Tube Tech LCA 2B Dual Channel Tube VCA Compressor - Manual (Page 5)

LYDKRAFT ApS
Mose Allé 20, DK-2610 Rødovre
Denmark
5
ADJUSTMENT OF DISPLAY:
1) Turn the THRESHOLD-control for the compressor and limiter fully
counter-clockwise.
2) Apply a DC-voltage of +5,000 V into the sidechain jack socket (tip).
3) Set the LINK-switch at LINK 1 and observe that the -15 LED just turns off and
the -20 LED is on.
4) If this is not the case, adjust P8 (P108) at the sidechain PCB.
TEST OF TRACKING:
1) Turn the THRESHOLD-control for the compressor and limiter fully
counter-clockwise.
2) Apply a signal of 0,0dBU, 1 kHz to the input of the compressor.
3) Adjust the GAIN-control to an output-reading of 0,0dBU.
4) Apply a DC-voltage of +1.750 V into the sidechain jack socket (tip).
5) Set the LINK-switch at LINK 1 and observe that the output level has dropped to
within -7,0dBU and -9,0dBU. If this is not the case, the VCA tube shall be
rejected and replaced with a new one.
(940530)