11
INSTALLING ADDITIONAL I/O CARDS
ADA 24/96 Bypass or Mute mode
In ”Power Off” mode the DB-8 with ADA 24/96 cards
installed can work in two different ways. Either the Output
can be muted or the Input can be bypassed directly to the
Output. The default setting is “Bypass to Output mode”.
To switch between these modes you must remove the
ADA cards metal shield.
• Power off DB-8.
• To minimize the static potentials that can cause damage
to the electronic circuits, you should observe precaution
ary grounding techniques such as touching a grounded
DB-8 Mainframe immediately before inserting/
removing modules.
• Remove the ADA card carefully.
• Remove the cover off the card by loosening the 4 Allen
head screws on the metal shield, and the 2 pozi drive
screws next to the busconnector.
• For MUTE mode place the jumpers on the four pins
away from cut-off corner of the pinheader block.
(see fig. 1 - pinheader block marked with frame)
• For BYPASS mode place the jumpers on the four pins
closest to the cut-off corner of pinheader block.
(see fig. 2 - pinheader block marked with frame)
• Remount metal shield and install the card in the
mainframe to finish operation.
Fig 1
Fig 2
