MRC:
Indicates the type of test for which the item is designed.AQXY
Test Type For Which Designed:
Dynamic test of power supply biasoscillator output voltages; power supply bias oscillator changeover; frequency response test of recording amplifiers ; freq response test of monitor amplifier
MRC:
The testing functions such as range,sensitivity,output,and the like,for which the item is designed.AQXZ
Operating Test Capability:
Amplifier, 6 v ac, porm 10 pct. 60 cps, heater voltage 5 v 20 kc, erase voltage 2 v 20 kc, bias voltage 265 v dc plate voltage test signals, 100, 200, 400, 500, 1000, 1500, 2000, 3000, and 4000 cps