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6. SPECIFICATIONS
PREAMPLIFIER:
Input Resistance:
Varies from 450 MQ at 20 dB gain to 2 GQ at
0 dB gain.
Input Capacitance:
8 pF.
Max. Input Signal:
±
15 V at 0 dB gain
±
1.5 Vat 20 dB gain.
Noise (referred to input):
From 2 Hz to 40kHz with 1 nF across input
60 J,J.V min. gain
20 J,J.V max. gain.
Harmonic Distortion:
<
1% with 10 V RMS input at 0 dB gain, ac-
celeration mode and f <3kHz.
Frequency Range:
Freq. Range
Mode
Range
Hz
1 to 35,000
Ace.
10 m/sec
2
(±
1 dB)
1 to 4,000
Vel.
3.16
m/s
10 to 10,000
Vel.
0.316 m/s
1 00 to 30,000
Vel.
0.0316 m/s
1 to
30
Displ.
1,000
mm
3 to
100
Displ.
100
mm
10 to
300
Displ.
10
mm
30 to
1,000
Displ.
1
mm
100 to 3,000
Displ.
0.1
mm
300 to 1 0,000
Displ.
0.01 mm
Output Voltage:
Max.
±
15 V in
acc~leration
mode
Output Load:
Min. 1 Mn.
31
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