44. PILOT AND CLAPPER INPUTS:
1. Ground
2. CLAPPER: Clapper oscillator control input (control voltage + 4 to
+ 14 V) or switching on of QRR receiver by connecting to ground.
3. XTAL: Internal crystal pilot generator output, 50/60 Hz.
4. PILOT IN: Pilot signal input, impedance 5 kΩ. Input level 0.5 –
25 V.
45. LINE OUTPUT
The line output of the Nagra 4.2 is on the right–hand side of the recorder. The load impedance should be
equal to or greater than 600 Ω. When the "LINE AND PHONES" switch is in the position "TAPE", the line out-
put voltage is 4.4 V into 600 Ω while playing back a tape recorded at 0 dB. The Nagra 4.2 can record at a
level 4 dB higher than this, thus the maximum line output voltage will be 7 V. Unloaded, these voltages will
be 10% greater. The line output uses two 4 mm banana sockets. It is the secondary of a transformer and is
floating. A banana socket connected to the chassis is available beside the line output sockets.
46. GROUND (banana socket)
47. LOUDSPEAKER
49 51 50 47 48 45 46 44 50
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