Actions
NCD 901 60/1 GPS Receiver¶
The NCD 901 60/1 is a GPS receiver for clock reference purpose, sold as accessory to the RBS6402 eNodeB.
Major internal parts¶
It consists of the following major parts:- Trimble RES 360 SMT GNSS receiver module
- STM32F105 Cortex-M3 Microcontroller
- MuRata NXE1S0305MC isolated DC/DC conveter for phantom power to GNSS antenna
External interfaces¶
RJ45 conenctor to RBS6402¶
pin-out and signals are yet TBD, but judging from other Ericsson GPS receivers, it is safe to assume 12V supply and RS485 for NMEA.
SMA connector to GNSS antenna¶
The SMA connector features a 5V/1W isolated phantom power DC supply
LED¶
The green LED blinks, when the receiver is powered and goes to constant green when the GPS signal is locked. This could also be checked with issuing:
show ManagedElement=foo,Transport=1,Synchronization=1,RadioEquipmentClock=1,clockState
from the CLI.
When the receiver is locked, the output is:
clockState=LOCKED
while it is
clockState=HOLDOVER
when there is no GPS receiver connected or the device is not locked.
Part Numbers¶
Part Number | Description |
---|---|
NCD 901 60/1 | GPS Receiver Unit (with RJ45 and SMA) |
RPM 5132372/2900 | RBS6402 GPS Cable (RJ45 + proprietary connector) |
TSR 432 151/3000 | DUS GPS Cable (RJ45 to RJ45) |
NTB 801 0070/1 | Kit consisting of three items above |
Updated by steviehs 2 months ago · 4 revisions