5
TRIGGER SWITCH.
The Ultraprobe is always "off'
until the trigger switch is pulled. To operate, simply
pull the trigger; to turn the instrument off, release
the trigger.
FREQUENCY ADJUST DIAL.
There are numbers ranging from 100 kHz down to 20 kHz.
These represent the range of frequency selection capable with
the Ultraprobe. These frequencies may be "tuned in" when
performing mechanical and valve analysis with the contact
(stethoscope) probe (refer to description of contact probe).
There is also a position, labeled "fixed band". This selection
automatically locks the circuitry of the Ultraprobe into the peak
response of the transducers of either the contact (stethoscope)
module or the Trisonic
™
Scanning Module. It is an extremely
narrow band response that, when used with the contact
(stethoscope) module, reduces most stray unwanted pipe and
mechanical noises. In the scanning mode, it provides for
extreme sensitivity and is the preferred position in leak
detection and electrical inspection activities.
METER SELECTION.
There are three positions for this dial:
Log: this selection allows the meter to respond in a real-
time, instant, mode. This selection is used when fast,
instant meter response is needed, as in leak detection.
Lin: this selection, linear, can be considered a slow
response. It eliminates the high and low swings of the
meter and averages the response for a more
measurable result. This selection is utilized when too
rapid a meter response might be confusing to the
operator.
Aux: this is the auxiliary position, which is to be used
ONLY when a specially adapted instrument is to be
interfaced with the Ultraprobe.
