User Manual Part 2

1. DESCRIPTION OF OPERATION

1-40

1.32 How to Reduce Second-trace Echoes

Echoes from very distant targets can appear as false echoes (second-trace echoes)

on the screen. The second-trace echo occurs when the return echo is received one

transmission cycle later, or after a next transmission of radar pulse.

Second-trace echoes

1. Press the MENU key to open the menu.

2. Use the Cursorpad (S or T) to select [Echo] and press the ENTER key.

3. Use the Cursorpad (S or T) to select [2nd Echo Rejector] and press the ENTER

key.

2nd Echo Rejector options

4. Use the Cursorpad (S or T) to select [Off] or [On] then press the ENTER key.

5. Press the MENU key to close the menu.

1.33 Watchman

The Watchman sounds the buzzer to tell the operator to check the radar display. The

radar transmits for one minute and then goes into standby for the selected time inter-

val. If the target alarm is active and a target is found in the alarm zone, Watchman is

cancelled, and the radar transmits continuously.

How watchman operates

In standby, the timer near the <WATCH> label at the center of the screen counts down

the remaining time until the transmission. When the set time interval has passed, the

audio alarm sounds, the timer disappears and the radar transmits for one minute. After

one minute, the audio alarm sounds and the watch alarm timer again begins the count-

down sequence.

If you press the STBY/TX key before the set time interval comes, the radar goes into

transmission.

Second-trace

echo

TX repetition

Actual range

False echo

range

ST-BY

5,10 or 20 min.

1 min.

Watchman

starts

* Beep sounds just before radar transmits

or goes into standby.

ST-BY

5,10 or 20 min.

1 min.