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CPAT FLEX (DRV3 Lite)
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User Manual
Lastly, to store the settings in the DRV3 Lite, use the “Write” icon.
NOTE 1
The “DRV3 Lite firmware management’’ section, located at the bottom of the
interface, provides information on the firmware version used by the DRV3 Lite
unit.
NOTE 2
The Application allows configuring settings for the “system mode” only. The
‘‘pressure test’’ mode is factory set and cannot be modified since it needs to
match the DSG1 Lite fixed operating parameters.
NOTE 3
When pushed, the recycle button will refresh the RF readings.
3.4 DRV3 Lite’s Parameters
This section details each configuration parameter.
3.4.1 Backlight
This section describes the backlight functionality:
• OFF: Backlight is always OFF.
• 10s: Backlight will turn ON if the main button is pressed, and then will turn OFF
after 10 seconds.
• 30s: Backlight will turn ON if the main button is pressed, and then will turn OFF
after 30 seconds.
• 60s: Backlight will turn ON if the main button is pressed, and then will turn OFF
after 1 minute.
• ON: Backlight is always ON.
3.4.2 Contrast
This parameter controls the screen contrast on the DRV3 Lite’s display. Contrast values
varies from 0 (least contrast) to 9 (highest contrast). The default value is set at 5.
3.4.3 Mid-Band Parameters
These parameters define how the DRV3 Lite detects leakage in the Mid band. In most
cases, they must match those of the DSG1 signal generator located at the headend. There
are four parameters, which can be set using the up/down arrow, or directly entered into
corresponding field:
• Mid : Clicking the Mid icon allows you to toggle to ON/OFF the Mid measurement.
• Frequency: From 118-140 MHz.
• Leak threshold: Minimum leakage detection level in uV/m, from 1 to 200 µV/m.
Default value is set at 20 µV/m. When a leak is detected, a sound will be generated
from the speaker, if the function is enabled.
• QAM offset: Relative level in dB of the generated DSG1 signal at the HE location
compared to the adjacent QAM level. Offset is calculated using the QAM_Level
Generated_level. As an example, if the DSG1 signal is set at -25dBc from the
adjacent QAM level measured in a 6 MHz bandwidth, the DRV3 Lite QAM offset
DRV3 Lite readings in PT (Pressure Test) mode