Guardian Manual 001-5006-000 Rev 0
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P a g e
Table 1-1 – Guardian LED Functionality
LED
Color
Definition
Power Green
Amber (Solid or Blinking)
Red
Guardian ready, normal operations
Guardian is Programming
Guardian hardware fault
Status Green
Red
Amber (Solid or Blinking)
Guardian no faults, normal operations
Guardian has a fault condition, check unit status
Guardian detects high background noise
Rx
Green
Off
Receiving data
Tx
Red
Blinking Amber
Off
Transmitting data
The unit wants to transmit, but is inhibited.
RD/TD Green
Red
Receive data is being sent out of the port
Transmit data is being received by the port
1.4.3
USER INTERFACE PORT
The user interface port is an 8 pin block receptacle, programmable to work with 1.8V to 5V levels.
Table 1-2
shows
pin-out descriptions for the User port.
Table 1-2 – Pin-Out for User Connector
Contact
Signal Name
1
Tx Audio In
OR
RS-485/422 RxB/RxD+ (input)
(1,2)
2
Rx Audio Out
OR
RS-485/422 TxB/TxD+ (output)
(1,2)
3
PTT
OR
RS-485/422 RxA/RxD- (input)
(1,3)
4
RSSI Out
OR
RS-485/422 TxA/TxD- (output)
(1,3)
5
Ground
6
Configuration Select 1 (internally pulled high)
7
Configuration Select 3 (internally pulled high)
8
Configuration Select 2 (internally pulled high)
(1)
When RS-422 or RS-485 is configured.
(2)
For Half-Duplex (2 wire) connections, connect pin 1 (RxB/RxD+) to pin 2 (TxB/TxD+) and
pin 3 (RxA/RxD-) to pin 4 (TxA/TxD-).