Drawmer D62 Digital Module - Manual (Page 13)

D62 OPERATORS’ MANUAL 9
CONFIGURATION
Configuration Jumpers:
A simple adjustment of two internal PCB jumpers (one for each channel)
enables the front panel Channel Output Level setting to be passed onto
the Channel Pan control in the Stereo Mix section and therefore onwards
to the Digital Section. The normal and recommended factory setting for
both jumpers is for Stereo Mix Channel Pan to be pre Channel Output
Level control.
It is less desirable option for the Mix section and the Digital Source Chs
(channels) feed to be made post-level control for several reasons:
1) Digital output noise will be increased by 4dB.
2) There is a greater chance of a digital overload, undoing the control and
safety feature of the limiter.
3) Any digital output level will be un-calibrated, unless the channel output
level control is set to the +20dB position.
To perform this change:
1: Disconnect the mains power cable from the unit.
2: With a number 1 pozidrive screwdriver, remove the 8 screws that retain
the top cover. (ie: two on each side; two at the rear and two counter-sunk
screws along the top at the front edge).
3: Locate the jumper blocks referenced as J12.
For channel 1 (left) this is the upper PCB. The jumper is centrally
positioned along the rear edge of the PCB.
For channel 2 (right) this is the lower PCB. Its jumper is central to
the unit, near the small IDC connector for the digital unit.
4: Lift off the shorting jumper block and replace on the centre pin and
previously free pin. In most cases, the jumpers have been replaced by
soldering the pins together.
5: Replace the top cover ensuring the correct screws are used.