User's Manual
Table Of Contents
- Installation
- Overview AS4000
- Overview AS4020
- Preparation
- Rack Installation
- AS4000 AC Rack Cabling and Wiring
- AS4000 CT Shelf Cabling and Wiring
- _
- Expansion Rack Cabling
- Setup and Test
- System Testing
- AS4000 AC Setup and Test
- Access Concentrator: Turn-Up and DC measurements
- Setting Up the Access Concentrator
- _
- Setting the TEI and Baud Rate for Netspan Connection
- Creating AC Shelf/Rack on Sitespan
- Setting up AC Rack and Shelf configuration
- Configure AC Cards
- Configure AC Shelf properties
- Check Boot Sequence
- Alarm and Status Indications (Test 3)
- Self Test (Test 4)
- Test CTU cabling to the DDF E1 Cards
- Test CTU cabling to the Distribution Frame (DDF) GR303 Cards.
- Test XTU cabling to the DDF
- Connecting the AC to the Network
- Connect E1s/T1s to the Switch or Cross-Connect at the DDF
- Access Concentrator Rack Commissioning Test Results
- AS4000 CT Setup and Test
- AS4020 CT Setup and Test
- _
- General
- Repair and Return Procedure
- Repair Charges
- Return & Repair Tag
- Packing and Shipment
- Glossary
- Index
Printed Documentation
138
3. Calculate/determine total path loss and required DACU output power and hence
power meter reading.
4. Connect cables and equipment as per diagram below using 30+30+20dB calibrated
attenuators. If coupler calibration known set up as in step 9 and go to step 6
5. Zero power meter. Calibrate and apply measurement offset for operational frequency
if applicable.
6. On the AS4020 go to Top Menu >Setup Menu >RF Menu>RX Sensitivity. Set RX to
2500
7. Put AS4020 Shelf into test mode Off and then into test mode 3. (from AS4020 menu
select Setup Menu/RF Menu/RF Commissioning)
8. Configure the DACU using AS7020STMON according to modem shelf properties to
the correct frequency, PN code and ID number prior to entering test mode. If the
frequency can be entered using STMON then the FP command in the step 12 is not
necessary). If coupler calibration known go to step 11. The commissioning procedure
described in this document is not restricted to any particular RF channel or PN code.
However the user should make sure that both the CT and ST are programmed with
identical RF channel and PN code.
9. Using the values of the calibrated attenuators and cable calculate the loss of the
attenuators and cable between the DACU and CT as per diagram above: Note the
power meter reading.
10. Replace the calibrated attenuators with the coupler and note the power meter
reading. If the power meter is more than the previous one then the difference should
be added to the sum of the attenuator values and of less it is subtracted from the sum
of the attenuator values. This new value represents the attenuation of the coupler.
Attach a label with loss value to the coupler.
a Sum of calibrated attenuator losses
b Power meter reading with calibrated