RV-M5-X - Raveon Technologies

17. Use with External Radio
The model RV-M5-X is an OEM version of the FireLine modem which does not
contain an internal radio. On the rear panel of the RV-M5-X is a 15 pin D-sub
female connector, intended for connection to an external radio. The following
table describes the functions of the various pins.
Front view of 15 D female connector
Pin
Number Function
Ground
1
8V DC Out
2
3
4
5
TX ON
RX ON
Radio ON.
6
TX Mod
7
8
9
10
11
No Connect
No Connect
No Connect
No Connect
Keyline
12
RSSI In
13
RX Audio
14
Mod Adjust
15
DC In/Out
Company Confidential
Notes
Ground connection
8V DC output. 2A max at 10% duty, 1A max at 25% duty,
250mA max continuous.
Active high. 0V when off or in RX mode. 5V in TX mode.
Active high. 0V when off or in TX mode. 5V in RX mode.
Active high. 0V when external radio should be off. 5V when
external radio should be on.
Wide-band modulation to the transmitter. Must be DC coupled,
flat 0-4800Hz frequency response. 1V p-p nominal for full
deviation.
In RX mode, this is and open-drain circuit. In TX mode, it is
pulled to ground with approximately a 10 ohm impedance.
Optional signal. Analog RSSI from external radio to the FireLine
modem. Unused in most applications. May be use dto signal
BUSY Channel to the modem. High-busy, low=not busy.
Wide-band receive audio input. Must be DC coupled to the
radio FM discriminator. Flat response from 0 to 4800Hz.
DC voltage to adjust external modulation balance. Unused in
most applications.
9-16VDC. Directly connected to the DC input jack of the
FireLine.
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Raveon Technologies Corp.