Electrical Test Instruments MAC-21
Section III
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MAC-21
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Copyright(C) 1994-2004 Electrical Test Instruments, LLC All Rights Reserved
Page III-6
MAC-21 Internal Parts
INPUT CONNECTOR
: This connector, located on the upper rear corner of the MAC-21,
provides 120 VAC control power, and connects to the air core CT (current sensor), and
initiate circuitry of the test set. The wiring of this connector is essentially compatible
with that of the EIL Accu-Amp and is designed to facilitate removal of the MAC-21 for
service or shipment. Additional pins are used to provide isolated logic level control for
motorized vernier raise and lower for the current hold feature.
Figure II-2: MAC-21 Front Panel
