BridgeTech VB20 - Page 188

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Maximum signal

strength:

Threshold level for maximum signal strength.

This is a measure of the stream signal power. It is expressed

according to the level mode selection made in the Setup -

ETR view:

dBm: in decibels relative to a reference value of 1mW

dBuV: in decibels relative to a reference value of 1µ V

dBmV: in decibels relative to a reference value of 1mV

Maximum

frequency offset:

Threshold level for maximum centre frequency offset

The impulse response checking threshold values are only relevant when the probe is

licenced with the Advanced RF Option. Threshold values for each impulse will

become visible in the COFDM - Impulse response view as a highlighted box in the

impulse response graph. If an impulse peak does not fall within its box an alarm will be

raised. Threshold values for a maximum of ten impulses may be defined.

Impulse response checking:

Impulse detection

limit:

The impulse detection limit in dB. Signal peaks with lower

level than the detection limit will be regarded as noise and

not considered an impulse.

Enable: It is possible to enable or disable time location and level

check of an impulse. Mark the 'Enable' check-box for the

probe to raise alarm if an impulse peak is not found within

the graph box defined by the specified time and power

limits.

Name: A text string specified by the user to name an impulse.

Typically this will be the name of a transmitter.

Time min: The minimum time an impulse should occur after the main

impulse

Time max: The maximum time an impulse should occur after the main

impulse

Power min: The minimum power of an impulse compared to the main

impulse (in dB)

Power max: The maximum power of an impulse compared to the main

impulse (in dB)

PROBE USERS' MANUAL VERSION 5.0

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