Figure 2-12. Temperature Controller; 2A2A1, 2A1A2, 2A1A3, 2A1A4, Schematic Diagram.
second stage channel). The variable attenuators are
2-17. RF Pump Circuits
mounted behind a cover plate on the panel of Module
a. Pump Source Module 2A1 (fig. 2-13).
2A1. The required adjustments can be made when the
(1) The primary subassembly of Module 2A1
cover plate is removed. Each variable attenuator is set
is the klystron oscillator V1. This tube operates with -
during gain-bandwidth alignment. A crossguide coupler
1000 V beam voltage and +6.3 V (with respect to the
(DC1) is inserted between V1 and PD1 so that the output
beam voltage) filament voltage. These voltages are
power of V1 can be sampled. The decoupled power is
generated in 1PS1 and supplied to Module 2A1 through
rectified in crystal detector CR1 and the dc output is
terminals J, K, and H of J1. The output power of V1 is at
supplied to a dc amplifier, Power Monitor A1, where it is
42.00 GHz. The RF power is divided into two channels
amplified sufficiently to operate meter 1M5, PUMP meter
in power divider PD1, one channel for each stage of the
on Unit 1.
parametric amplifier. The RF power control is the
variable attenuator (AT3 in fist stage channel and AT4 in