Measurement-computing WaveBook rev.4.0 Manuel d'utilisateur télécharger pdf (Page 53)

WaveBook User’s Manual

06-08-01

WaveBook Operation Reference 4-7

Digital I/O Connections

Digital I/O Connections for WaveBook/512 and WaveBook/512H

Note: The following pinout can be used for WaveBook/516, providing the unit is in the 8-bit mode (instead of 16-bit).

If using this pinout for WaveBook/516 (in 8-bit mode), pin 20 will be assigned to external clock input.

With the WaveBook/512 series, the following signals are present on the DB25F high-speed digital I/O

connector.

•

8 Digital I/O Lines (D8 – D15)

•

5 Address Lines (A0 –A4)

•

Active-low Digital I/O Enable output (EN-)

•

Active-low Digital I/O Write Strobe (WR-)

•

Active-low Digital I/O Read Strobe (RD-)

•

TTL Trigger Input (TTLTRG)

•

+15 V (pin 23), -15 V (pin 22), 50 mA max. (each)

•

two +5 V power (pins 19 and 21), 250 mA max. (total)

•

three Digital Grounds (pins 20, 24, and 25)

Digital I/O Connections, WaveBook/512

D8-D15 Digital I/O data lines

A0-A4 Digital I/O address lines

EN- Active-low digital I/O enable

RD- Active-low read strobe

WR- Active-low write strobe

TTLTRG TTL trigger input

+5 VDC 250 mA maximum

+15,-15 VDC 50 mA maximum (each)

WaveBook/512, DB25 Pinout

Digital Grounds Pins 20, 24, and 25

To sample just 8 digital input signals, connect them directly to the digital I/O data lines. D15 is the most

significant bit, and D8 is the least. The address lines, the read and write strobes, and enable signal may all

be left disconnected.

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 81 82

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Measurement-computing WaveBook rev.4.0 Manuel d'utilisateur Page 53