
Test Electronics
Used - Reconditioned and Used Test Equipment
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Monitor Record Disturbance AC and DC power, Temperature, Humidity, and R industrial
The 626 Disturbance Analyzer is a modularly expandable system for measuring surges, sags, spikes, dropouts, and frequency errors on DC and AC power lines. Ideal instrument for monitoring environmental disturbances effecting operation of computers and other electronic equipment. Provides printout of disturbances including time and date. Programmable via the front-panel or RS-232 port. Up to five modules can be installed. Power Requirements: 90 to 130 VAC or 180 to 250 VAC (switch selectable) from 47 to 450 Hz or 3 A at 12 VDC for extended battery operation without AC power. Uses any of the readily available 626 series plug-in modules. Can be used for measuring, monitoring, recording, and printing disturbances in ac power, dc power, temperature, and humidity, radio frequency, etc. Details for specific measurements can be found in the information on the various plug-in modules. Up to five individual monitoring modules can be added to this mainframe which provides the operating controls alphanumeric printer, time base, and power supply. Each monitoring module can be user-programmed with the precise limits beyond which disturbance detection occurs. A system check facility activates an automatic calibration and diagnostic routine to verify proper operation. An RS232 port is provided for data output and remote programmability. AC powered the 626 is protected from power outages by internal rechargeable batteries that provide 10 to 40 minutes of full operation. A separate battery supply protects the time clock data and program memories for 1 to 3 months. 
Noise measurements: from -1 dBm to +121 dBm Input Impedance: 75, 135, 150, 600, or 900-ohms industrial
The HP 3555B Transmission & Noise Measuring Set conforms with Bell System requirements and makes noise measurements from -1 dBm to +121 dBm. Noise measurements: from -1 dBm to +121 dBm. Terminated input impedance: 75, 135, 150, 600, or 900-ohms, balanced.
4-Wire Switch or 2 Independent, 2-Wire Switches industrial
The HP 3777A Channel Selector is a 4-pole access switch for telecom applications. It may be configured as a single 4-wire switch or as a two, independent, 2-wire switches. Channel capacity is arranged by adding standard modules. Unselected channels are switched to 600 ohm terminations. Option H05 30 channels with WECO 310 connectors.
Telecom Measures a Variety of Telecom Paramters industrial
Measures a wide variety of telephone and other telecomunications paramters. Generates test tones and provides convenient access to measurements with other equipment. 