Pushbuttons and Menu Options
9
TX-SK+ SoftKey Transmitter
Connecting Cables
These instructions describe how to recharge the batteries, and to program the TX-SK+ transmitter.
Recharging the batteries
Use the 12 VDC (800 mA) power supply to recharge the TX-SK+ batteries. Charging is controlled
by an internal microprocessor to prevent overcharging the battery. The DC power supply is wired
with 12 VDC to tip, and GND (-) to sleeve
Programming the unit
There are two types of cables you can purchase to download AXCESS or SKDesign programs to
the TX-SK+. The CC-232 DB-9 (female) connector-to-stereo mini-plug cable connects directly to
your PC's serial port and the TX-SK+. The CC-232 DB-9 (male) connector-to-stereo mini-plug
adapter cable connects to an AMX programming cable and to the TX-SK+. Figure 14 shows the
cable construction and solder-side pinout views.
The following table lists the pinouts for the cables.
FIG. 14
CC-232 TX-SK+ Programming Cable construction and solder-side pinout views
CC-232 DB-9 connectors and stereo mini-plug pinouts
DB-9 (male) connector DB-9 (female) connector
Cable
Stereo mini-plug
Signals
Pins
Signals
Pins
Colors
Pins
GND
5
GND
5
Shield
Sleeve
RXD
3
RXD
2
Red
Tip
TXD
2
TXD
3
Black
Ring
