Amber 3500 Distortion & Noise Measuring Set
$ 1200.00 US  Please visit: www.torontosurplus.com for further details.
This unit incorporates in a single compact enclosure an ultra low distortion sine-wave generator, a high performance total harmonic distortion measuring system and a wide range, high sensitivity signal level and noise measuring facility. In addition a tunable band pass filter is included allowing the system to function as a selective voltmeter.

Specifications - Generator

Amber 3501 Distortion and Noise Measuring System
$ 1500.00 US  Please visit: www.torontosurplus.com for further details.
This unit has an ultra-low distortion sine wave generator, a high performance THD measuring system, and a wide range & high sensitivity signal level and noise measuring facility. In addition, a tuneable band pass filter allows the unit to operate as a selective voltmeter or for manual spectrum analysis. The filter may also be configured as a low pass filter for band limited noise measurements. The instrument also incorporates a comprehensive set of user modifiable filters for noise measurements to various standards.

SPECIFICATIONS:
GENERATOR:
• Frequency Range: 10 Hz to 100 kHz
• Output Power: -60 dBm to +20 dBm into 600 ohm load
• Output Amplitude Flatness: 20 Hz to 20 kHz +/-0.1 dB
• Output: Either Balanced (ring-tip-sleeve connector) or Unbalanced (BNC connector)
• Signal Distortion: 10 Hz to 20 kHz <0.001%
  
  DISTORTION, LEVEL & NOISE METER:
• Frequency Range: 10 Hz to 100 kHz
• Input Amplitude Range Distortion: +40 dBm to -30 dBm, wide band level to -70 dBm, narrow band level to -120 dBm
• Input Impedance: 100k Ohms shunted by <100 pF
• Input Residual Noise: <-110 dBV or 3 uV
• True RMS readings for waveforms with a crest factor <3
• Fundamental Rejection: 10 Hz to 20 kHz >100 dB
• Filters: filter 1 = 400 Hz high pass, filter 2 = 30 kHz low pass, filter 3 = 80 kHz low pass, filter 4 = optional "A" weighting, CCIR
• Input monitor connector for external oscilloscope monitoring of the fundamental
• Distortion monitor for external monitoring of the waveform with the fundamental removed

Amber 5500 Programmable Distortion & Noise Measurement System
$ 2650.00 US  Please visit: www.torontosurplus.com for further details.
The 5500 has the Improved Performance & High Speed options as well as firmware version 4.10 which is the most recent version.

SPECIFICATIONS:
Signal Source
• Frequency Range 10 Hz to 100 kHz resolution to 0.005%
• Amplitude Range 10 Vrms to < 1 mVrms open circuit
• THD 50 Hz to 10 kHz <0.005% (-106dB)
• Unbalanced, Floating, or Grounded Output (Balanced 600 ohms, Balanced 900 ohms, Unbalanced 50 ohms)

Analyzer Section
• Frequency Range 8.5 Hz to >500 kHz
• Level Range 100 Vrms to <10 uVrms (+40 dBV to -100 dBV)
• Level Flatness +- 0.25 dB or better
• Wideband Residual Noise (600 ohms, 20 Hz to 100 kHz, A weighting) <2.5 uV / -112 dBm
• Narrowband Residual Noise (600 ohm, 1 kHz bandpass) <0.7 uV / -123 dBm

Frequency Measurement
• 9.5 Hz to 105 kHz, 5 digits
• accuracy better than 100 ppm

THD + N Measurement
• frequency range 9.5 Hz to 105 kHz
• THD+N range >32% to 0.0000% (>-10 dB to -120 dB)
• Fundamental rejection 120 dB or better

Standard Filters
• 400 Hz High Pass, 60 dB per decade, Butterworth Response
• 30 kHz Low Pass, 60 dB per decade, Butterworth Response
• 80 kHz Low Pass, 60 dB per decade, Butterworth Response

IEEE-488 Interface

HP 331A / Agilent 331A Distortion Analyzer
$90.00 Parts Unit, Complete, As-is  Please visit: www.torontosurplus.com for further details.
This unit measures total disortion levels of 0.1%-100% full scale in 7 ranges at any frequency between 5 Hz to 600 kHz; harmonics are indicated up to 3 MHz.
$90.00 Parts Unit, Complete, As-is

HP 3335A / Agilent 3335A Synthesizer / Level Generator, 200 Hz - 81 MHz
$ 3,800.00 US  Please visit: www.torontosurplus.com for further details.
This unit combines the frequency, accuracy and stability of a synthesized generator with time-saving convenience of digital sweeper. It incorporates a state-of-the-art attenuator with accuracies of up to + .025 dB over the 81 MHz frequency range. Frequency stability up to + 1 x 10^-8 / day is provided by an internal temperature-controlled oscillator.
SPECIFICATIONS
Resolution: .001, Harmonic Distortion: 200 Hz-10 MHz <-45 dBc; 10 MHz-80 MHz <-40 dBc, Amplitude Range -88.74 dBm to + 13.01 dBm depending on options and impedance, HP-IB.
$ 3,800.00 US

HP 333A / Agilent 333A Distortion Analyzer - Like HP 331A & HP 334A
$ 425.00 US  Please visit: www.torontosurplus.com for further details.
The Hewlett-Packard Models 333A & 334A Distortion Analyzers are solid state instruments for measuring distortion and ac voltages. The Models 333A and 334A include two control loops that automatically tune both legs of a bridge circuit which rejects the fundamental when the rejection circuit is initially set within the range of the loops. A high impedance detector which operates from 500 kHz to greater than 65 MHz provides the capability of monitoring the distortion of the amplitude modulation on an RF carrier.

This unit is the same as the 331A, but Adds
Auto-nulling which measures down to 0.1% full scale distortion and
High pass filter which attenuates frequencies below 400 Hz to minimize hum.The 333A is the same as the 334A, but without the AM detector, and carrier frequency.
$ 425.00 US

HP 339A / Agilent 339A Distortion Measurement Set
$ 950.00 US  Please visit: www.torontosurplus.com for further details.
The 339A measures total Harmonic Distortion, True RMS Volts and has a built-in sinewave oscillator which is phase-locked to the meter input receiver. This unit measures THD as low as 0.0018% over a 10 Hz to 110 kHz, including harmonics to 330 kHz. Distortion measurement range is 0.01% to 100%. The oscillator frequency range is 10 Hz to 100 kHz. The output level is variable from 1mV to 3 V RMS into 600 ohms. Voltmeter range is 1mV to 300 V RMS full scale.
$ 950.00 US