Cofdm - Impulse Response (Requires Advanced Rf Option) - BridgeTech VB20 User Manual

6.13.4 COFDM - Impulse response (Requires Advanced RF Option)

The COFDM impulse response graph displays impulses as a function of time and power
with reference to the main impulse. If impulse threshold values have been assigned to
a COFDM stream (frequency) these will become visible in the graph as highlighted
boxes defining minimum and maximum values for impulse time and power for each
enabled impulse. COFDM threshold templates are defined in the COFDM - COFDM
threshold view. A COFDM threshold template is assigned to a COFDM stream in the
COFDM - Tuning setup view.
Impulse time and power are listed at the right hand side of the COFDM impulse graph.
Power peaks that are lower than the impulse detection limit are not listed. The impulse
detection limit is displayed in the graph as a bold light grey grid line.
If an impulse peak does not fall within its threshold limit box, the box colour will
change to red and an alarm is raised. Note that 'SFN measurements' must be enabled
in the ETR thresholds template associated with a COFDM stream for impulse check
alarming to be active. ETR threshold templates are defined in the ETR - ETR thresh.
view. An ETR threshold template is assigned to a COFDM stream in the COFDM -
Tuning setup view.
PROBE USERS' MANUAL VERSION 5.0
2014 © BRIDGE Technologies Co AS - Bentsebrugata 20 - N-0476 Oslo, Norway - tel: +47 22 38 51 00 -
www.bridgetech.tv
191