MODEL 227 FREQUENCY TO VOLTAGE CONVERTER

Features

• Internal crystal calibration source
  
• Six frequency ranges
  
• Input isolation to 1000 V
  
• Analog output

Description

Up to six channels of Model 227 mount in a 19" wide x 5.25" high x 11" deep rack adaptor. Model 619 Differential Amplifiers can also be installed in the rack in any combination of modules. A power supply module also plugs into the rack, and provides the required unregulated DC voltages to operate the system. Operation of the unit is over a range of frequencies from 10Hz to 10kHz.

Specifications

Input: 0.025V peak to 100V peak

Input isolation: Transformer isolated to 1000VRMS

Common mode rejection: 2.5VRMS DC to 1kHz will not trigger the unit

Input comparator: Front panel threshold adjustable from 0 to 1VDC, after transformer AC coupling

Frequency range: Six fullscale ranges, selected with front panel switch; 200Hz, 500Hz, 1kHz, 2kHz, 5kHz, 10kHz

Internal calibration: Crystal oscillator provides 100% fullscale calibration signal

Analog output: 0-10VDC fullscale output, with front panel trimpot to adjust span; front panel BNC for voltmeter monitoring

Output suppression: Front panel trimpot and switch allows output voltage to be offset to allow better monitoring of small frequency variations

Output noise: 50mV p-p ripple

Mechanical: 19"W x 5.25"H x 11"D, 6 module rack adapter, Model 4015-111

Carrying case: 2 module desktop case, Model 4017-110

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