DL-700
VA-700
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Page 13 of 23
Revision 10
CONFIGURATION
The DL-700 is delivered with a jumper from the input to output DIL pads, the amplifier set for 0 dB gain and the
delay trim connected.
Delay lines:
Consult data sheet for selected delay line to obtain pin-out information.
On the DL-700 plug-in module fit delay line(s) with pin 1 to the left for each position.
Wire in delay sections as required starting at the I/P pad and finishing at the O/P pad, using pads connected to the
delay line section(s).
Amplifier:
Select programming resistor R 3 to set gain of amplifier according to the following table:
Gain
R 3 value
0.0 dB
Omitted
1.0 dB
1,400
Ω
1.5 dB
887
Ω
2.0 dB
649
Ω
2.5 dB
499
Ω
3.0 dB
402
Ω
Fine adjustment to the gain should be made using the gain trim control on the supporting VDA.
Variable delay:
To configure the variable delay section, use the link pads located near SK 2.
Enable
:
Connect LK 1 - LK 2 and LK 3 - LK 4.
Disable
:
Connect LK 2- LK 3 and cut links LK 1 - LK 2 and LK 3 - LK 4.
INSTALLATION
VA-700:
On the VA-700 in the plug-in area the following links changes must be made. Remove the link from LK 2 - LK 3, add
links from LK 3- LK 4 and leave the existing link between LK 6 - LK 7.
DL-700:
Ensure that DL 700 is correctly configured as detailed in configuration section.
Carefully position the sub board over the VA-700 ensuring that all pins of PL 2 & PL 3 of the VA-700 slide neatly into
the corresponding socket positions of SK 2 & SK 3 of the DL-700.
Press down firmly and evenly on the DL-700 sub board ensuring that the cut-out in the top left hand corner just
clears the gain potentiometer on the VA-700 as the board slides into place.
Check alignment of the delay trim adjustment capacitor with the hole provided in the front panel of the VA-700
and adjust board position slightly if required.