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ManualsBrandsADC Telecommunications ManualsElectronicsDigivance 1900 MHz 20 Watt System
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 4: Operation
Page 4-7
© 2003, ADC Telecommunications, Inc.
Figure 4-4. Select Control Program File Window
3. Check the software version numbers shown in the Software Info section of the Prg Load
display against the version numbers of the software files displayed in the Select Control
Program File window. If files in the Select Control Program File window are a later
version than those shown in the Prg Load display, proceed with the software download. If
the version numbers shown in the Software Info section are the same as the version
numbers of the files in the Select Control Program File window, the software download
is not required.
4. Select the required file to download and click on the OK button.
5. Click on the HOST Load button (see Figure 4-3) to start the download.
6. Repeat steps 2 through 4 for the REMOTE.
2.3 Determine Forward Path Input Signal Level
The level of the composite RF input signal at the FORWARD RF IN port at the HU will vary
depending on the type of BTS, the cable loss, the number of channels present, and the required
forward path composite power. If maximum composite RF output is required, the signal level of
the composite forward path RF signal at the HU forward path input must be adjusted to fall
within a range of –9 to –40 dBm. If the signal level is not within this range, it must be adjusted
to fall within this range through the use of an external attenuator capable of handling the BTS
forward path output power.
If using the Conditioning Panel or Duplexing Panel, refer to the Digivance 800 and 1900 MHz
Interface Panels User Manual (ADCP-75-147) for the procedures for measuring and adjusting
the input RF signal level at the HU. If connecting a single HU to a single BTS, use the following
procedure to measure and adjust the input RF signal level at the HU:
1. Connect a spectrum analyzer or power meter to the forward path output port of the BTS.
The required signal levels and test points are shown in Figure 4-5.
Note: Check the input rating of the test equipment and the output rating of the BTS. To
avoid burning out the spectrum analyzer or power meter, it may be necessary to insert a
30 dB 100W (or similar) attenuator between the BTS and test equipment.
FCC ID: F8I-DLC1902A

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