Option Installation
66
Model 4010 Tone LOTL Daughter Board
The Tone LOTL Daughter Board (P/N 702-9450) is an option board that is installed on the
Dual Channel Board. This option will allow the channel card to monitor the transmitter
line for the guard tone frequency and prevent transmission if the transmitter is busy. This
option is only useful if the transmitter has a parallel device (console or station remote)
controlling it.
Installation
The cover of the Model 4010 must be raised by unscrewing the two thumbscrews on the
back of the unit and lifting the top.
Remove the Dual Channel Card that has the channel that requires the tone LOTL
indication. If the channel number is an odd number, the Tone LOTL Daughter Board is
installed in connector P2 (upper strip connector). If the channel number is even, use
connector P3. The Daughter board comes with two standoffs and mounting screws. First,
remove the screws, and then install the Daughter board into the strip connector. Using the
screws and standoffs, secure the board to the Dual Channel Card. Insert the Dual Channel
Card into the channel slot by placing the side away from the back panel in first, then rock
the card towards the back panel into position. Take care that the LEDs are properly
positioned. Secure the board by inserting the screw through the hole in the back panel into
the bracket on the card.
The LOTL (line operated transmit lamp) signal is used to indicate when a transmission is
occurring and to prevent the Model 4010 from transmitting while the line is busy. This
signal is not useful if there is no parallel device (console or station remote) and should be
disabled with the jumper on the board.
Caution!
Keep the front of the unit on the tabletop; do not let the front
hang over a table edge. The console can easily be knocked off
balance onto the floor when the front hangs off the table.
LOTL
Enabled
Disable
Jumper JP1
A
B
!
Содержание 4010
Страница 1: ...Model 4010 Radio Dispatch Console Installation and Programming 025 9227S ...
Страница 46: ...Console Installation 46 025 9227S ...
Страница 78: ...Option Installation 78 025 9227S ...
Страница 134: ...Appendix D Troubleshooting 134 025 9227S ...