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Signal Noise Ratio:
Frequency Scanning:
Maximum Distortion:
Automatic Output
Regulator:
IMPEDANCE) o.1 dB at 10ooo Hz with
reference 10 V.
NB. With MATCHING IMPEDANCE in
position "AU." inaccuracy from meter
attenuator is zero.
Frequency characteristic: Within
.±
o.2 dB in the
range 200 Hz to 200 kHz. Reference
10ooo Hz.
Higher than 70 dB.
Worm gear in oscillator permits variable capacitor
to be driven by motor of Level Recorder Type 2305.
Connection by flexible shaft
(UB
0041).
Magnetic clutch for set and release of drive.
Provision for clutch remote control.
Complete synchronization with Level Recorder
frequency calibrated paper.
Frequency in Hz
200
2ooo
20ooo 200ooo
ATTENUATOR OUTPUT
no Load at 5 V,
approximately.
o.7%
o.3%
0.3%
1.0%
LOAD, 1 watt loaded
6lJ
1.0%
0.5%
0.5%
1.0%
6oooQ
1.2%
0.6%
0.6%
1.8%
Output voltage automatically regulated when re-
quired.
Built-in compressor amplifier allows for a regulat-
ing range of at least 45 dB, to within 2 dB in fre-
quency range 200-200ooo Hz.
Required regulation voltage at COMPRESSOR IN-
PUT 3 V
(approx.),
with COMPRESSOR VOLTAGE
potentiometer at maximum,
"10".
Input impedance 10 kohms.
Regulation speed variable in
steps:
30-100-300
and looo dB/sec.
Frequency Modulation:
FREQUENCY DEVIATION continuously variable 0
to
±
2ooo Hz. Modulation frequency of built-in
saw-tooth
oscillator: 2-4--8-1&-32 and 64 Hz
variable in steps.
Provision for external modulation.
Stability, Output Voltage:
±
10% deviation of power
supply
gives less than
::!:
o.5 dB alteration in output level.
43
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