TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TFM-30 Installation & Operating Instructions
TiL 98RE244 Rev n/c Issue 9
3-9
3.9
INTERNAL PROGRAMMING AND GUARD ENABLE/DISABLE JUMPER
The programming and direct frequency entry modes can be disabled by removing the
internal enable/disable jumper strap from pins 2 and 3 of J15. Removal of this jumper will
prevent operation on any frequencies other than those programmed in the 120 memory
positions and two guard receiver memory positions. Removal of the guard receiver
programming enable/disable jumper strap from pins 1 and 2 of J15 will totally disable the
operator’s ability to re-program the 2 guard receiver channels.
The transceiver is always shipped with the two jumpers in the entry enable positions. To
place either of the jumpers in the disable position:
1.
Remove and retain the seven #4-40 screws securing the bottom cover of the
transceiver to its chassis.
2.
Remove and retain the four #4-40 screws securing the guard receiver PCB module in
the chassis tray. Remove the guard receiver module from the chassis tray.
3.
Remove and retain the five screws securing the chassis tray to the main chassis.
Remove the chassis tray.
4.
You should now have access to the Microprocessor Control Unit (MCU) PCB Module
(See FIGURE 3-4). Remove the enable/disable jumper from pins 3 and 4 or pins 1
and 2 of J15, as desired.
5.
Reverse steps 1 through 3 and secure all screws to re-assemble the transceiver.
Microprocessor Control Unit (MCU) PCB Module
FIGURE 3.4
Internal Enable/Disable Jumper and Transmit High/Low Power Adjust Locations
Notes:
R23 is High Power Adjustment
R24 is Low Power Adjustment
Jumper J15 between pins 3 and 4 for
Entry Enable
Remove for Entry Disable
