User Manual

AMPLIFIER CONTROLLER BOARD REV.5
PUB12-030 Rev. 1 Feb 14, 2013 12-030-16 Amplifier Controller Board Rev.5
TX D-Connector
PC Board Connector
Designation
Description
Remote Controls
Pin 5
J6 Pin 9
RT_FWD
Forward RF power level
Pin 13
J6 Pin 10
RT_RFL
Reflected RF power level
Pin 15
J6 Pin 12
RT_AGC
AGC voltage (1/2 scale)
Pin 7
J6 Pin 13
RT_CUTB
Cutback voltage (1/2
scale)
Pin 12
J6 Pin 8
Ground
Ground Reference
4.3 REMOTE CONTROLS
The Transmitter MODE must be in REMOTE for any of these remote controls to be operational. The transmitter is
placed in the REMOTE mode via the touch LCD menu options. The main LCD screen has a status light to show if
the REMOTE MODE is active.
To place the transmitter into REMOTE MODE, the operator must enter the REMCTL submenu on the LCD and
enable the REMOTE MODE.
The MXi provides 4 remote control inputs that effectively replicate its own front panel mode control buttons. The
VOR (Video Operated Relay) input is not available from the front panel since it is a special type of input that only
makes sense as a remote input.
Figure 3 TX_OFF, RESET, and VOR Remote Controls
The TX_OFF , RESET and VOR remote controls are active low, opto-isolated inputs configured as shown, all of
which require a GROUND for assertion and the activator to be able to sink 15mA or more for at least 200
milliseconds to accomplish reliable keying. Each of these is current-limited by an individual resistor.
Figure 4 TX_ON Remote Control
The TX_ON remote control is an active low input configured to drive a relay coil off +12V supply. It requires a
GROUND for assertion and the activator to be able to sink 100 mA or more for at least 200 milliseconds to
accomplish reliable keying.