TL Audio VTC User Manual
Page 52

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5. Calibration Procedure. 
 
 
For the first channel installed: 
 
1. 
+4dBu 1KHz tone to LINE input, Gain @ 0dB, Channel Fader @ 0dB.
BUSS switch off, EQ off.
Trim Channel Valve for +4dBu @ DIR OUT.
 
2. 
Route to all Groups and L/R. Group and L/R Faders to 0dB.
 
 
a): With Channel Pan fully left, trim Group 1/3/5/7 and L Valves for +4dB at
their respective OUTPUTS.
 
 
Trim 1/3/5/7 and L METERS for 0VU.
b): With Channel Pan fully right, trim Group 2/4/6/8 and R Valves for +4dB
at their respective OUTPUTS.
 
 
Trim 2/4/6/8 and R METERS for 0VU.
 
3. 
MIXB SOURCE to Channel, MIXB Master to 0dB, MIXB routed to L/R.
 
 
a):
With MIXB Pan fully left, trim BL Valve for +4dBu at MIXB L OUT.
Check +4dB at L OUT.
 
 
b):
With MIXB Pan fully right, trim BR Valve for +4dBu at MIXB R OUT.
Check +4dB at R OUT.
 
4. 
MIXB SOURCE to MON. Input to MON, Mon Gain @ 0dB.
 
 
Trim Mon Valve for +4dBu at MIXB R OUT.
 
 
Subsequent Channels: 
 
1. 
+4dBu 1KHz tone to LINE input, Gain @ 0dB, Channel Fader @ 0dB.
Trim Channel Valve for +4dBu @ DIR OUT.
 
2. 
MIXB SOURCE to MON. Input to MON, Mon Gain @ 0dB, MIXB Pan fully
right,
 
 
Trim Mon Valve for +4dBu at MIXB R OUT.
 
 
 
 
 
 
 
 
 
