Nagra PORTABLE ANALOGUE AUDIO TAPE RECORDER Instruction Manual - page 15

The two rollers can be replaced by either the QTIM or QLEN tape measuring rollers. The QTIM is 

supplied in the place of the take-up reel tension roller as standard equipment. QLEN instead of 

QTIM is optional. (To be stated when ordering). 

26. ERASE HEAD 

This is a full track erase head. 

27. STROBOSCOPE ROLLER 

This roller comes in two versions: 50 Hz (CCIR machines) and 60 Hz (NAB machines). Using this 

roller, it is possible to check that the machine is running at the correct speed, either in record or 

playback. This works at all speeds and uses the stroboscopic effect whenever a mains powered 

lamp is shone upon it. When at the correct speed, the bars on the roller should appear stationary. 

28. RECORDING HEAD 

Audio recording head. 

29. PILOT HEAD 

Neopilot head used for both recording and playback of pilot signals. 

30. PLAYBACK HEAD 

Audio playback head.  

31. CAPSTAN SHAFT 

Tape main drive. 

32. PINCH WHEEL AND TAPE GUIDE CONTROL LEVER 

This lever engages and disengages the tape from the heads and motor capstan shaft. It also moves 

the stroboscope roller and mobile tape guide in and out, to allow easy loading of the tape.  

When it is in the open position, rapid rewinding is possible. (This lever should never be left in the 

open position for long periods of time as this may cause a "FLAT" on the capstan shaft "O" ring).  

33. TAPE TENSION ROLLER (OR TIMER) (see 25) 

34. TAKE-UP REEL (see 24)  

Positions 36 To 49 see CONNECTORS