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Instruction Manual
Tracking Filter Type 1623
Filter Center Frequency
BrOel&
Kjaer
Tracking
Filter
Type 1623
Tachometer
Input
r<;)
20mV
-
120V
033-0280
Trigger level
Battery
'
Recorder
Sync
.
• • a • •
.
.
.
On~
.
-
1V
+IV
r-
Manual Tuning
/
Preaet
•--,
200Hz
·
I
20kHz
2Hz
1
200Hz
, - - - -
Tracking Mode
- . _ ,
Tachm.
Filter
Noise
Inpu
t
Input
Manual
Fiher
-r-1-r---
-.ndwtdth
6%
.
12%
23%
I
A
small
battery operated tracking filter
which can be synchronised with the funda-
mental frequency or any harmonic between
1 /99
and
99/1
of a periodic tuning signal .
Combined with a vibration meter. sound le-
vel
meter,
or
measuring
amplifier,
the
1 623 allows signal analysis with respect to
a variable frequency reference signal, for ex-
ample vibration level as a function of shaft
speed. Frequency range covered is 2Hz to
20kHz with filter bandwidths of 6%, 1 2%.
and 23%. Tuned frequency synchronisation
signals provided for the Portable Level Re-
corder Type 2306 and for
X-V
recorders.
Manual tuning of the filter by means of a
front panel tuning knob coupled to a built-in
oscillator.
+
Bri.iel
&
Kjcer
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