25 Chapter 3
3.2.6 Ext. trigger and Counter Gate 0 Control (JP5)JP5 has two jumpers. The upper jumper selects the card's A/D trigger
source when you use external triggering. The lower jumper selects the
gate control for counter 0 of the card's 8254 timer/counter.
3.2.7 Digital Output, 20-pin or 37-pin Connector (JP1)The PCI-1718 cards’ JP1 switch digital output channels 0 to 3 between
the card's 20-pin connector and 37-pin connector. If you set the jumpers
to the left (D) side, the digital output signals will come out on connector
CN1 (20-pin). If you set the jumpers to the right (S) side, the output sig-
nals will come out on connector CN3 (37-pin).
These four digital output signals select the analog input channel when
you use a multiplexer/amplifier daughter board. Daughter boards with a
DB-37 connector, such as the PCLD-789D, read the digital output signals
from the DB-37 connector (CN3). With other daughter boards you will
need to connect an external 20-pin flat cable from CN1 to the daughter
board.
Table 3.6: Summary of Jumper Settings
Jumper Function description
JP5
(Upper)
G0 (default)
DI2
JP5
(Lower)
Ext. (default)
DI0