Kontron 104-AD128, User Manual

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4-4
104-ADIO128 (AD128) User’s Guide
Pins 5, 11, and 17 are the counter outputs and can not tri-state.
Either TTL or CMOS signal levels are acceptable at all inputs. The clock signal for counter One (pin
5) is a CMOS output.
As an option, connectors P1 and P2 may be combined into one 50 pin connector. To locate a
specific pin, hold the card in front of you with the PC/104 connector closest to you. P1 and P2
are on the left side. P2 is furthest away from you and pin 1 is on the bottom row, furthest away
from you. P1 starts where P2 ends (P2 is the A/D inputs and has 34 pins). P1 is the closest to you
and pin 1 is on the bottom row. See also the next page for the pinout of P2.
Table 4-2. P3, DAC Connector Pin Assignments
Each DAC output can drive up to ±10mA. Due to a limitation of the power supply, the total drive
of these four signals should be kept below 20mA. If ±12V power is supplied at the ISA bus
connectors or at P6, there isn’t a cumulative drive current limit.
Each DAC output has three configuration jumpers. If the jumper labeled ‘DAC x 5V’ (where x is
either A, B, C, or D) is in place, the range is limited toz 5V (0-5V or ±5V). If the jumper labeled
‘UNIPOLAR’ is in place the range is limited to 0-5V or 0-10V. If the jumper labeled ‘BIPOLAR’ is in
place the range is either ±5V or ±10V. Note that ‘UNIPOLAR’ and ‘BIPOLAR’ are mutually
exclusive.
Pin Pin Assignment
Pin 1 Ground
Pin 2 DAC A Output
Pin 3 Ground
Pin 4 DAC B Output
Pin 5 Ground
Pin 6 4.096V Reference Output
Pin 7 Ground
Pin 8 DAC C Output
Pin 9 Ground
Pin 10 DAC D Output