Measurement-computing WaveBook rev.4.0 Manual de usuario Pagina 54

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4-8 WaveBook Operation Reference
06-08-01
WaveBook Users Manual
Digital I/O Connections for WaveBook/516
(16-bit mode*)
With the WaveBook/516 series, the following signals are present on the DB25F high-speed digital I/O
connector.
16 High-Speed Digital I/O Lines (D0 through D15)
TTL Trigger Input (TTLTRG)
+15 V (pin 23), -15 V (pin 22), 50 mA max. (each)
two +5 V (pin 19 and pin 21), 250 mA max. (total)
External Clock (pin 20)
two Digital Grounds (pins 24 and 25)
To sample just 16 digital input signals, connect them directly to the digital I/O data lines.
D15 is the most significant bit, and D0 is the least.
*Note: For 8-bit mode, refer to the WaveBook/512 pinout,
with noted exception that in WaveBook/516 applications
pin 20 is for an external clock.
The following figure depicts WaveBook/516s Front Panel, showing the DB25 connector and cable for
External Clock and TTL External Trigger.
Digital I/O Connections, WaveBook/516
D0 D15 High Speed Digital I/O data lines
TTLTRG TTL trigger input
External Clock 16 bit mode, read/write strobe
+5 VDC 250 mA maximum
+15,-15 VDC 50 mA maximum (each)
WaveBook/516, DB25 Pinout
Digital Grounds Pins 24 and25
WaveBook/516 with Optional Clock and External Trigger Cable (CA-178)
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