GENERAL RADIO COMPANY 1608-A Operating Instructions Manual page 16

OPERATING PROCEDURE
TABLE 2-1
DC SOURCE AND DETECTOR CONNECTIONS
FULL SCALE RANGE
1100 mD
I
11 D 1110 D 1100 Dill kD 110 kD 11100 kD
R s
VERTICAL METER MVS
HVS
Bridge
HORIZONTAL LVS
METER
"
G p
FULL SCALE RANGE
1100 nU
I
11 j.LU 1110 j.LU 1100 j.LU
III
mU 110 mU 11100 mU
Bridge
VERTICAL
HVS METER
HORIZONTAL
METER MVS LVS
HVS HIGH-VOLTAGE SUPPLY
MVS MEDIUM-VOLTAGE SUPPLY
LVS LOW-VOLTAGE SUPPLY
350 v open-circuit
35 v open-circuit
3.5 v open-circuit
TABLE 2-2
EIA STANDARD TEST VOLTAGES
Fixed Composition Resi stors (RS 172)
RESISTANCE BRIDGE
RANGE EIA TEST VOLTAGE BRIDGE VOLT AGE*
2.7-9.9 D
R s
llD 0.5 - 1 v
**
10 -99 D R s
1l0D
0.5 - 1 v **
100 - 999 D R s 1l00D 2.5 - 3 v
19.2-23v
1000 -9999 D R s
II kD
8 - 10 v 13.4 - 16.7 v
1O-99kD R s
1l0kD
24 - 30 v 25.6-32v
100kD-1MD
R s
1100kD
80-100v 81 - 101 v
1MD-up
G
p
1nU 80 - 100v 81 - 101 v
TABLE 2-3
EIA STANDARD TEST VOL TAGES
Fixed Film Resistors (RS-A6)
Low-Power Wire-Wound Resistors (REC-117 up to 9999 D)
RESISTANCE
BRIDGE RANGE EIA MAX VOLTAGE MAX BRIDGE VOL TS*
less tha'n 10 D R s
11D 0.3v **
10 - 99 D R s
1l0D
Iv
**
100 - 999 D R s 1100 D 3v 23v
1000 - 9999 D R s
llkD 10v 16.7v
10 - 99kD R s 1l0k D 30v 32v
100kD - 1MD R s 1l00kD 100v 101 v
1MD - up
Gpo
1nU 100v 100v
*
This is the voltage from the LOW UNKNOWN terminal to chassis. In the EXT DC position, this is
also the voltage at the EXT GEN terminals.
**
This voltage varies with the resistance of the unknown (see paragraph 4.3).
11