Operating Features
1.
D
is
p
l
a
y
:
3
Y2
digit LCD (1999)' 0.55"
H,
decimal point, range, over
range and low battery indicators.
2.
Zero Capacitance Ad
j
ust Knob:
Use to adjust to zero, approx.
± 20 pF (200 pF, 2000 pF and 20 nF ranges only).
3.
.. +.
-"
Input Connectors and Jacks:
Polarized for polarized
capacitors.
4.
Range Select Switch:
Rotary switch for selecting ranges (9 ranges
from 200 pF to 20 mF [20,000 JJF]).
The CX-920A Digital Capacitance Meter displays readings on a 3�
digit LCD. The 9 ranges give precision readings from 0.1 pF to 20 mF
(20,000 JJF). These ranges cover virtually all the capacitors used in elec
tronic engineering labs, production, service shops and schools. This
meter can be used to check tolerances, sort values, select precision
values, measure unmarked capacitors, select matched sets plus
measure cable, switch or PCB layout capacitances. Battery operation,
light weight and compactness makes the CX-920A a truly portable in
strument.
Model CX-920A Specifications
General
Display:
3
Y,
digit LCD, 0.55"
H
with polarity
Overrange Indication:
A "1" with the 3 least significant digits blanked.
Operating Environment:
O°C to 50°C (below 70% relative humidity).
Storage Environment:
-
20°C to 6O°C battery removed and below
80% relative humidity.
Temperature Coefficient:
0.1 x specified accuracy per °C, which is
only applicable for the temperature range of <18°C or >28°C.
Power:
9V alkaline or carbon-zinc battery (NEDA 1604).
Battery
Life: 150 hours typical with carbon-zinc cells.
Battery Indicator:
Display indicates when battery is below operating
voltage.
Dimensions, Weight:
151 mm long x 70 mm wide x 38 mm thick
(6"
x 2.8" x 1.5"), 200 g (7 oz.).
Capacitance:
Range
200 pF
2000 pF
20 nF (.02 JJF)
200 nF (.2 JJF)
2 JJF
20 JJF
200 JJF
2000 uF
20 mF (20,000 JJF)
Resolution
0.1 pF
1 pF
10 pF
100 pF
1 nF
10 nF
100 nF
1
JJF
10 JJF
-2-
Accuracy
± 0.5% of rdg + 1 D + 0.5 pF
±0.5% of rdg + lD
±0.5% of rdg + lD
± 0.5% of rdg + 10
± 0.5% of rdg + 10
±0.5% of rdg + lD
±0.5% of rdg + lD
±2% of rdg+1D
±4% of rdg + lD
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