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Model 412A Page 2 of 2
SPECIFICATIONS (CONT?D.)
OHMMETER
Resistance Range: Resistance from 1 ohm centerscale to 100 megohms centerscale in nine
decade ranges.
Accuracy: *5% of reading from 0.2 ohm to 500 megohms. 510% of reading from O.lto
0.2 ohm and from 500 megohms to 5000 megohms.
Voltages and Currents:
Open Circuit Short Circuit Open Circuit Short Circuit
Range Volts Current Range Volts Current
x1 10 mv 10 ma XlOK lv 100 Fa
x10 100 mv 10 ma XlOOK lv 10 Fa
XlOO lv 10 ma X1M lv 1 Fa
XlOOO lv 1 ma XlOM lv .1 pa
XlOOM lv .01 pa
AMPLIFIER
Voltage Gain: 1000 maximum
AC Rejection: Approximately 3 db at 1 cps, 80 db at 50 and 60 cps.
output: Proportional to meter indication; 1 volt at full scale. (Full scale corre-
sponds to 1.0 on upper scale.)
Output Impedance: Less than 2 ohms at 0 cps.
Noise: Less than 0.1% (rms) of full scale on any range.
Drift: Negligible.
GENERAL
Isolated Input: Input terminals are isolated from case (power line) ground by a minimum
leakage resistance of 100 megohms shunted by 0.1 Ff. Maximum potential
difference between common Iead and case ground: 500 v peak.
Power: 115/230 volts *lo%, 50-60 cps, 35 watts.
Dimens ions : Cabinet Mount: 11-1/2 in. high, 7-1/2 in. wide, 10 in. deep.
Rack Mount: 5-1/4 in. high, 19 in. wide, 10 in. deep.
Weight: Cabinet Mount: Net 12 Ibs., shipping 17 Ibs. |
ACEC
