Crystal Vision
Hardware installation
TANDEM HD-20 User Manual R1.4
5
24/05/2007
2 Hardware
installation
The TANDEM HD-20 single slot module uses the single height RM33 and dual height RM39
rear connectors that will fit into all Crystal Vision rack frames. All modules can be plugged in
and removed while the frame is powered without damage.
2.1 Module configuration
The TANDEM HD-20 has positions available for mounting three sub-PCBs. Two of these can
be any of the six available audio PCBs. The third position is for the
±
18V regulator needed
when any analogue sub-PCB is fitted.
DcDcV18 Front sub PCB Rear sub PCB
TANDEM HD-20
Link configuration and LEDs
There are five jumper links and three surface-mounted LEDs on the TANDEM HD-20
motherboard. The surface-mounted LEDs are not viewable from the front of the frame and are
included for diagnostic purposes.
Link
Function
PL2, PL3, PL4, PL5, PL6
No user configuration, factory set
LED1 Output
serialiser
locked
LED2
Input deserialiser locked
LED3
Input deserialiser carrier detect
