Measurement-computing TempScan/1100 Manual de usuario descargar pdf (Pagina 28)

1-14 System Overview 899493 TempScan / MultiScan User's Manual

DB50 Digital I/O Pin Descriptions

Line Pin Line Pin Line Pin Line Pin Line Pin

Output 1 1 Output 11 37 Output 21 24 Output 31 11 Ground 12

Output 2 34 Output 12 21 Output 22 8 Output 32 44 Ground 13

Output 3 18 Output 13 5 Output 23 41 Input 1 15 Ground 14

Output 4 2 Output 14 38 Output 24 25 Input 2 48 Ground 28

Output 5 35 Output 15 22 Output 25 9 Input 3 32 Ground 29

Output 6 19 Output 16 6 Output 26 42 Input 4 16 Ground 30

Output 7 3 Output 17 39 Output 27 26 Input 5 49 Ground 31

Output 8 36 Output 18 23 Output 28 10 Input 6 33 Ground 45

Output 9 20 Output 19 7 Output 29 43 Input 7 17 Ground 46

Output 10 4 Output 20 40 Output 30 27 Input 8 50 Ground 47

Each digital output line will drive five (5) standard TTL (transistor-transistor logic) loads. All digital input

lines are one-eighth (0.125) TTL loads. All inputs are protected against damage from high static voltage.

Normal precautions should be taken to limit the input voltages to the range of 0.0 to 5.3 volts. All digital

I/O lines are referenced to digital ground.

CAUTION

Do not exceed the levels described. Otherwise, the TempScan/1100 or

MultiScan/1200 unit may be damaged in a way that is not covered by the

warranty.

TTL Output & Trigger Input Configuration

The rear panel of the TempScan/1100 or MultiScan/1200 unit also provides two external BNC connectors:

The TTL output and the trigger input. The BNC TTL scan output is used for synchronizing equipment

with TempScan/1100 or MultiScan/1200 acquisition, while the BNC trigger input is used for starting

and/or stopping acquisition of the TTL output. This trigger input can be programmed to activate on a

rising (positive-going) or falling (negative-going) TTL level edge. Any TTL level signal

(> 2.2V = Hi, < 0.8V = Lo) may be used as a trigger pulse. A trigger pulse may also be used to generate a

Service Request. Note that the TTL Out is a LS-TTL compatible output, 0.4 mA sourcing, 8 mA sinking.

When a scan is logged into the acquisition buffer (after the actual scan), the TTL output signal is pulsed for

100 ms. Refer to the timing diagram.

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 305 306

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Measurement-computing TempScan/1100 Manual de usuario Pagina 28