User's Manual

Chapter 3 - Operation and Administration Using the CLI NPU Configuration
4Motion 383 System Manual
To configure the PIU hardware version, run the following command:
npu(config)# PIU <slot id (1-2)> hw_version <version (5-6)>
3.3.15.2 Configuring the GPS
The GPS is used to synchronize the air link frames of Intra-site and Inter-site
located sectors to ensure that in all sectors the air frame will start at the same
time, and that all sectors will switch from transmit (downlink) to receive (uplink)
at the same time. This synchronization is necessary to prevent Intra-site and
Inter-site sectors interference. In addition, the GPS synchronizes frame numbers
that are transmitted by the AU.
Command
Syntax
npu(config)# PIU <slot id (1-2)> hw_version <version (5-6)>
Privilege
Level
10
Syntax
Description
Parameter Description Presence Default
Value
Possible
Values
<slot id
(1-2)>
Indicates the PIU slot ID for
which the hardware version is
to be configured.
Mandatory N/A 1-2
hw_version
<version
(5-6)>
Indicates the hardware
version to be configured for
the PIU slot.
5 indicates a PIU that can
support up to 58A.
6 indicates a PIU that can
support up to 35A.
Mandatory N/A
 5 (58A)
 6 (35A)
Command
Modes
Global configuration mode
IMPORTANT
Implementation of GPS synchronization is based on the assumption that all sectors are operating with
the same frame size and with the same DL/UL ratio.