TSAT 3000 - 3.11.7 PHL_INBOUND_GUARDPERIOD

TSAT 3000 - Telemetry and data transfer via SATellite
TSAT 3000 Configuration Parameter Description, January 2013 Page 76 of 124
3.11.5 PHL_{OUTBOUND | INBOUND}_FILTERTYPE
Default 1, Range 1…3
Set Filter-Type for Outbound PHL_TX_HUB_FREQUENCY carrier.
Set Filter-Type for Inbound
PHL_TX_RT_FREQUENCY carrier.
Value Description
1 RRC
2 RC
3 Flat
Note: DSP will be restarted 10 seconds after you’ve changed CURRENT value.
Ver >= 30.8.0: Restart of DSP is enabled by bit 2 (0x0004) in
UTL_UTILITY_MASK.
3.11.6 PHL_{OUTBOUND | INBOUND}_FILTERALFA
Default 0.3, Range 0.1…1.0
Set Filter-Alfa for Outbound PHL_TX_HUB_FREQUENCY carrier.
Set Filter-Alfa for Inbound
PHL_TX_RT_FREQUENCY carrier.
Note: DSP will be restarted 10 seconds after you’ve changed CURRENT value.
Ver >= 30.8.0: Restart of DSP is enabled by bit 2 (0x0004) in
UTL_UTILITY_MASK.
3.11.7 PHL_INBOUND_GUARDPERIOD
Ver <= 30.2.0: Default 1000, Range 0… 8000
Ver >= 30.3.0: Default –1, Range –1…30000
Set Guard-Period between packets on Inbound PHL_TX_RT_FREQUENCY carrier (from RT to
HUB), expressed in micro-seconds.
Ver >= 30.3.0
You may specify
DEFAULT Guard-Period (i.e. value –1). It’s recommended to always use
DEFAULT Guard-Period, as this will ensure the highest Inbound capacity. In this case the
CURRENT value will be calculated to be as small, but still sufficient, as possible:
• PPR is disabled
: 4 x Symbol-Time.
• PPR is enabled
: (4 + (PPR_PULSES – 1) x PPR_SEPARATION) x Symbol-Time.
Symbol-Time = 1.000.000 / PHL_INBOUND_SYMBOLRATE.
See also PHL_SLOT_PHASE_MODE
PHL_{OUTBOUND | INBOUND}_SYMBOLRATE
MAC_TIMESLOT_MARGIN
Note: DSP will be restarted 10 seconds after you’ve changed CURRENT value.
Ver >= 30.8.0: Restart of DSP is enabled by bit 2 (0x0004) in
UTL_UTILITY_MASK.