12/5/07
888-2621-001
1-9
WARNING: Disconnect primary power prior to servicing.
Section I Operator Guide
Z3-48HD+
1.3.2
Control Functions
Three momentary push-button switches allow system ON and OFF control functions to
be exercised from the front of the System Controllers. These pushbuttons are: OFF, ON
HI, and ON LOW. Depressing one of these three pushbutton switches will
simultaneously command both transmitters controlled by that System Controller into
the selected ON mode, or will return both transmitters controlled by that System
Controller to the OFF mode simultaneously.
Three LEDs indicate actual transmitter status, LOW, HI and OFF. The indicators are
controlled by the transmitter status outputs of both transmitters controlled by that
System Controller.
NOTE:
In order for these System Controller commands to be accepted by the individual
transmitter control units, the REMOTE/DISABLE switches on each individual
transmitter MUST be in the REMOTE position; or red LED off.
1.3.3
Status Indicators
The System Controllers each incorporate four LED status indicators to provide
important information about the operation conditions of the combined transmitter
system controlled by that System Controller. These indicators are RF POWER, SWR,
EXT INTERLOCK, and REJ LOAD.
The RF POWER indicator illuminates red if the system is in operation and the forward
output power level at the combiner output drops below a preset level, usually 90%. The
indicator will extinguish if the level rises above the preset level or the system is turned
off.
The SWR FAULT LED indicator will illuminate if the reflected RF power level at the
combiner output rises above a preset level, 1.3:1. If this level has been exceeded, the
LED will illuminate. The System Controller takes no action but the transmitters
themselves will either foldback or turn off depending on the level of VSWR. The
indicator will extinguish with the next System Controller ON command.
The EXT INTLK LED indicator will illuminate if the connection between J1-6 and J1-
25 is broken. System operation, controlled by that System Controller, will automatically
be terminated and returned to the OFF state. Once the connection between J1-6 and J1-
25 is restored, an ON command is required to restore operation. These connections are
routed through the Reject Load interlock terminals. The 5kW load interlock is
connected to the ZD32 System Controller. The 10kW load interlock is connected to the
Z3-48 System Controller.
Summary of Contents for Z3-48HD+
Page 4: ...MRH 2 888 2621 001 12 5 07 WARNING Disconnect primary power prior to servicing ...
Page 6: ...12 5 07 888 2621 001 MRH 1 WARNING Disconnect primary power prior to servicing ...
Page 7: ...12 5 07 888 2621 001 vii WARNING Disconnect primary power prior to servicing ...
Page 9: ...12 5 07 888 2621 001 ix WARNING Disconnect primary power prior to servicing ...
Page 12: ...2 888 2508 001 WARNING Disconnect primary power prior to servicing Table of Contents ...
