Data Logging Feature Checklist - Agilent Technologies 34970A Manual

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Table Of Contents

Table of Contents

And the 34970A measures and converts

11 different input signals:

• temperature with thermocouples, RTDs,

and thermistors

• dc and ac volts

• 2- and 4-wire resistance

• frequency and period

• dc and ac current

What's more, each channel is independently config-

urable. This means you can configure channel 1

for dcV, channel 2 for a K-type thermocouple, and

channels 3 and 13 for a 4-wire RTD measurement—

all on the same module, all in a single scan. For

custom linear conversions, use the Mx+B scaling

function on any channel. You can even display a

custom 3-character engineering label like RPM or

PSI to identify your measurement units.

Versatile alarms

Alarms are available on a per-channel basis as

well. Enter a high limit, a low limit, or both. The

34970A compares each reading to its limits and

flags any out-of-range measurements. You can

assign one of four TTL alarm outputs to any input

channel to trigger external alarm lights, sirens,

or send a TTL pulse to your control system, all

without a PC connected.

Scanning made simple

The 34970A automatically builds a scan list that

includes all configured inputs (even digital inputs

from the Agilent 34907A multifunction module) in

ascending order by channel number. You can pace

scans by setting the 34970A's internal timer for

automatic scanning at a specific interval, by manu-

ally pressing a front-panel button, or by sending a

software command or external TTL trigger pulse.

Monitor any input

A special display mode monitors a selected input

channel, continuously updating the display with

new readings—even during a scan. It's great for

keeping an eye on a key input, or for troubleshoot-

ing your system before a test.

Nonvolatile memory adds convenience, portability

All readings are automatically time-stamped and

stored in a nonvolatile 50,000-reading memory—

enough memory to hold more than a week's worth

of data (20 channels scanned every five minutes).

The nonvolatile memory holds your data even after

power is removed, so you can use the 34970A to

collect data at a remote location for later upload-

ing to a PC. And because the nonvolatile memory

also holds your system configuration, if you lose

power in the middle of a test, the 34970A resumes

scanning when power is returned.