User's Manual

Page 9
© Copyright 2008 Trio DataCom Pty. Ltd.
O Series Data Radio – User Manual
Other Pins
13
Analogue RSSI
O
Synthesised average of RSSI (20dB/V absolute reference : -90dBm = 1.25v)
[can also be used as a general purpose analogue output]
0-2.5v
24
PTT
I
Keys the radio at maximum TX/RX duty cycle using the current programmed
channel selection and output power (Active Low).
Note that while a radio is in this mode no data can be passed, the RSSI
indication on other units will not respond to the radio being PTT keyed and it
may block other systems.
3.3V TTL
Optional Connections
Port A (aka Port 2)
3
PORT2-CTS
O
Flow control of TxD for Port 2 [Port A on K-Series]
3.3V TTL
4
PORT2-RTS
I
Flow control of TxD for Port 2 [Port A on K-Series]
3.3V TTL
5
PORT2-DTR
I
Flow control of RxD for Port 2 [Port A on K-Series]
3.3V TTL
9
PORT2-DCD
O
Flow control of RxD for Port A
3.3V TTL
Port B (aka Port 1)
31
PORT1-RTS
I
Flow control of TxD for Port 1 [Port B on K-Series]
3.3V TTL
32
PORT1-CTS
O
Flow control of TxD for Port 1 [Port B on K-Series]
3.3V TTL
33
PORT1-DTR
I
Flow control of RxD for Primary Data Port [Port B on K-Series]
3.3V TTL
34
PORT1-DCD
O
Flow control of RxD for Port 1 [Port B on K-Series]
3.3V TTL
Other connections (Optional)
Pin
Name
In/Out
Comment
Level
16
Analogue Input
I
General purpose analogue input. 66k input resistance.
0-6v
23
nFACT/TEST-
MODE
I
Reset factory defaults (Active Low on power-up)
3.3V TTL
25
TxInhibit
I
Tx inhibit for hot standby operation (Active High)
3.3V TTL
26
nSHUTDOWN_IN
I
Power down entire module (Active Low)
3.3V TTL
27
TxSync Input
I
Tx Sync input
3.3V TTL
28
TxSync Output
O
Tx Sync output
3.3V TTL
35
TWD
IO
N/C - Factory Use Only
3.3V TTL
36
TWCK
O
N/C - Factory Use Only
3.3V TTL
37
SUPPLY_MONI-
TOR
I
N/C - Factory Use Only
0-3V,
Hi-Z
38
SHUTDOWN_
OUT
O
N/C - Factory Use Only
3.3V TTL
40
NVRAM-WP
O
N/C - Factory Use Only
3.3V TTL