GENERAL RADIO COMPANY 1263-8 Operating Instructions Manual page 8

TYPE 1263-B AMPLITUDE-REGULATING POWER SUPPLY
1.2.2
CONNECTORS. The following connectors are on the Type 1263-B
Amplitude-Regulating Power Supply:
Name
Description
Function
POWER
Four-terminal Direct plug-in connection for power
socket cables of General Radio Unit Oscilla-
tors.
MODULATION Two-terminal Connection to modulation terminals of
plug oscillator. For General Radio Unit Os·
cillators, connection
is
via patch cord
with two-terminal socket on one end and
telephone plug on other end.
OUTPUT
Recessed
Center conductor connects to output
RECTIFIER
Type 874 rectifier, shield connects to output-rec·
Coaxial tifier ground.
Connector
BLANKING Telephone- Connection for an external contactor to
tip
jacks blank or cut off oscillator output. Used
(two) in
sweep applications to eliminate re-
turn trace and provide a zero reference
base line on sweep display.
GATE
Phone jack Modulation-gate output for use with syn-
chronous demodulator system.
Three·termi-
Connection for ac power, through de·
nal plug.
tachable line cord.
1.2.3
METER. The OUTPUT VOLTAGE meter indicates theoutput volt-
age, and
is
the means of checking the regulating action of the power sup-
ply. The meter
is
an internal de vacuum-tube voltmeter, calibrated
in
volts of rf output. The quasilogarithmic scale covers a range from 0 to
2 volts. An internal calibration
circuit
permits the meter to be standard-
ized with a particular output rectifier. By means of a panel selector
switch, calibration and zero adjustments (thumb-set controls; refer to
paragraph 1.2.1) can be made quickly without disturbing connections to
the oscillator.
1.2.4
FUSES. Line fuses are accessible from the left-hand side of the
instrument. Slow-blow 0.8-ampere fuses are used for 115-volt operation,
and slow-blow 0.4-ampere fuses are used for 230-volt operation.
3