Operating Instructions; Operating Instructions And Navigation - Promax -12 User Manual

3 OPERATING INSTRUCTIONS

3.1

Operating instructions and Navigation

Operating Modes
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The PROMAX-
It changes between frequency tuning and channel tuning. The
operating mode measures the video carrier level, the Carrier/Noise
ratio (C/N), the Video/Audio ratio (V/A) and activates audio carrier
demodulation
measures the channel power and the Carrier/Noise ratio (C/N), the
Bit Error rate (BER) and the Modulation Error ratio (MER) and
represent the Constellation Diagram. It also permits to measure the
CSO and CTB intermodulation distortion.
The LOGGER operating mode enables multiple measurements to be
performed and memorised for subsequent checking and transfer to PC.
It can perform and store up to 55 loggers in the memory. Each logger
carries out level, C/N, V/A, channel power or MER measurements on
the channels activated in the channel plan (up to a maximum of
140 channels).
The SCAN operating mode shows the signal level of all channels
present on the chosen frequency band in a bar-graph display. The span
and the reference level may be selected through the rotary selector. In
addition, a moving marker shows the numeric level of any specific
channel. This mode also allows the user to define the pilot channels,
used for the TILT measurement (only in the forward band).
The SPECTRUM ANALYSER mode provides a spectrum analysis over
the entire band in two parts: return path or sub-band (5 to 80 MHz)
and forward band (5 to 1005 MHz). The span is user definable. In
addition, it is possible to change the reference level, and maximum
and minimum levels may be detected and held for INGRESS
measurements.
3-8
has the following independent operating modes:
12
for analogue channels. For digital channels, it
January 2015