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Frequency Range:
Amplification:
Input Impedance:
Input Attenuator:
Specification.
o.2 Hz
(c/s)
to lOOooo Hz
(c/s)
within
±
o.5 dB
when
"Sensitivity Adjustment"
is
set
to
"0"
(min. amplification).
2
Hz
(c/s)
to
20ooo
Hz
(c/
s)
within
±
3 dB when
"Sensitivity
Adjustment" is
set
to
"10"
(max.
amplification).
Maximum
38
dB approx.
voltage amplification
when
set for acceleration measurements.
200
M.Q paralleled by
approx.
50 pF.
"Attenuation":
Two steps of 40
dB
with an accuracy
of
±
o.5
dB re. position
"1 ".
Max. Output Voltage:
In condition "Acceleration":
20 V peak when "Sensitivity Adjustment" is in posi-
tion "10" (max. amplification).
10
V peak when "Sensitivity Adjustment is in posi-
tion "0" (min. amplification).
Hum and Noise Level:
12 t-tV approx. referred to "Input" at maximum
amplification and with Preamplifier shaker table
disconnected from the mains.
lntegration Switch:
Allows selection of acceleration, velocity or dis-
placement measurements of the investigated vibra-
tion.
Built-in Shaker Table:
Driven by the mains
voltage
and
brought
in re-
sonance with
the mains
frequency
by
adjustment
of the knob
"Resonance
Adjustment". The accelera-
tion of the shaker table can be adjusted by another
knob,
"Amplitude
Adjustment".
Power Supply:
100 to 240 Volts without
adjustment,
50 or 60 Hz
(c/s).
17
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