9. COMPONENTS LAYOUT. ..................... 7-D
J-11.
MODEL
1699
SPARE PARTS KIT ................. 7-O
ILLUSTRATIONS
FIGURE TITLE JhGJ
l-l
2-l
2-2
2-3
4-l
4-2
4-3
4-4
5-I
5-2
5-3
5-4
6-1
6-2
6-3
6-4
6-5
7-l
Model lG9. ....................... I-1
Installation of Batteries. ............... 2-o
Model 169 Front Panel Display. ............. 2-O
Operating Controls ................... 2-3
High Voltage Probe and RF Probe. ............ 4.2
Current Current Probe and Shunt. ............ 4.3
Convenience Cable and Connectors ............ 4.3
Carrying Case and Hack Mounting Kits .......... 4.4
Model 169 DMM Overall Signal Flow Block IDiagram. .... 5-5
Simplified AC/DC Voltage Measurement .......... 5-6
Simplified AC/DC Current Measurement ..........
5-J
Simplified Resistance Measurement. ........... 5-8
Calibration Adjustment Location. ............ 6-2
LCD Assembly ......................
6-4
Integrator Waveform. .................. 6-6
AC/DC Converter Waveform ................
6-J
Current Fuse Removal/Replacement ............ 6-9
Covers and Panels. ...................
7-4
MOOEL 169
SECTION 1. GENERAL INFORMATION
GENERAL INFORMATION
l-l.
INTRODUCTION.
l-2. The Model 169 is a rugged, low cost, battery-
operated digital multimeter that provides full
measurement capability for many general purpose
applications. It provides dccurate readings from
IOOuVldigit to 1OOOV on five five dc and ac voltage
ranges, lOOnA/digit to 2000mA (2 amperes) on five dc
and and five ac current ranges, lOIlmn/digit to 20
megohms on six resistance ranges. Ranges and
~ccurxy are listed in the Table of Specifications
on page 1-3.
l-3. FEATURES.
l-4. The Model 169 incorporates features that help
prevent instrument damage through customer abuse and
provide maximum instrument reliability, operator
safety and simplicity of operation. Some of these
features are:
e A ZOOO-count (3-l/2 digit) liquid crystal dis-
play (LCD) with large 0.6" numerals, function
and and range annunicators, a low battery indi-
cator (BAT). Appropriate decimal point and
minus sign (-) are also displayed, positive
polarity is implied.
l
The The Model 169 is built rugged. full bench-
sire cdse is molded from impact-resistant dnd
flame-retardant plastic. Effective input pro-
tection prevents damage on all functions.
Voltage ranges dre protected up to 1400V peak,
resistance ranges ranges to 300VRMS and current
dre protected by dn externally accessible 2A
(25OV) fuse.
0 Pushbutton switches dre color coded to the
front panel for quick and edsy selection of
function and range. The decimal point is duto-
matically positioned by the rdngc pushbutton.
Annunciators on the display Indicate the
selected function and range. Improper range
and function combinations are indicated by
contradicting function and/or range d""u"cid-
tars appearing dt the sdme time.
FIGURE l-l. Model
169.
l-l
l-
BATTERY
ADJUSTMENT
RlO,
-__
FIGURE 2-1. Installation of Batteries.
NEGATIVE
DISPLAYED,
POSITIVE
IWLIED WHEN LW
MINUS l-1 CFF BATTERY MILLI (10-3)
MICRO I 10-6)
AC DIPLAYEO, I
DC IWLIE" I
3-l/2 DIGITS
WITH DECIMAL
POINT
FIGURE 2-2. Model 169 Front Panel Display.
2-O
I
MODEL 169 OPERATION
TABLE 2-1
Initial Function Check
SELECTION DMM DISPLAY
STEP FUNCTION RANGE INPUT READING REMARKS
1
open 000 Power on, all other switches out. (-1 mdy flash.
2 ACV 200"V Shorted 00.0 ACmV
3 DC" 200mV Shorted 00.0 "V
4
A and n* 2k open .I00 mAkn Display reads 2mA current shunt on 2kn range.
Checks current fuse.
5
A and n*
200n
and Open 1.00.0 ,,An
2mA
Display reads 2mA current shunt on 200n range.
(approx. loon)
6 A and and n* 2DOn Open 1.0.0 uAfl Display reads 20mA current shunt on 200n range.
2olTd (100)
7 ”
2DM Shorted 0.00 M"
8 n 2DOOk Shorted 000 k"
9 " 20DOk Open
1
kn Overrange indication, leading 1 with all other
digits blanked.
*Press both pushbuttons simultaneously.
SET PWER Q4 @SELECT F"NCTI(N @SELECT @CONNECT IEZ302,A
RANGE SOJRCE
FIGURE 2-3. operating COntPOlS.
z-3
I
MODEL 169
Z-20.
OC VOLTAGE MEASUREMENT.
Z-21.
The Model
169 reads dc voltage from 1OOpV/
digit to 1000 volts. The maximum displayed reading
is is 1999 with appropriate decimal point. Polarity
automatically sensed and the minus sign (-) will be
displayed, if applicable. Overrange is indicated by
a "1" and three blanked digits, except on the 1OOOV
range. On the the 1OOOV range, display can read
beyond the maximum allowable input voltage. Maximum
allowable input: 1OOOV dc, 1400 peak ac. Use the
Model 169 to measure dc voltage as follows:
OPERATION
A
CAUTION
A
CAUTION
00 not the exceed maximum allowable input
voltage. Instrument damage may occur.
a. Turn on power with the ON/OFF pushbutton;
select dc volts with the V and AC/DC pushbuttons.
The appear. "V" annunciator should
b. Select the the range from five ranges avail-
able. The range decimal point is positioned by the
pushbutton. The 'm' annunciator will appear if
2QOmV range is selected.
c. Connect the the signal to be measured between
INPUT HI and LO jacks; observe the voltage reading
on the display.
2-22.
AC
VOLTAGE
MEASUREMENT.
2-23. The Model 169 reads ac voltages from lOOuV/
digit to 1000 volts. The instrument is average
responding, calibrated to read the root mean square
value of of a a sine wave within frequency 45Hz to
5kHz. The maximum reading is 1999 with appropriate
decimal point. Overrange is indicated by a "1" fol-
lowed by three blanked digits, except on the IOOOV
range. On the the 1OOOV range, instrument can read
beyond the maximum allowable input voltage. Maximum
allowable input voltage:
1ooov Pm,
1400V peak,
106V.Hz maximum. Use the Model
169 to measure
ac voltage as follows.
00 not the exceed maximum allowable input
voltage. instrument damage may occur.
a.
Turn on power With the ON/OFF pushbutton;
select dc volts with the V and AC/DC pushbuttons.
b. Select the the range from five ranges avail-
able. The range decimal point is positioned by the
pushbuttons. The "rn' annunciator will appear if
200mV range selected.
C. Connect the the signal to be measured between
INPUT Hi and LO jacks; observe the voltaqe readin
on the display.
2-24.
AC OR DC CURRENT HEASUREIIENT.
2-25.
The Model
169
reads ac and dc currents from
lOOnA/digit to 2000 milliamperes (ZA). For ac mea-
surements the instrument is average rsponding, cali-
brated to read the root mean square value of d sine
wave of d frequency within 4%~ to
1kHz.
The maxi-
mum reading is 1999. with appropriate decimal point.
Overrange is indicated by d
“1”
followed by three
blanked digits. Input overload protection is pro-
vided by ZA, 250V dc or rms, quick-blow fuse. Use
the Model 169 to measure, ac as or dc current
follows.
A
CAUTION
00 not install .3 larger capacity current
fuse than the one originally supplied (ZA,
25OV).
Instrument damage may occur'.
a.
Turn on power with the ON/OFF pushbutton.
Select ac or dc with the AC/DC pushbutton; depress A
pushbutton. The "A" annunciator should appear along
with the "AC" annunicator if dc was selected.
2-5
Produktspezifikationen
| Marke: | Keithley |
| Kategorie: | Multimeter |
| Modell: | 169 |
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