TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TFM-500 Installation & Operating Instructions
TiL 98RE243 Rev. N/C Issue 12
3-6
3.7.9 Data Input
Data communications equipment requiring direct access to the modulator and discriminator and
be connected via pins 2 and 11. Data cannot be transmitted in CANADA unless equipment is
approved for use with the TFM-500 by the communications regulatory authority.
3.8
INTERNAL PROGRAMMING AND GUARD ENABLE/DISABLE JUMPER
Removing the internal enable/disable jumper strap from pins 1 and 2 of J10 can disable the
programming and direct frequency entry modes. Removal of this jumper will prevent operation on
any frequencies other than those programmed in the 400 memory positions and two guard
receiver memory positions. The removal of the guard receiver programming enable/disable
jumper strap from pins 1 and 2 of J11 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 the left side of the radio.
2. Set or remove jumpers as necessary.
3. Re-assemble the radio in the reverse order.
FIGURE 3.3
Microprocessor Control Unit (MCU) PCB Module:
Internal Enable/Disable Jumper Locations
