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Wandel & goltermann jdsu gh-1 dc loop-holding circuit


WANDEL & GOLTERMANN JDSU GH-1 DC LOOP-HOLDING CIRCUIT
The W&G GH-1 (BN984/00.12) is a passive device and contains two individual DC loop holding circuits, each 100 mA, in one box. Mostly GH1 is used in combination with the Wandel and Golterman PCM-4 or PCM-5 but it will work with other test equipment as well when the telephone line is needed to be operational during measurements.