Bnc 1201 - 6 1/2 Digit Digital Multimeter Manual do Utilizador descarregar pdf (Página 111)

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5 Remote Interface Operations

1201 supports two remote interfaces: the built-in USB and optional GPIB

(IEEE-488). With GPIB, you will need a GPIB interface card. This chapter

lists the SCPI (Standard Commands for Programmable Instrument)

commands available to control the multimeter. For the first time to use

SCPI, users would better to refer to Appendix B. for SCPI reference.

5.1 Pass/Fail Output From USB Connector

The USB connector on the rear panel of 1201 is a series “B” connector.

When the USB interface is disabled (IEEE-488 interface is selected), the

internal pass and fail TTL output signals (limit testing) will be connected

to the USB connector.

The pass and fail signals are low true and indicate the Math Pass/Fail

Limit Test result for the next reading to be output to the GPIB interface.

The signals are active low for approximately 2ms (



100



sec) for each

reading taken. Figure 2-17 shows the USB connector (series “B”).

Figure 2-17

Contact Signal Name Typical Wiring Description

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 176 177

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