Model 4402B - Krohn
“Quality” in Test and Measurement Since 1949
DC Source/Calibrators, Tunable Electronic Filters,
Wideband Power Amplifiers
Precision Phasemeters, Distortion Analyzers
Function Generators, RC Oscillators
Model 4402B
1Hz to 110kHz
Ultra-Low Distortion RC Oscilaltor
• Frequency Range: 1Hz to 110kHz
• Distortion: Typically <0.0002%
• Output Amplitude: 7Vrms o.c., 3.5V rms into 50 ohms,
•
•
•
•
+48dBm
Balanced 50 ohm Output
Amplitude Flatness: 0.02dB
Calibrated Pushbutton Attenuator
Simultaneous Main, Quadrature and Inverted Outputs
DESCRIPTION
The Model 4402B is an ultra-pure sinewave, stable amplitude
oscillator designed to meet the needs of today’s high precision 16
to 18 bit A/D converter testing, and audio test and measurement
technology.
Covering the frequency range from 1Hz to 110kHz, with precise 3
digit frequency tuning, the 4402B produces a virtually
“distortion-free” (<0.0005%) sinewave for measuring A/D
converter accuracy, audio preamplifier and power amplifier
harmonic distortion. With its exceptionally flat response
(0.02dB), the 4402B eliminates the need to constantly monitor
voltage levels, during frequency response testing.
SPECIFICATIONS
FREQUENCY RANGE: 1Hz to 110kHz.
Accuracy: ±0.5% of frequency setting.
Stability:
Vs. Time: 0.01% in 1hr or less.
Vs. Temperature: 0.05%/°C.
Vs. Line: <0.001% for a 10% change in line voltage.
Control: 2 digits of frequency, calibrated in 1Hz and 0.1Hz
steps, with a calibrated vernier providing continuous
coverage between the 0.1Hz steps, plus a 5 decade
push-button multiplier with overlapping ranges.
MAIN OUTPUT
(specifications apply to each output to ground)
OUTPUT
The 4402B provides a 7Vrms sinewave output (balanced output,
14Vrms end-to-end), 3.5Vrms into 50 ohms, and has no loss in
performance when loaded with a linear 50 ohm load. A 3-position,
push-button attenuator calibrated in 20dB steps, along with a
30dB vernier, provides a total dynamic range of 90dB.
Simultaneous fixed and quadrature (90º) outputs are provided.
Each output is 7Vrms with a 600 ohm source impedance.
The 4402B is the perfect addition to your present test and/or
precision measurement set-up.
Maximum Amplitude: 7V rms open circuit; 3.5Vrms
(+48dBm) into 50 ohm load.
Impedance: constant 50 ohms.
Maximum Current: 75mA rms.
Minimum Amplitude: <0.2mV.
Amplitude Flatness: ±0.02dB, 1Hz to 110kHz.
Amplitude Stability:
Vs. Time: 0.01% in 1hr or less.
Vs. Temperature: 0.05%/°C.
Vs. Line: <0.001% for a 10% change in line voltage.
Krohn-Hite Corporation, 15 Jonathan Drive, Unit 4, Brockton, MA 02301
Tel: 508-580-1660; Fax: 508-583-8989; www.krohn-hite.com; email: sales@krohn-hite.com
Page 1 of 2
4402BData.vp
Ultra-Low Distortion RC Oscillator
Model 4402B
Amplitude Control: A 4-position push-button attenuator
calibrated in 20dB steps from 0dB to –60dB, accuracy
±0.25dB/20dB step; volts rms control with greater than
30dB of coverage calibrated in volts.
Amplitude Stability:
Vs. Time: 0.01% in 1hr or less.
Vs. Temperature: 0.05%/°C.
Vs. Line: <0.001% for a 10% change in line voltage.
Accuracy: ±20% of setting.
Distortion:
Main Output Distortion:
Frequency
Distortion (%)
Distortion (dB)
Frequency
Distortion (%)
Distortion (dB)
1Hz to 10kHz
<0.0005
–106
1Hz to 10kHz
<0.0031
–90
10kHz to 20kHz
<0.0018
–95
10kHz to 20kHz
<0.0056
–85
20kHz to 50kHz
<0.0056
–85
20kHz to 50kHz
<0.0174
–75
50kHz to 110kHz
<0.01
–80
50kHz to 110kHz
<0.031
–70
Hum and Noise: Greater than 110dB below signal (10Hz to
20kHz detector bandwidth).
Phase Accuracy (–90°): 1Hz to 1kHz, ±0.2°; 1kHz to
10kHz, ±1°; 10kHz to 110kHz, ±10°.
FIXED OUTPUT
GENERAL
Amplitude: 7V rms open circuit; 3.5V rms (+13dBm) into
600 ohm load.
Ambient Temperature Range: 0°C to 50°C.
Impedance: Constant 600 ohms.
Amplitude Flatness: ±0.02dB, 1Hz to 110kHz.
Amplitude Stability:
Power Requirements: Switch selectable, 90-132 or
180-264 volts, single phase, 50-60Hz, 18 watts.
Floating Ground: Rear panel switch floats circuit ground
from chassis ground up to 100V.
Dimensions: 3.5“ (8.9cm) high, 9" (23cm) wide, 8.5”
(21.6cm) deep.
Vs. Time: 0.01% in 1hr or less.
Vs. Temperature: 0.05%/°C.
Weights: 5 lbs (2.3kg) net; 7 lbs (3.2kg) shipping.
Vs. Line: <0.001% for a 10% change in line voltage.
Distortion:
Accessories: 3-terminal line cord; operating manual.
OPTIONS
Rack Mounting Kit: Part No. RK-39 permits the installation
of the Model 4402B into a standard 19" rack spacing.
Frequency
Distortion (%)
Distortion (dB)
1Hz to 10kHz
<0.0005
–106
10kHz to 20kHz
<0.0018
–95
OPTIONAL ACCESSORIES
20kHz to 50kHz
<0.0056
–85
CAB-025: Cable, BNC, 3ft, Low Noise.
50kHz to 110kHz
<0.01
–80
Extended 1 Year Warranty: Part No. EW4402B.
Specifications are subject to change without notice.
Phase Accuracy (180° from Main Output): 1Hz to 10kHz,
±0.2°; 10kHz to 110kHz, ±1°.
QUADRATURE OUTPUT
Amplitude: 7V rms open circuit; 3.5V rms (+13dBm) into
600 ohm load.
Impedance: Constant 600 ohms.
Amplitude Flatness: ±2dB, 1Hz to 110kHz.
Krohn-Hite Corporation, 15 Jonathan Drive, Unit 4, Brockton, MA 02301
Tel: 508-580-1660; Fax: 508-583-8989; www.krohn-hite.com; email: sales@krohn-hite.com
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4402BData.vp
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