User Manual

AS4000 DA CT Commissioning Unit
Operators Manual
DLP 001
605-0000-455
Issue 2.0 Date 21/03/00
Page 19 of 28
2. Power Cycle the Rack
The rack should be power cycled.
3. Check DACU Calibration
Each DACU is provided with a calibration table on the cover unit a typical table is
shown below. The path loss is equal to the sum of the unit losses and external losses.
Cable
Loss dB
Coupler
Loss
Unit loss RX
sensitivity
Power meter
Reading
1 80 17 -98 -3.68
2 80 17 -99 -2.68
3 80 17 -100 -1.68
4 80 17 -101 -0.68
5 80 17 -102 +0.32
Table 1. DACU Calibration Table
4. Set Rx Sensitivity
1. Type:Acc> TE 0
Acc> WU C 1 4000d 0 0 0 (where 4000d indicates version 4.13)
Acc> WU F A
2. Program the DACU via the LAT port to the correct frequency, PN code and ID
number.
3. Set RW.
WU I 1 1 1 1
WU W
WU I <stid> <pn> 0 1
Where <Stid> is in HEX, 17 dec = 11 hex, and pn is 1 in most cases.
4. Write data into ST:
- WU W
5. Once the DACU has booted-up, put it into test mode by typing: TE 0.
6. Note: A configured DACU cannot maintain its uplink without being registered by the
management system. The DACU becomes registered when its ESN is entered into the
management system database. A registered ST can acquire the uplink and maintain
periodic information exchange with the shelf’s SC.
The ‘LK’ command forces the DACU to acquire a link as follows:
RW
Code
PN
Code
Up Link
Rate *
Down Link
Rate*
Overlay
code
Frequency channel number
within channel plan
LK 8 1 4 4 0 9