Glenayre Electronics Inc. GL-T8600-CN Manual Do Utilizador
Glenayre Document Number: 9110.00172
DSP Exciter
Issue 1, Rev. I: 01/15/97
OPTIONS
Print Date: 02/19/97
Copyright © 1997 Glenayre
Page: 10-1
dsps
ec10
10 OPTIONS
10.1 Exciter/PA Control with QT-1000 Interface
The controller interface is the portion of exciter circuitry that connects the transmitter
controller to the exciter. The controller interface dictates what kind of transmitter controller
may operate the transmitter. The transmitter can be operated through one of several control-
lers depending on the interface circuitry installed with the exciter.
controller to the exciter. The controller interface dictates what kind of transmitter controller
may operate the transmitter. The transmitter can be operated through one of several control-
lers depending on the interface circuitry installed with the exciter.
Two boards form this interface, the internal QT-1000 interface board and the external
interface I/O board.
interface I/O board.
Control commands from the transmitter controller are connected through the interface
circuit. This circuit supplies remote control to the microcontroller unit (MCU) control
circuit. The VT-100 VDT supplies local control. The MCU control circuit generates all
control signals for the other circuits, and monitors their status. The MCU control circuit
reports status back to the VT-100 VDT and the interface circuit, which supplies the status
to the transmitter controller.
circuit. This circuit supplies remote control to the microcontroller unit (MCU) control
circuit. The VT-100 VDT supplies local control. The MCU control circuit generates all
control signals for the other circuits, and monitors their status. The MCU control circuit
reports status back to the VT-100 VDT and the interface circuit, which supplies the status
to the transmitter controller.
10.1.1 Reference Source
The ten-MHz reference signal is provided by the controller via J8 on the exciter/control
board.
board.
10.1.2 Controller Interface Connector Functions
Refer to
Figure 10-1
,
for a pin-by-pin description of signal
functions. The controller interfaces with the transmitter through connectors J1, J2, and J5
and terminal board TB2 at the exciter back panel. J5 on the external I/O board connects to
a standard RL-XX3 receiver, if installed. If a standard receiver is not installed, TB2 on the
external I/O board connects to any generic receiver. TB2 also makes connections to
optional configurable QT-1000 alarm inputs and switching outputs. J1 on the internal
interface board connects directly to TXC connector J1, and interfaces all signals except
alarms. Alarm signals, consisting of transmitter alarm, fault, and status signals, are supplied
directly to the QT-1000 controller connector J2 though J2 on the internal interface board.
and terminal board TB2 at the exciter back panel. J5 on the external I/O board connects to
a standard RL-XX3 receiver, if installed. If a standard receiver is not installed, TB2 on the
external I/O board connects to any generic receiver. TB2 also makes connections to
optional configurable QT-1000 alarm inputs and switching outputs. J1 on the internal
interface board connects directly to TXC connector J1, and interfaces all signals except
alarms. Alarm signals, consisting of transmitter alarm, fault, and status signals, are supplied
directly to the QT-1000 controller connector J2 though J2 on the internal interface board.
10.1.3 QT-1000 Interface Conversion Functions
Many of the signals exchanged between the controller and the exciter originate with a
format, voltage, or requirement incompatible with their destination. The QT-1000 interface
performs any signal conversions necessary to provide compatibility between the controller
and the exciter. The following text describes any signal conversions made by the controller
interface.
format, voltage, or requirement incompatible with their destination. The QT-1000 interface
performs any signal conversions necessary to provide compatibility between the controller
and the exciter. The following text describes any signal conversions made by the controller
interface.