Raytheon Pathfinder 1200 Instruction Manual page 78

The operating point of the magnetron is at a voltage of -3.6 kV and a current
of 3A. In normal operation, magnetron current can be checked with the volt meter
connected to TB 10 I-MO and ground. The typical reading in long pulse is 12 Vde.
3) Diode Limiter
AI02 is the Passive Diode Limiter fitted between the circulator and mixer as-
sembly. It serves as a barrier to protect the mixer diodes from high amplitude r. f.
energy. Irrespective of whether or not the radar is energized.
Anode Voltage of
the SCR (CD3)
600 V
_t
6-12
Primary Voltage of
Jf±v
r
the Pulse-Trans
(T201-2)
Modulator Trigger at
~~
~
TB10l-TI
FIG. 6-4 TIME TABLE OF THE TRANSMITTER