TECHNICAL NOTE – OPERATION OF MT4400 TWTA
08/10/2004
TN4400-3
MCL, INC.
31 of 36
5.0
HPA INITIAL TURN ON
The following procedure should be performed the first time the HPA is turned on after receipt
from MCL or after it has been in storage.
5.1
Initial Turn-On Check List
All MT4400 TWT amplifiers are ready to be activated when the following check list has been
complied with:
1.
The installation procedure found in TN4400-2 – Technical Note, Installation Guide for
MT4400, has been completed.
2.
The HPA Main Power circuit breaker should be in the off position.
3.
The MT4400 is properly mounted in the cabinet, and the cabinet is firmly bolted in place.
4.
Ground strap (earth) attached to safety ground tie point in the system cabinet (lower rear).
5.
Appropriate AC input voltage and frequency has been connected to the MT4400. Check
AC system voltages by measuring the voltage on the mate for J1 (AC input connector).
6.
All waveguide flanges are securely fastened together and input RF coaxial cable is firmly
attached.
7.
All electrical connections double-checked mechanically and electrically. The main AC
power connector should be properly connected to J1 on the MT4400.
8.
Air intake and exhaust is not obstructed.
9.
The input RF drive source (exciter) should be properly connected with its output set to
minimum and off (mute).
10. Connect the Remote Panel and Computer Interface cables to the HPA.
