NARDA 8718B - Manual (Page 70)

69 Chapter 10 Alarm Settings
Variable Tone Alarm
1. Use F3 (ON) or F4 (OFF) to change the status of the
fixed alarm. The variable tone alarm constantly
generates a series of tones that increase in frequency
in direct proportion to field strength.
2. If you want to turn the fixed alarm on or off, do that next
See Fixed Alarm on the previous page.
3. When you are satisfied with all the alarm settings,
press ENTER and the meter will return to the
measurement screen.
N
ote
The fixed and vari-
able tone alarms op-
erate independently
of each other. The
meter can be set to
have both alarms
off, either one of the
alarms on, or both
alarms on. If both
alarms are turned
on, the variable tone
rate will vary with
the field strength un-
less the measured
field strength ex-
ceeds the fixed
alarm threshold.
The alarm will then
sound a continuous
tone.