3.4.3. Serial Port (DCE Female)
Illustration
Position
Product marking
Direction
Description
5
1
9
6
1
DCD
Out
Data Carrier Detect
2
RxD
Out
Recieve Data
3
TxD
In
Transmit Data
4
DTR
In
Data Terminal Ready
5
SG
-
Signal Ground
6
DSR
Out
Data Set Ready
7
RTS
In
Request to Send
8
CTS
Out
Clear to Send
9
RJ
Out
Ring Indicator
Table 6. Serial Port
3.5. LED Indicators
LED
Status
Description
STS
Status
RED
No wireless network has been detected
RED FLASH
A wireless network has been detected
GREEN
Power up self test OK/no issues
NET
NET 1
NET 2
Network
indicator
OFF
Not ready
RED
RF circuitry initialising or network registration fault
GREEN/RED
Network connection fault
GREEN FLASH
Searching for network
GREEN
Locked to network
GREEN 1 BLINK
Signal strength indication:
1 - Very poor
2 - Normal
3 - Very good
GREEN 2
BLINKS
GREEN 3
BLINKS
GREEN 4
BLINKS
GREEN 5
BLINKS
GREEN 6
BLINKS
Table 7. LED indicators
MRD-415 and MRD-455
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