Kontron PB-DOUT8 - Manual (Page 26)

PB-DOUT8
Page 3 - 4
Installation
22 Oct 98 Man. ID 17984, Rev. Index 0110
3.1.1 Carrier Board VME Bus Connector BU1A/B
The Modpack carrier boards are provided with a three-row 45-pin socket. Some piggy-
back modules, like for instance PB-DOUT8, use only the first two rows (30 pins) of the
header, while other piggybacks, having three-row headers, use also the third row. For
this reason, the first two rows of the connector are named as if they were a separate
socket — “BU1”; the remaining third row instead is called “BU0”.
Figure 3-2: Correct Installation of PB-DOUT8 on the Carrier Board
3.1.2 Carrier Board External Interface Connector BU2A/B
The 26-pin double-row sockets are totally isolated from the remaining circuits of the car-
rier board and only connect the output side of the PB-DOUT8 26-pin output header
directly to the upper or lower half of the carrier board’s 50-way front panel connector.
For a better understanding, an overview of piggyback connection in general to VMOD/
VMOD-2 is given in figure 3-3.
!
Attention!
When installing your PB-DOUT8 on its carrier board, please make
sure the piggyback’s pin rows match with the carrier board’s head-
ers as is shown in the following figure.
X X
BU2 BU1 - 0
ST2 ST1
PB-DOUT8 PB-DOUT8
Carrier Board Carrier Board