Measurement-computing USB-2627 Instrukcja Użytkownika Pobierz pdf (Strona 12)

USB-2627 User's Guide Signal Connections

TB2 terminal

SCSI pin

TB1 terminal

SCSI pin

CNT3

XDAC1

TMR0

AGND

TMR1

XAPCR

XDPCR

GND

EGND

SCSI shell

Do not make connections to any terminal labeled NC.

Note 1: Labeled POSREF on the TB-100; not supported on the USB-2627.

Note 2: Labeled NEGREF on the TB-100; not supported on the USB-2627.

40-pin header connectors J2, J4, and J5

The header connectors provide alternative connections to the 68-pin connector. Pins 1, 2, 39, and 40 are labeled

on each connector.

J2 provides analog input connections. J4 provides digital, counter, timer, pacer input, and power output

connections. J5 provides analog output, timer, pacer I/O, and power output connections.

Caution! Avoid redundant connections! Make sure there is no signal conflict between the SCSI connector

pins and header connector pins. Failure to do so could possibly cause equipment damage and/or

personal injury.

Figure 4 shows the pinout for J2.

Figure 4. Header connector J2 pinout

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 28 29

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Measurement-computing USB-2627 Instrukcja Użytkownika Strona 12