Epson USN 52R, USN 52L manual Gate threshold

Operation		Function check
Check	Result	Remark
13. Gate threshold
For settings see 2.
GATE LOGIC: POSITIVE
a-THRESH: 40%
a-START: 30 mm
a-WIDTH: 40 mm
1st Echo to 38% screen HT.
Increase GAIN setting by 1 dB.	Both LEDs flash alternately when the echo
	exceeds the gate.
a-THRESH: 80%
1st Echo to 78%
Increase GAIN setting by 1 dB.	Both LEDs flash alternately when the echo
	exceeds the gate.
14. Memory
Set any echo display and store with	The echo display and settings are stored.
STORE: ON.
Remove N30.	Echo display disappears.
RECALL: ON.	Echo display appears. Echo display and
	settings must correspond to the condition
	when stored.
Switch off instrument Switch on after	Echo display appears again until a parameter
about 30 seconds. RECALL: ON.	is changed (e.g. GAIN).

5-70 Issue 05, 02/00 Krautkramer USN 52R/USN 52L