Technical data

1.2.4 S
ERIAL MAINTENANCE INTERFACE
The serial asynchronous interface allows connection to external se-
rial devices. All commonly supported baud rates, parity and bit con-
figurations are available up to 115.2 kbps. This interface is a simple
3-wire with RS-232C signal levels. The serial interface is protected
against static discharge (15 kV) and shorts with power and signal
circuits.
1.2.5 L
INK ALARM/STATUS INDICATORS
External LED's are used for Link and Line status indication:
1.2.6 P
OWER INTERFACE
The power interface allows connection to an unregulated DC power
source. The DC power source (third-party or user supplied) must
provide a minimum of 11.0 Watts of DC power between 9 and
24VDC. The power interface is protected against reverse polarity
connection, as well as protected against high-voltage transients.
TTL_OUT1:
TTL_IN1 (received from remote unit)
TTL_IN1 and TTL_IN2 (received from remote unit)
TTL_IN1 or TTL_IN2 (received from remote unit)
TTL_OUT2: TTL_IN2 (received from remote unit)
BER >10
–3
or SYNC Loss
BER >10
–4
or SYNC Loss
SYNC Loss
Table 1-4: TTL Output Lines
Pos’n
Led
Name
Color
Description
1 Power Green Active if Power connected to modem
2 Link Red Active whenever a signal with a level exceeding
the level required for reception exists on the
radio channel (min. light on 200ms).
3 Rx/Tx Green Active if modem receives or transmits Data
over serial interface (min. light on 200ms)
4 Alarm Red Alarm indicator
Table 1-5: External LEDs
Page 1-7
AlphaWave Users Manual 3/21/2005
Chapter 1