Specifications

UHP-1000 SATELLITE ROUTER
INSTALLATION AND OPERATION MANUAL, V. 2.5
(SW VERSION 2.5.X)
© ROMANTIS 2012 35 www.romantis.com
ACM-Short mode significantly reduces the latency of data transmission, but has a limitation on the maximum
throughput.
---------- DVB-S2 modulator parameters
s2modulator qpsk 12|35|23|34|45|56|89|910 - QPSK FEC mode
QPSK modulation and FEC selection
s2modulator 8psk 35|23|34|56|89|910 - 8PSK FEC mode
8PSK modulation and FEC selection
s2modulator 16apsk 23|34|45|56|89|910 - 16APSK FEC mode
16APSK modulation and FEC selection
Other commands are unified for S1 and S2.
modulator inversion off|on - Spectrum inversion
Spectrum inversion in transmit mode. If you know that BUC or satellite inverses spectrum, it is worth
to switch inversion on in transmit mode so as to receive non-inverted signal on the other side.
modulator power off|on - Modulator BUC power
BUC 24 V supply voltage control applied to modulator output.
modulator reference off|on - Modulator 10 MHz output
10 MHz reference signal control applied to modulator output.
modulator tx off|on|pure-carrier|balance - Tx carrier control
Transmit mode.
off – Transmit off
on - Transmit on
pure-carrier – Transmission of non-modulated carrier
balance - Transmission of interchanging 0, 1 (on the spectrum analyzer it is in the form of
two spikes with frequency shift equal to the symbol rate) used for evaluation of the residual carrier
and intermodulation values
modulator level [0-360] - TX power level (x -0.1 dBm)
Transmission signal level from -36 dBm to 0 dBm. The greater value corresponds to the lower level.
The router ensures the range from -30 dBm to -5 dBm but the circuitry allows, in the lower portion of
the frequency range, level adjustment over a wider range. It has been decided not to eliminate this
capability for users. A spare decibel may turn out to be very important for some people.
If the command is entered without parameters, interactive level control is activated and it is
convenient for the values selection and adjustment.
UHP#mo le
VAL:380 1:-10 2:-1 3:+1 4:+10 Q-quit
Keys 1 and 2 can increase the level by 1 dB and 0.1 dB, respectively, whereas keys 3 and 4 –can be
used to decrease the level by 0.1 dB and 1 dB. To exit use "q" key.
modulator tlc range 50-360 50-360 - Max/min allowed auto TX level
The levels range where TLC is allowed to control transmission signal level.
The upper limit for cases when most of transmitter power is used should be set by 1 decibel above the
BUC compression point, whereas the lower limit should be placed 8-10 decibel below the upper limit.
If transmitter power is substantially higher than the standard mode requires, the upper limit should
be placed 3 to 4 dB above the clear sky optimal value.
modulator tlc mode off|on - Automatic transmit level control
Switching automatic transmission level control on.
Modulator settings and operation statistics can be printed using the “show interface modulator” command: