Measuring The Video Carrier Level (Level) - Promax PROLINK-4/4C Premium Manual De Instrucciones

Figure 6.- Measuring mode selection (satellite band, analogue channels).
To select a measurement mode turn the rotary selector [4] until it is marked (e.g.,
Level in the previous figure), then press the rotary selector [4] or key
activate the selected measurement mode.

4.9.1.1 Measuring the Video Carrier Level (Level)

If you select the Level measurement mode, the screen shows a window with the
signal level, when selected with the OSD key
If a sudden signal level increase is produced at the RF input, and it is beyond the total
signal levels of:
the tuning circuit may become out of control, giving as a result wrong level
measurements.
If this situation occurs, disconnect the input signal, change to Spectrum Analyser
mode and select a Reference Level of 130 dBµV. Then connect the signal again
and modify the Reference Level according to present signals.
Similar effects can be observed when at the RF input appears an important number of
carriers with a high level. To be able to determinate the equivalent level of a carrier
group (with similar levels) at the RF input, it is possible to use the expression:
Page 32
Terrestrial band:
Satellite band:
USER'S MANUAL. PROLINK-4/4C
[2] (see next section).
95 dBµV
105 dBµV
Premium
[22] to
WARNING
06/2005