AValon RF TX600 Series - Manual (Page 9)

AVALON RF, INC. Page 6
TX500 Series User’s Guide & Operating Manual
2.3 Electrical Interface.
The transmitter has the following interfaces:
2.3.1 Power Input
a) The transmitters operate off a 9Vdc-16Vdc unregulated voltage
source.
This input is switched and protected against reverse polarity.
a) Typical power input current consumption for the basic
configuration is (with video present):
Model Input Current
TX518 <200mA
TX523 350mA
TX530 450mA
Table 2 – Current Consumption
‘Video Presence’ detection circuitry will turn off the power amplifier
if no video is detected. This conserves power considerably and
reduces the RF output by more than 30 dB (1000 times less), if no
video is present.
Addition of option 11 (WDL) will increase the current draw by
about 200mA.
2.3.2 Video Input.
a) The video input accepts RS170, CCIR, NTSC or PAL signals.
b) Input voltage is 1Vp.p with a negative sync tip of 0.3V.
c) The input impedance is 75
Ω Ω Ω Ω
(ohm).
2.3.3 Audio 1 and Audio 2 Inputs.
The audio inputs accept signals of 1Vp.p. and have an input
impedance of 600
Ω Ω Ω Ω
(ohm).