
Options
Reference Guide: RX1290 H.264 Contribution Receiver Page 6-3
ST.RE.E10228.1
6.1 Hardware Enabled Options
These options require extra hardware to be fitted to the unit. Contact the Customer Services
Helpdesk for details (see Preliminary Pages).
6.2 DVB-S2 Input Cards (RX1290/HWO/DVBS2 and
RX1290/HWO/DVBS2/IF/CONST)
6.2.1 General
The DVB-S2 Input card supports DVB-S, QPSK demodulation and DVB-S2, QPSK and 8PSK
demodulation.
Two options are available. RX1290/HWO/DVB-S2 offers four L-band inputs,
RX1290/HWO/DVB-S2/IF/CONST offers three L-band inputs plus an
IF monitor input plus received constellation output.
6.2.2 Connector Details - L-Band Inputs
Connect the L-band output of a suitable LNB to the F-type connector
either directly or via a suitable attenuator giving adequate
consideration to lightning and surge protection. The active input is
chosen using the Input Status Menu (Menu 2).
In most cases an attenuator will not be required. The following list summarises the
circumstances when one should be used.
When the desired input level is greater than the specified maximum permissible (-25 dBm).
When the downlead is a short length of low-loss cable and the LNB in use has a poor return
loss (7 dB min).
When the Receiver is receiving one of many carriers in a multi-carrier FDM system and the
level of the wanted signal is close to the specified maximum permissible.
The specification for this connector is given in Annex B, Technical Specification.
Table 6.1: DVB-S2 Satellite Receiver (L-band) Connector
Input Specification
Connector Type F-type, Female
Connector designation
IN 1, IN 2, IN 3, IN 4
3 x L-band inputs only on RX1290/HWO/DVBS2/IF/CONST
Pin: Centre
Shield
RF Input
Ground/Chassis
LNB Supply Refer to the next caution box
Impedance 75 Ω
6.2.3 Connector Details – IF Monitor Input
(RX1290/HWO/DVBS2/IF/CONST)
Connect the IF Monitor input to a suitable IF frequency source e.g. a satellite
modulator. The input can be activated using Input Status Menu (Menu 2).
IF Input
IN 1/2/3/4
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