Menu Functions - Promax MO-180 Manual De Usuario

USER'S MANUAL MO-180
NOTE: The actual IF frequency value varies between 32 and 36 MHz, depending on
the RF frequency. When a fixed 36 MHz is needed, the RF output of the
modulator has to be disabled in the RF menu.

4.3 Menu functions

After start up, the equipment display shows information regarding the main
operating conditions, as can be seen in the following example:
FREQ: 650000000 Hz ATT: 10 dB
FFT:8K CONST:64QAM BW:8 MHz GUARD:1/4
FREQ: 650000000 Hz ATT: 10 dB
TEST: NONE
Here the RF frequency is 650 MHz, the 1-dB step RF attenuator is set to 10 dB,
the DVB-T/H signal has 8K carriers, occupies 8 MHz and uses a 64 QAM constellation
with a guard interval of 1/4. No test mode is selected (NONE) and the operation mode
of the MO-180 is set to master. Packets of length 204 bytes are currently being
detected on the selected TS input.
After a few seconds, the display changes its contents to show the working time
and error count information, as follows:
MO-180 PROMAX ELECTRONICA, S.A.
Working: 01:13:55 ERR: 0
The text on the upper line (the name of the company, in the example above)
could be customised via the remote control port to the user's needs, allowing for an
easy identification of the equipment or for some piece of advice.
The main display alternates every 5 seconds the previous information with the
following:
TS SPI: 19.432Mbps
Working: 01:14:12 ERR: 0
This represents an averaged estimate of the net bit rate of the selected
transport stream. That is, in slave mode or SFN operation this is directly the raw bit rate
of the input TS as it arrives at the modulator. In master MFN operation, this is the bit
rate of the TS resulting from stripping the input TS off all NULL packets. In the case
that the input contains only NULL packets, the estimated bit rate will be effectively 0
Mbps! The bit rate estimate is expressed in Mbps with three decimal places, i.e. with a
resolution of 1 kbps.
04/2008
TS: Master (204)
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