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Appendix D -- I/O Connections for the PCI4 -- Miscellaneous I/O Connector
Miscellaneous I/O Connector
This connector contains a number of chassis ground related signals. It is the miniature 15 pin female D shaped
connector on the PCI4 Controller Card. Be careful, the ground on this connector is not the PCI4 floating
ground. Connecting the two grounds may lead to problems if you are using the PCI4 in a floating mode.
The auxiliary analog output, derived from a D/A converter, is on this connector. The scaling is normally 2.5 mV
per bit, for a ± 5 volt full scale range. These ranges can be altered via the AUXDACRES field in the
"GAMRY5.INI" file.
The pin out of this connector is shown in Table D-3.
Pin
Name
1
Analog Output Low
2
Analog Output High
3
Sync In
4
Sync Out
5
No connection
6
Ground
7
Digital Out 0
8
Digital Out 1
9
Digital Out 2
10
Digital Out 3
11
Digital In 0
12
Digital In 1
13
Digital In 2
14
Digital In 3
15
+5 Volts
Table D-3
Miscellaneous I/O Connector
Use
The auxiliary output ground connection.
The auxiliary output signal.
Used in slave mode – starts data acquisition
2.2 kΩ input impedance
A 125 nsec TTL pulse output before the start of a data point
330 Ω output impedance
No connection
Digital ground
A TTL digital output- 330 Ω output impedance
A TTL digital output- 330Ω output impedance
A TTL digital output- 330Ω output impedance
A TTL digital output- 330Ω output impedance
A TTL digital input- 2.2 kΩ input impedance
A TTL digital input- 2.2 kΩ input impedance
A TTL digital input- 2.2 kΩ input impedance
A TTL digital input- 2.2 kΩ input impedance
Power- 100 mA maximum current
6-14
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