Web GUI Monitoring & Control
4.7.6.1
Input
The selection can be off, PRBS, ASI X for stream X, ASI 1, ASI X L2 and ASI 1 L2. Setting Off will
prevent any transmission of that stream. Setting PRBS will output a random stream and the rate
will be set by cut off rate if the rate limit is set otherwise the PRBS will fill all available bandwidth.
4.7.6.2
Redundant Input
The input is selected from off or ASI N where N is the redundant ASI pair e.g. for stream 1 the
redundant input would be ASI 2. If the main input is removed then the unit will switch to the
redundant input, which will cause an alarm to be raised. When the main input is restored the unit
will continue to use the redundant input until this stream is reconfigured.
4.7.6.3
ISI
Input Stream Identifier is a value from 0 to 255 which should be unique for each stream. This is
defined within the DVB-S2 standard.
4.7.6.4
PRBS Mode
This is the polynomial used for the PRBS sequence. This option is only available if PRBS has been
selected for the input.
4.7.6.5
Rate Limiter
When this is selected the data rate will be limited to the rate set in the cut off rate text entry box.
This is intended to limit a stream to a set bit rate and prevent it stealing bandwidth from a fellow
stream. This is also used to set the bit rate for the PRBS sequence.
4.7.6.6
Cut off rate
This is only available if the rate limiter has been selected. This will set the maximum rate and input
will be allowed before data is discarded. The value is set in bits per second. This also sets the rate
of the PRBS sequence.
4.7.6.7
Packet
The data can be transmitted as TS (Transport streams), GSC (Generic Stream Continuous) or GSP
(Generic Stream Packetised).
4.7.6.8
Packet Len
This mode is only valid if the packet selected is GSP. It sets the packet length in bytes.
4.7.6.9
Packet Sync
This mode is only valid if the packet selected is GSP. It sets the Sync mark expected in the
incoming data stream.
4.7.6.10
ISSY
Input Stream Synchronisation (ISSY) is a time stamp used for a constant delay when using
ACM/VCM. It is recommended that it be used for Video. Short adds 2 bytes per MPEG packet
while Long adds 3 bytes per packet.
SBM75e Series Modulator Installation and Operation Manual
4-17
Summary of Contents for L-Band Satellite Modulator
Page 14: ...Getting Started 1 8 SBM75e Series Modulator Installation and Operation Manual...
Page 45: ...Front Panel Monitoring Control SBM75e Series Modulator Installation and Operation Manual 3 15...
Page 73: ...Web GUI Monitoring Control 4 28 SBM75e Series Modulator Installation and Operation Manual...
Page 78: ...Technical Specification SBM75e Series Modulator Installation and Operation Manual A 5...
Page 90: ...Glossary B 12 SBM75e Series Modulator Installation and Operation Manual...
