Northrop Grumman Sperry Marine VisionMaster FT, Руководство пользователя

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Radar/Chart Radar User Guide Basic Operation of Radar
65900010 3-29
Radar Transmission Pulse Length
The current selection of pulse length is indicated in the pulse
length toggle button. The caption is an abbreviation of the
current pulse length selection (SP, MP or LP).
The pulse length can only be changed on a master display and in Transmit.
On a Slave display, or when in Standby, the pulse length is greyed out.
There are three pulse lengths:
 Short Pulses (SP) are used at close range to improve the
discrimination and range accuracy of received echoes.
 Long Pulses (LP) are used at long range to improve the ability of
the radar to pick out targets at distance.
 Medium Pulse (MP) is a pulse length used as an optimum between
discrimination and long range detection.
Pulse lengths are restricted to the following ranges:
 SP is available on the 3NM range and below.
 MP is available in the 0.5NM to 24NM ranges.
 LP is available at 3NM range and above.
If the pulse length is changed when the current range scale is outside the
permitted pulse length range listed above a temporary prompt:
Invalid
Range for Pulse Length appears.
If the range scale is changed to a value outside the currently selected pulse
length parameters listed above, the pulse length automatically changes.
To change the pulse length, do the following:
1. Left click on the pulse length button. This will toggle through the
available choices for the pulse length, depending on range.
Or
1. Right click on the pulse length button. A list of
available pulse lengths will be shown in a drop
down menu.
2. Left click on the pulse length you want to use.
Radar Transmission Pulse Length on Dual Radar
On a dual radar system channels 1 and 2 may
have a different pulse length selected, providing
both transceivers are in Transmit mode.