User's Manual

DIB-500 R4.1 Configuration
Adjusting a cavity coupler – optional (cavity variant only)
144 Installation, Operation and Service Manual 90DIB500R41IM_FCC02 – 99.1
6.2.1 Tools and aids
Table 6.12 provides an overview of tools and aids that are required for adjusting a cavity
coupler.
6.2.2 Setting the output rating
To adjust the cavity coupler to a new Tx frequency, a sufficiently high output power must
be set so that changes at the handwheel of the cavity coupler are detectable at the
measuring device.
Proceed as follows to set the output power to a standard value:
Preparation:
✓ The tools and aids must be available, refer to section 6.2.1 on page 144.
✓ The current transmission power and frequency must be known.
✓ The On/Off switches must be set to switch position "On" (switch position: up), see
Figure 3.15 on page 43.
✓ The service computer must be connected via Ethernet cable, see section 6.1.2.1
on page 133.
✓ The service computer must have been started.
Carry out the following steps:
1. Call up the command prompts via the Windows menu Start > Run.
2. Enter the command cmd .
➥ The command prompt window opens.
3. Initiate a TELNET session to the BSC command shell by entering the command
telnet 10.xxx.xxx.XX 5100 to query the frequency of all active carriers.
xxx corresponds to the IP address of the BSC (PUC) depending on the site, refer to
the project-specific documents.
XX corresponds to the IP address of the PowerPC of the corresponding TIB.
4. After the command prompt, enter u S3 to change to user level 3.
5. Enter the command p 1 -A sbue sbcc 02 0x to check the configured output
power of the corresponding carrier;
x corresponds to carrier no.
➥ The power of the corresponding carrier is displayed in mW:
Table 6.12 Overview of tools and aids (Adjusting a cavity coupler – optional (cavity variant only))
Work step Tools, aids
Setting a cavity coupler
to the TX frequency
| A service computer that is configured accordingly
1)
| Straight through ethernet cable
| VSWR measuring instrument, recommended:
– R&S NRT measuring device and the appropriate adapter
– NRT-Z44 measuring head and the appropriate adapter
| RF connecting cable for connection with the VSWR measuring
instrument
| Dummy load (50 Ω)
| Screwdriver/wrench to loosen the fastening screw of the cavity
coupler (for frequencies ≥ 800 MHz)
1) see the "Service computers for ACCESSNET
®
-T IP" configuration manual