HP Agilent 3785A PCM/TDM Jitter Generator & Receiver 48Hz - 66Hz 220V
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HP Agilent 3785A PCM/TDM Jitter Generator & Receiver 48Hz - 66Hz 220V is backordered and will ship as soon as it is back in stock.
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Product overview
Product overview
Brand: HP / Agilent
Type: Jitter Generator Receiver
MPN: 3785A
Carry Handle / Stand: Yes
Power: 100/120 VAC 220/240 VAC ±10%
HP / Agilent 3785A PCM/TDM Jitter Generator & Receiver 48Hz - 66Hz 220V
In good condition and full working order
Included:
1x HP / Agilent 3785A PCM/TDM Jitter Generator & Receiver 48Hz - 66Hz 220V
HP 3785A Jitter Generator and Receiver is a dedicated jitter measurement system for testing and evaluating the performance of CEPT or Bell digital transmission terminal and link equipment up to and including the third level (34368 kb/s or DS-3) in the digital hierarchy. The HP 3785A can be used in production testing, field installation and maintenance of the CEPT or Bell Digital transmission system including PCM/TDM transmission over cable, radio, satellite, and fiber optic links. The principal application is thorough testing to current CCITT Recommendations at each level in the digital hierarchy.
In addition to providing a comprehensive measurement capability which includes in-service jitter measurements, the microprocessor-controlled Jitter Generator and Receiver is easy to use with ergonomic layout of switches and connectors on the front panel. The bus-controlled operation and automatic measurement sequencing.
The Jitter Generator may be used to phase modulate an internally provided crystal clock, an externally applied data stream. Sinusoidal modulation is provided by an internal synthesizer whose amplitude and frequency can be set manually or swept, transient-free, through a CCITT shaped jitter tolerance mask programmed into the instrument. Alternatively, external modulating signals can be applied. The frequency of internal modulation are in accordance with CCITT Recommendation 0.171 and are displayed on the front panel.
The Jitter Receiver offers six types of measurement:
Absolute jitter amplitude in U.I. pk-pk
Jitter peak, positive or negative
Jitter hit count of the number of times received jitter extends a user-defined hit threshold in U.I. pk
Jitter hit seconds count of the number of seconds in which one or more jitter hits occur
Jitter hit-free seconds count of the number of seconds which are free of jitter hits
Maximum absolute jitter amplitude in U.I. pk-pk is held during the jitter analysis gating period
Simultaneous measurement of all six parameters is possible with result display selection. In addition, the Receiver has a built-in interval timer and real-time clock to allow measurements of jitter distribution against time to be made.
The measurements can be made on clock or data inputs with or without internal filtering. Two high pass filters and one low pass filter as specified by CCITT are provided for each of the four bit rates. In addition, external filters can be connected between the demodulated jitter output and the measuring circuitry input. The demodulated jitter output can also be used to measure rms jitter amplitude on an external voltmeter or to display jitter spectrum on an external analyzer.
The clock reference for the jitter measurements can be internally derived from the applied data or clock via a narrow band phase-locked loop or externally derived from an applied reference.
The data input allows out-of-service or in-service measurements. The MON facility for in-service measurements has built-in additional gain to compensate for the flat loss at the protected monitor points
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