SYNC at J3 (figure 1-9, item 13).
The LASER PULSE jack J2 (figure
1-9, item 12) is the receiving PIN diode output monitor and is used
during the LR transmitter test.
The adapter cable assembly (ACA)(figure 1-9, item 4) is used to
connect DC power to the LR while testing, and provides an electro-
Ground terminal E11
(figure 1-9, item 11) provides for a unit ground connection.
The LR Tester requires a 115 VAC power source.
External power is
supplied through the AC power cable assembly (figure 1-9, item 2) to
the PWR jack J1 (figure 1-9, item 26). Power is applied through the
the PWR ON indicator DS1 (figure 1-9, item 25).
The 115 VAC is
applied across the primary of T1 (figure 1-11, item 6) through line
filters FL1 and FL2 (figure 1-9, items 11 and 12). The secondary of
T1 provides 115 VAC and 12.6 VAC to the power supply board assembly
A3 (figure 1-11, item 24).
contained within, one for the receiver and one for the transmitter:
Receiver Power Supply - The receiver power supply receives the
12.6 VAC, and through a bridge rectifier and a series
regulator, provides a regulated +5 VDC to the voltage divider
The voltage divider allows for fine adjustment of
Transmitter Power Supply - The transmitter power supply
a voltage divider circuit.
This voltage divider allows the
output voltage to be set between +66 and +100 VDC for fine
adjustment of the transmitter output power.
The transmitter/receiver assembly A1 (figure 1-11, item 9) is made up
of an optics housing assembly, an oven assembly, and a Xmt/Rcv board