Gnss Module (A900-Cm-Gnss); Gnss Module Rf Input Requirements - Cisco ASR 903 Hardware Installation Manual

GNSS Module (A900-CM-GNSS)

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For more information about installing the RSP, see
the RSP LEDs, see
GNSS Module (A900-CM-GNSS)
The GNSS module is present on the RSP3 modules. It is a pluggable module that allows direct interface with
the external antenna.
Note Using a single GPS antenna input for both RSPs requires usage of external splitters.
To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord. Statement 1023
Warning
Note The GNSS module is not hot swappable.

GNSS Module RF Input Requirements

• The GNSS module requires an active GPS/GNSS antenna with built-in Low-Noise Amplifier (LNA)
The Amplification required is 22dB gain + cable/connector loss + Splitter signal loss.
The recommended range of LNA gain (LNA gain minus all cable and connector losses) at the connector of
the receiver module is 22dB to 30dB with a minimum of 20dB and a maximum of 35dB.
• GNSS module provides 5V to the active antenna through the same RF input.
• Surge requirement:
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
26
RSP LEDs.
for optimal performance. The antenna LNA amplifies the received satellite signals for two purposes:
◦ Compensation of losses on the cable
◦ Lifting the signal amplitude in the suitable range for the receiver frontend
Interface
10 MHz input timing port
10 MHz output timing port
Time of Day (ToD) timing port
BITS timing port
Ethernet management port
Installing an RSP Module. For more information about
Cisco ASR 903 Router Overview