User Manual

Central Terminal Level Control Unit
Operators Manual
GSI 002
605-0000-428
Issue 1.2. Date 5/11/98
Page 11 of 14
mode is used during commissioning or maintenance operations only, It is only
possible to have one shelf at a time in continuous mode. Attempts to put a
second shelf in continuous mode are rejected until an option other than
continuous mode is chosen for the first shelf. This menu will also display the
current shelf identifier. If the shelf is left in continuous mode it will revert to
disabled after 1 hour the SC will disable the RW channel. The LCU will then
report Modem Enable error and disable the mode of operation to idle.
Mode SH:2 0E-
1-T
Mode:********** 0--
0--
Possible Modes
Idle
None (shelf not present)
Continuous
Hour
Day
Shelf ID
6.11. Path Loss Menu
This menu is used to set the path loss between the LCU unit and the radio RX
port in the Central Terminal. The current shelf identifiers will also be
displayed in this menu.
Shelf: 3 & 4 1-T
0--
Loss (dB):###.# 0--
0--
6.12. CT RX Trim
This menu allows the user to override the set point. The point can be raised or
lowered keying up and down arrows and keying enter to send the selection.
After a trim up (reduce CT receive power level) or down (increase CT receive
power level) a period of ten to twenty seconds will elapse before the current
level is updated. Once the current level has been updated, repeat the process to
nudge further if required.
Shelf: 4 0--
0--
Level: + 0--
Current: ## 1-R
é and ↵ to increase value (+)
(Reduce CT RX power Level)
ê and ↵ to decrease value (-)
(increase CT RX power Level)
Value between 0 and 255
(typical =90)