Clear-Com TW-60 - Manual (Page 13)

T W - 6 0 P U B L I C S A F E T Y R A D I O I N T E R F A C E
2 - 3
Transmit Key Switch: For some two-way radios, a dedicated power path may be
needed to activate the Transmit function. If so, set switch 1 to ON, as shown in
Table 3.
Table 3: Setup Switch Positions
RACK MOUNTING
The unit requires 1.75 inches (44 mm) (1RU) of rack space. It requires no
additional free rack space above or below it for ventilation. The station is 5.25
inches (133 mm) in depth and requires at least 2 1/2 inches clearance in the rear
for connectors and cables. The single-piece front panel has integral "rack ears".
This adds stability and strength. Take care not to over tighten the rack mounting
screws as this can mar the front panel.
CONNECTING THE TW-60
Make the necessary back panel connections to the TW-60:
1. Plug the power cord into the IEC receptacle of the TW-60 and connect the
power cord to an unswitched AC outlet.
2. Connect the two-way radio cables from the DB-9F connectors on the TW-60
to each two-way radio.
3. Using 730239 cables, connect the Channels 1 through 4 Matrix Audio
Connectors of the TW-60 to the appropriate connectors on the Clear-Com
matrix. As can be seen in Table 4, four of these cables are needed for each
TW-60 unit.
4. Using a 730240 or a 730241 cable, connect the GPI cable from the DB-9M
connector on the TW-60 to the DB-25F GPI connector on the Clear-Com
matrix. Use the cable shown in Table 4 for each TW-60 unit. Each cable
serves two units.
SWITCH 1 SWITCH 2 SWITCH 3 FUNCTION
Off Off Mic input range is + 11 dBv to - 20 dBv
Off On Mic input range is - 26 dBv to - 48 dBv
On On Mic input range is - 30 dBv to - 57 dBv
On Provides a dedicated power path to key Transmit
Off Removes power path