TESTER No. 176A
The Tester No. 176A is used in the Pair Identification Equipment No. 1 along with an Indicator Unit No. 1A.

Tester No. 176A gives a digital indication at the remote end of a cable, of the terminating position at the exchange of any pair in the cable. Voltage pulses received over a control pair cause a mechanical counter to operate. An illuminated display is also operated from the mechanical counter.

First use was circa 1970.

Drawings - CN10619, CN10635, CN10819, CN10822 and CN13771.

Specification - LN248.

Pair identification on new housing estates - TI A2 C1118.

Using the Pair Identification Equipment No. 2 - TI A2 H1105.


 

 
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Last revised: January 18, 2026
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