User Manual

AS4000 Central Terminal

Installation and Commissioning

DLP 010

605-0000-452

Issue 1.3dr Date 7/02/00

Page 4 of 6

1.5. Connect LAT Terminal

Connect LAT terminal to the terminal Port on the DACU

1 1

Shelf 4 Shelf 1

Shelf 3 Shelf 2

Terminal

OKFRU Fail

2. Forcing the DA Commissioning Unit to acquire a link

1. Ensure that the DTU has been set as in DLP-009 step 5.

2. The ‘LK’ command forces the DACU to acquire a link as follows:

Code

Up Link

Rate *

Down Link

Rate*

Overlay

code

Frequency channel number

within channel plan

LK 8 1 4 4 0 9

* The rate at which the link will acquire is defined as follows:

1: 10kbit/s

2 40kbit/s

3 80kbit/s

4: 160kbit/s

3. With the LAT connected to the DACU, ensure that it has booted-up, type:

TE 0 Puts DACU into test mode

W 426 Watch the link state

LK F 1 1 1 0 9 Acquire a downlink on TLAC (in this example RW 15, at 10kbit/s

channel 9)

LK 8 1 4 4 0 9 Acquire a downlink and uplink on TTC (in this example RW 8 at

160kbit/s channel 9

4. During these commands, the link status ‘watch’ should return the states as described in

paragraph 2. The final state should be ‘0B0B’

5. The DACU now acquires, if the DACU fails to acquire it is faulty.

6. Measure and record output power.

3. Rx Sensitivity

1. Program the DACU to the correct frequency, PN code and ID number