User manual

efgis.com
11
Operation Manual
4. Setup
CAUTION!
Any changes to the setup of the DSG1 carriers must also be made to the DRV3
receivers deployed on the eld. Using different parameters will prevent the
leakage detection from working as intended.
The table below details parameters that can be set:
Band Parameter Values
Mid
Frequency From 118 to 140 MHz
Mode 1: AM 3-110 Hz
Output Level From 10 to 50 dBmV
LTE
Frequency From 572 to 960 MHz
Mode 1: AM 3-110 Hz
Output Level From 10 to 50 dBmV
Both Transmit carriers 1:Yes 2:No
NOTE
When changing the frequencies on the DSG1 and DRV3, make sure that
you use the appropriate antenna on the DRV3 units to match the selected
frequencies.
4.1 Determining Frequencies and Output Levels
To avoid interference, the frequency of both carriers, Mid and LTE bands, must be set to t
between the adjacent QAMs. Hence, the frequency of DSG1’s carriers is set right on the
center of the gap between the adjacent QAMs.
The recommended output level is from 20 to 30 dB below the adjacent QAM level. Higher
levels will increase leakage detection efciency, but might cause MER degradation to adja-
cent QAMs. The reference level of the QAM must be measured on the whole QAM channel
bandwidth (6 MHz).