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laforge, 07/06/2020 12:10 PM
GPS 02 01¶
This is the Ericsson original GPS receiver that can be used to provide a clock reference to equipment like DUG 20 or DUL 20 or also the SIU 02
It is also called "NCD 901 41/1"
Connections¶
RJ45 for connection to DUL/DUG/DUW/SIU/TCU¶
The unit has two RJ45 sockets. They appear to have identical functionality.
The pin-out is as follows:
| Pin | Name | Comment |
|---|---|---|
| 1 | 1PPS- | RS-422 1PPS GPS -> DUx |
| 2 | 1PPS+ | RS-422 1PPS GPS -> DUx |
| 3 | RxD | RS-422 in direction DUx -> GPS |
| 4 | TxD+ | RS-422 NMEA in direction GPS -> DUx |
| 5 | TxD- | RS-422 NMEA in direction GPS -> DUx |
| 6 | RxD | RS-422 in direction DUx -> GPS |
| 7 | 12V | supply voltage from DUx -> GPS |
| 8 | GND | supply voltage from DUx -> GPS |
The supply voltage pins on a DUL 20 only provide 3.1V until the GPS receiver is detected by means of a 1kOums resistor between 12V and GND. At that point, the DUL sources the full 12V.
SMA for connection to GPS antenna¶
This includes a 5V DC phantom voltage supply for the active antenna.
Updated by laforge almost 4 years ago · 3 revisions
