2828926

ITU-T O.81 [ Active ]

Group-delay measuring equipment for telephone-type circuits

standard by International Telecommunication Union-T , 11/01/1988

📝 Amendments Available

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Full Description

General

The transmitter output and the receiver input must be earth free and balanced. It must be possible to apply a maximum direct current of approximately 100 mA to the connected measuring instruments for the purpose of loop holding.

 

Product Details

Edition:
88
Published:
11/01/1988
Number of Pages:
8
File Size:
1 file
 

Amendments, rulings, supplements, and errata

  1. ITU-T O.81 NOTE


    A measuring signal (multitone test signal) for fast measurement of amplitude and phase for telephone type circuits