BK Precision 878A, 879 Instruction Manual
INSTRUCTION MANUAL
MANUAL DE INSTRUCCIÓNES
Dual Display LCR Meter
Model 878A / 879
Medidor LCR de Doble Exhibicion
Visual
Modelos 878A/ 879
1
DUAL DISPLAY L/C/R METER
INSTRUCTION MANUAL
Model-A = 879
Model-B = 878A
2
TABLE OF CONTENTS
PAGE
Safety
3
Introduction
5
Front Panel Illustration
6
LCD Display Ill ustration
7
How to Operate
9
Operati ng Instruct ions
13
Data Hold
13 Static Recording
13 Dissipation Factor / Quality Factor/ Phase Angle
13 Test F requency
14 L/C/R function selector
14 Relative
14 Tolerance
14 Auto/manual ranging
15 Automatic Fuse Detection
15
Parallel / Series Mode 15
Calibration
16 Auto Power Off/ Disable Auto Power Off
17 Low Battery Indicat ion
17 Backlit Display
17 Communication
18
General Specification
19
Electrical Specification
20
Maintenance
28
Spanis h M anual
33
3
SAFTEY
Read "SAFETY INFORMATION" before using this meter.
NOTE
The meter is a hand-held, battery-operated instrum e nt fo r testing
inductance, capacitance and resistance. If this device is damaged or
something i s missing, cont act the place of purchase immediately.
This manual contains information and warnings must be followed to
ensure safe operation as well as to maintain the meter in a safe
condition. Some common international electrical symbols used in this
manual are shown below Table:
DC - Direct Current
See Explanation In The Manual
Table 1-1. International Electrical Symbols
Before using the meter, read the following safety information carefully.
In this manual, "WARNING", is reserved for conditions and actions
that pose hazard(s) to the user; "CAUTION", is reserved for conditions
and actions that may damage your meter.
4
SAFETY INFORMATION
To ensure that you use this device safely, follow the safety guidelines
listed below:
•
This meter is for indoor use, altitude up to 2,000 m.
•
The warnings and precautions should be read and well
understood before the instrument is used.
•
Use this device only as specified in this manual; otherwise,
the protection provided by the meter may be impaired.
•
When measuring in-circuit components, first de-energize th e
circuits befo r e connecting to the test lead s.
•
Disc h arge capacitor b efore testing.
•
The meter is safety-certified in compliance with EN61010
(IEC 1010-1) Installation Category II (CAT. II) 50 V,
Pollution Degree 2 envi ronment.
•
Use the meter only as specified in this manual. Otherwise,
the protection provided by the meter may be impaired.
•
The power for the meter is supplied with a single standard
9V battery. But also a line operation is possible using a 12V
AC to DC ad aptor. If a power adaptor is selected, plea se be
sure t o u s e fu lfi lled t h e s af et y req u i rem en t s of a r ele van t IEC
standard.
5
INTRODUCTION
This 19,999-count L/C/R hand-held meter is a special microprocessorcont rolled meter for mea su rin g func tion s of in duct anc e, cap acit anc e and
resistance. Extremely simple to operate, the instrument not only takes
absolute parallel mode measurements, but also capable of series mode
measu rement . The meter provi des di rect a nd accu rate m easuremen ts of
inductors, capacitors and resistors with different testing frequencies. It is
selecta ble for auto and manual ranging.
Front panel pushbuttons maximize the convenience of function and
feature selection such as data hold; maximum, minimum and average
record mode; relative mode; tolerance sorting mode; frequency and
L/C/R selection.
The test data can be transferred to PC through an optiona l full isolat ed
optical RS232C interface.
Backlight display for easy reading in dark places (Model-A only).
A tilt stand provides position flexibility for viewing and operating the
meter. The over-molding rubber case protects the meter to be stronger.
With single 9V battery operation is standard for the meter, a DC 12V
pow er ada ptor can also be used as an optio na l power input.
6
FRONT PANEL ILLUSTRATION
1.
LCD display
2.
Power ON/OFF button
3.
RS232 and Ba cklit button
4.
Dissipation factor, Quality factor and Phase an gl e selection
button
5.
Test frequency selection button
6.
Inductance, Capacitance and Resistance function selection
button. Parallel and series mode selection button
7.
Tolerance mode s electio n button
8.
Data h old, Maxi mum, Minim um and Averag e readi ng select ion
button
9.
Range selection button
10.
Relative mode and Calib ration selection button
11.
DC 12V adaptor inp ut
12.
Input sockets and Terminals
REL
CAL
AUTO
TOL
AUTO
TOL
REL
CAL
RS232
HOLD
REC
HOLD
REC
RS232
1
8
9
10
11
2
3
4
5
6
7
12
u
u
RS232 RS232
u
u
Figure-1. Front panel for Model-A and Model-B.
7
LCD DISPLAY ILLUSTRATION
12
13
14
15
22
24
23
21
25
26
1
16
17
18
19
20
2
3 4 6 10
119875
RS232
u
u
Figure 2. LCD Display.
1.
AUTO:
Auto-ranging indicator
2.
LCR:
L, C or R function indicator
3.
MAX:
Maximum reading indicator
4.
AVG:
Average reading indicator
5.
REL:
Relative mode indicator
6.
MIN:
Minimum reading indica t or
7.
DH:
Data hold indicator
8.
Θ:
Phase angle indicator (Model-A only )
9.
Q:
Quality factor ind icator
10.
D:
Dissipation factor indicator
11.
:
Secondary display
12.
:
Beeper tone indicator for tolerance mode
13.
%:
Tolerance (percentage) indicator
14.
deg:
Phase Angle degree indicator (Model-A only )
15.
kHz:
Fr eque nc y i nd icator
16.
MAX AVG MIN:
Recording mode indicators
17.
TOL:
Tolerance mode indicator
18.
1%5%10%20%:
Tolerance sorting (percent) indicator
8
19.
:
Auto power- off indicator
20.
:
Low battery indicator
21.
PAL:
Para l lel mode indicator
22.
SER:
Series mode indicato r
23.
MkΩ:
Resi stance (Ohm) indicator
24.
:
Inductance (Henry) indicator
25.
:
Capacitan ce (Farad) indicator
26.
:
RS232 ind icator
Special Indication Charac ters
: Indicates short connectors
: Indicat es open connectors
: Indicates calibration mode
: Indicat es damaged or open fuse
9
HOW TO OPERATE
Caution
•
When measuring within a circuit, the circuit must be deenergiz ed before conn ectin g the test leads.
•
The instrument that used in dusty environment should be
wiped and cleaned regularly.
•
Do not leave the instrument exposed to direct heat from the
sun or beat s ource for long periods.
•
Before removing the cover, ensure that the instrument is
disconnected from any circuit and in power "OFF" position.
Note:
For achieving optimum precision for all L, C and R
measurements at either the highest or lowest ranges, it is
recommended to calibrate the meter b efore testing.
10
I
nductance Measurement
1.
Press the "
POWER
" button to tu rn on the meter.
2.
Press “
L/C/R
” button to sel ect inductance measurement.
3.
Insert a n induc tor int o componen t recept acle s ocket or co nnect th e
test clip to the component leads as required.
4.
Press “
FREQ
” button to select testing frequency.
5.
Press “
D/Q
” button to select Q factor for secondary display.
6.
Read the display readings for inductance value and quality factor.
AUTO
TOL
REL
CAL
HOLD
REC
RS232
u
Figure-3. Induct an c e M easurement.
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