UAS 7002 NIU
3-11
GDC 087R706-000-02
Table 3-2
System
Configuration Option Settings
You should not change the System Configuration of a UAS 7002 NIU while the unit is in service.
If you are changing the configuration of an active unit, take it out of service first and return it to
service after the changes are made. The procedure for changing the unit’s service state appears
on the following page under the heading Current Service State.
The System Configuration procedure involves the following steps:
1.
From the Configuration menu, select the System Configuration screen by typing
3
and
pressing the Enter key.
2.
Type the selection number of the option you intend to change and press the Enter key.
Highlighting appears on the current setting field for the corresponding option.
3.
Use the arrow keys to toggle the highlighted field through its potential settings.
Option
Potential Settings
[0] Return to Main Menu
Returns you to the UAS 7002 Main Menu.
[1] Shelf Timing Generator:
None – the unit does not provide timing to the backplane under any
circumstances; must be configured for Transmit Timing Source - Sys-
tem, Fallback Timing Source - Internal in its Unit Configuration
Primary – the unit normally provides 4 MHz timing, 8 kbps timing,
and Frame Sync to the backplane; must be configured for Transmit
Timing Source - Recovered, Fallback Timing Source - System in its
Unit Configuration
Secondary – if the Primary Shelf Timing Generator fails, this unit pro-
vides timing to the backplane; must be configured for Transmit Tim-
ing Source - System, Fallback Timing Source - Recovered in its Unit
Configuration
[2] Highway assignment
Not Assigned (Default)
Selects the Backplane Data
Highway on which the
UAS 7002 NIU exchanges
data with its DIUs
Highway 1
Highway 2
Highway 3
Highway 4
Timing Generator Status
:
None – displayed when the unit is not providing either of the back-
plane timing signals
Read-only display field,
indicating what timing
signal(s) - if any - the unit is
providing to the backplane
Source 8 kbps – displayed when the unit, configured to be Secondary
Shelf Timing Generator, is providing 8 kbps timing to the backplane
while the Primary continues to supply 4 MHz
Source 4 MHz – displayed when the unit, configured to be Primary
Shelf Timing Generator, is providing 4 MHz timing to the backplane
but cannot supply 8 kbps
Source 8 kbps & 4 MHz – displayed while the unit provides both 8
kbps and 4 MHz timing to the backplane as either Primary or Second-
ary Shelf Timing Generator
[CR]Return to Previous Menu:
Returns you to the UAS 7002 Configuration menu screen
[S] Save
Saves your selection.
