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  TM 11-6625-2724-12
(2) Accuracy.
b. Null Detector.
(a) Dc. ±3% of range.
(1) Ranges:
(a) Input range (AC and DC). Null ranges.
(b) Ac. ±3% of range within frequency and
voltage ranges listed under Ac accuracy as a dif-
(b) 1v. 0.001, 0.01, 0.1v.
ferential voltmeter.
(c) 10v. 0.0001, 0.01, O.lv.
g. Electrical Design. Completely solid state.
(d) 100v. 0.01, 0.1, 1, 10v.
h. Reference Element. T e m p e r a t u r e c o m -
(e) 1000v. 0.1, 1, 10, 100v.
pensated zener diodes.
(2) Input resistance. 100 megohms on all
i. Regulation of 1100-volt Reference Supply.
ranges except 10 megohms minimum on 0.01 and
0.0005% for a 10% line voltage change.
0.001 volt ranges.
j. Recorder Output. Available at rear panel
(3) Type of circuitry. E l e c t r o n i c c h o p p e r
terminals.
amplifier with synchronous demodulation.
k. Polarity. Reversible via front panel switch,
c. Accuracy (10% overrange of capability).
input posts are not reversible.
(1) Dc: ± (0.01% of input + 0.001% of range
l. Warm-up Time. Less than 1 minute, normal
+ lO uv) from 0 to 1100 vdc at 23° C +2 °C, up to
80% relative humidity (R.H.).
operation.
(2) Ac (% of input) at 23° C ±2 o C; less than
m. Stability of ll00 volt Reference Supply. 1 0
ppm/hr; 20 ppm/day; 40 ppm/month; 90 ppm/year.
80% R.H.
(a ) 50 Hz to 10 kHz; 0.001 to 500V: ±(.05%
n. Common Mode Rejection.
+ 25 uv).
(1) Dc. 120 db (1 uv/volt of common mode
voltage).
(b) 50 Hz to 10 kHz; 500 to 11OOV: ±0.1%.
(2) Ac. Up to 100 v peak-to-peak 50-500 Hz
(f) 2 0 k H z t o 5 0 k H z ; 0 . 0 0 1 t o 1 1 O V ;
± ( 0 . 1 5 % 0 + 25uv).
produces no measurable instrument error.
o. Temperature Range.
(g ) 20kHz to 50kHz; 110 to 11OOV: ±O.5%.
o
o
(1) Storage. - 4 0 C to +70 C .
(h) 10kHz to 100kHz; 0.001 to 11OV:
o
(2) Operating. 10°C to 40 C. Derate dc ac-
±0.5%.
curacy outside these limits to 0°C and 50oC at 15
(i) 50kHz tQ 100kHz; 110 to 11OOV: 1.0%.
±0.005%. of dial
d. Kelvin-Varley Divider.
ppm/C. Derate ac accuracy outside these limits to
0°C and 50°C at 40 ppm/C.
setting above 1/10 of full scale, Derate 15 ppm/°C
from 0°C to 10oC and from 40oC to 50°C.
(3) Humidity. Up to 80 RH below 25oC; up to
e. Resolution.
70% RH above 25°C.
(1) Meter. 10 uv maximum (1 ppm of range
p. Input Power. 115-/230 volts ac ± 10%, 50 to
above 1v, 10 ppm of lV range).
500 Hz. Rear panel switch for changing from 115-
volt ac to 230-volt ac operation. ON-OFF switch on
(2) Voltage dial. 10 uv maximum (10 ppm of
range).
front panel and fuse on rear panel. Power cord 68-
f. Solid State Voltmeter.
inches long with 3-wire grounding plug.
(1) Range and input resistance.
q. Size. 17-inches wide x 3 1 /2-inches high x 14-
1/2-inches deep. (19 inches wide after installation of
DC input
AC input
Range
rack mounting brackets.)
r. Weight. 12 1/2 pounds.
s. Mounting.
No internal fans. Will operate
satisfactorily without overheating for 24 hours when
restricted on all sides and the rear with clearance of
two inches. Brackets are used for rack mounting.
Electronic Voltmeter ME-2O2C U comprises an
operable equipment.
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