Chapter 4_______________________________________Zaxcom Digital Wireless System User’s Manual
46
Powering the STA100/STA150
Connection of 12 VDC power to the stereo adapter is optional. If no power source is connected to the
STA100/STA150, it operates from the transmitter’s internal battery.
Using an External Power Source
When the 12 VDC input is connected to a power source, it supplies power to the transmitter when its power
switch is in the ‘OFF’ position.
If batteries are installed in the transmitter and external power is connected, the unit will not be able to power
down unless an external power switch is available to remove the external power.
Using the STA100/STA150 to Power the Transmitter
The adapter can be used to power the transmitter while it is in Mono mode and using a mic-level input.
The Audio/Timecode Output Connection
The audio output connection is used to monitor the audio functions of its host unit or to allow timecode to pass
through the STA100/STA150. The transmitter’s output setting (
Timecode Output Enable page
) determines if
audio or timecode is sent through the output.
Timecode Input
The timecode input is used to jam the transmitter’s timecode generator. If the auto-load function (
Timecode Jam
Mode page
) is enabled, the timecode input of the stereo adapter can be used.
Operation of the STA100/STA150
For the stereo adapter to operate, the transmitter must select the stereo setting (
Audio Transmission Format
page
) and external ADC (
ADC Location page
) must be selected.
Host Unit functions
Selecting the stereo setting causes the transmitter to combine the two input signals together and transmit them on
one frequency. The ADC selection:
INTERNAL
– selects the internal mic input,
EXTERNAL
– selects the
stereo adapter audio.
Figure 4-2 STA100 attached to TRX900AA
