INDEX (cont ) 

 (Numbers refer to paragraphs) 



Maintenance: 116 



preventive s 118-120 

 Mirrophone: See Magnetic Tape 



Recorder 

 "Mirrophone": 81-85 

 Monitor Amplifier: 29-33 



location: 29 



volume control: 29 



fuse: 30 



schematic? Fig 45 



gain and output: 31 



tube complement: 32 

 Operator's Duties: 116,11? 

 Oscillator, 3 kc: 25 

 Oscilloscope: 19 

 Performance Tests: 2-3, 119 



amplifier channels: 7-12, 17 



monitor amplifier: 32 



channel noise: 32 



graphic level recorders: 58,59 



magnetic tape recorders: 91-92 

 PL Recorders: See Graphic Level 



Recorders 

 120B Preamplifier: See 120B 



Amplifier 

 Preliminary Alignment; 2-3 

 Preventive Maintenance? 118-120 



Scope: 1 



Selenium Rectifier: 22,23 



Self -noise Measurements: 



terminating resistor for: 6 



in 121A Amplifier: 7,8 



in 120B amplifier: 9,10 

 Shot Arrival Time Evaluator: 108-114 



purpose: 108 



description: 109 



cursor: 110 



inserting tape: 112 



reading: 113-114 

 Signal Generator? 



method of connecting: 6 ■ 

 Time Indexing Mechanism: 67-76 

 Time-Tick Pulse Amplifier? 25 - 

 Time Tone Amplifier: 24-28 



description: 24-25 



schematic: Figo 43 



servicing; 26-28 



tube complement: 26 



power supply? 27 



fuses for power supply? 28 

 USL Report No, 55? 1,2,115 

 "Weekly Tests? 119 

 618B W.E. Input Transformer (T-101); II 



