Chapter 9 Specifications

Measurement Rates and System Characteristics

Measurement Rates and System Characteristics

Single Channel Measurement Rates [1] [2]

Function

Resolution

Readings/s

DCV, 2-Wire Ohms:

61⁄2 (10 PLC)

6 (5)

 

51⁄2 (1 PLC)

53 (47)

 

41⁄2 (0.02 PLC)

490

Thermocouple:

0.1 °C (1 PLC)

49 (47)

 

(0.02 PLC)

280

RTD, Thermistor:

0.01 °C (10 PLC)

6 (5)

 

0.1 °C (1 PLC)

47 (47)

 

1 °C (0.02 PLC)

280

ACV:

61⁄2 Slow (3 Hz)

0.14

 

61⁄2 Medium (20 Hz)

1

 

61⁄2 Fast (200 Hz)

8

 

61⁄2 [3]

100

Frequency, Period:

61⁄2 Digits (1s gate)

1

 

51⁄2 Digits (100 ms)

9

 

41⁄2 Digits (10 ms)

70

 

 

 

System Speeds [4]

 

 

INTO Memory

 

Ch/s

Single Channel DCV

 

490

34902A Scanning DCV

 

250

34907A Scanning Digital Input

250

34902A Scanning DCV, scaling and 1 alarm fail

220

34907A Scanning Totalize

170

34902A Scanning Temperature

160

34902A Scanning ACV [3]

100

34902A Scanning DCV/Ohms, alternate channels

90

34901A/34908A Scanning DCV

60

INTO and OUT of Memory to GPIB or RS-232 (INIT, FETCh)

34902A Scanning DCV

180

34902A Scanning DCV with Time stamp

150

OUT of Memory to GPIB [5]

 

Readings

800

Readings with Time stamp

450

Readings with all Format Options ON

310

System Characteristics

Scan Triggering

1 to 50,000 or continuous

Scan Count:

Scan Interval:

0 to 99 hours; 1 ms step size

Channel Delay:

0 to 60 seconds/channel; 1 ms step size

External Trig Delay:

< 300 ∝s; With Monitor On, < 200 ms

External Trig Jitter:

< 2 ms

 

 

Alarms

 

Alarm Outputs:

4 TTL compatible. Selectable TTL logic

 

HI or LO on Fail

Latency:

5 ms (typical)

 

 

Memory

Battery Backed, 4 year typical life [6]

Readings:

50,000 readings

Time Stamp Resolution:

 

Relative

1 ms

Absolute

1 s

States:

5 instrument states

Alarm Queue:

Up to 20 events

 

 

General Specifications

100 V / 120 V / 220 V / 240 V ±10%

Power Supply:

Power Line Frequency:

45 Hz to 66 Hz automatically sensed

Power Consumption:

(12 W) 25 VA peak

Operating Environment:

Full accuracy for 0 °C to 55 °C

 

Full accuracy to 80% R.H. at 40 °C

Storage Environment:

-40 °C to 70 °C [6]

Weight (Mainframe):

Net: 3.6 kg (8.0 lbs)

Safety:

Conforms to CSA, UL-1244, IEC 1010 Cat I

RFI and ESD:

CISPR 11, IEC 801/2/3/4

Warranty:

3 years

 

 

[1]Reading speeds for 60 Hz and (50 Hz) operation; autozero OFF

[2]For fixed function and range, readings to memory, scaling and alarms off, autozero OFF

[3]Maximum limit with default settling delays defeated

[4]Speeds are for 41⁄2 digits, delay 0, display off, autozero off. Using 115 kbaud RS-232 setting.

[5]Assumes relative time format (time since start of scan)

[6]Storage at temperatures above 40 °C will decrease battery life

OUT of Memory to RS-232

 

Readings

600

Readings with Time stamp

320

Readings with all Format Options ON

230

DIRECT to GPIB or RS-232

 

Single Channel DCV

440

34902A Scanning DCV

200

Single Channel MEAS DCV 10 or MEAS DCV 1

25

Single Channel MEAS DCV or MEAS OHMS

12

 

 

This ISM device complies with Canadian ICES-001.

Cet appareil ISM est conforme à la norme NMB-001 du Canada.

N10149

408

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Agilent Technologies 34970A manual Measurement Rates and System Characteristics
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34970A specifications

Agilent Technologies 34970A is a versatile data acquisition and measurement system that has gained popularity in various industries, including research and development, manufacturing, and education. The primary purpose of the 34970A is to offer an efficient solution for data collection, monitoring, and analysis, which can significantly enhance productivity and accuracy in testing applications.

One of the main features of the 34970A is its modular design, allowing users to customize the system according to their specific measurement needs. The mainframe can accommodate up to three plug-in measurement modules, which can include various types of measurements such as analog, digital, temperature, and frequency. This modularity provides flexibility for users to tailor the system to their requirements, making it highly adaptable to different applications.

Another notable characteristic of the Agilent 34970A is its impressive channel configuration. The system can support up to 120 measurement channels when fully configured, enabling extensive data acquisition without the need for multiple devices. This capability is essential for applications requiring simultaneous monitoring of multiple parameters or locations.

The 34970A utilizes advanced signal processing technologies to ensure high-accuracy measurements. The internal 6.5-digit resolution multimeter provides precise readings, while the device also supports various input types, such as thermocouples and RTDs for temperature measurements. The ability to perform mathematical functions, such as summation and averaging, on the acquired data further enhances its usability.

For data storage and management, the Agilent 34970A features built-in memory for storing up to 20,000 readings. Users can also easily transfer data to a PC through the RS-232 interface or GPIB (IEEE 488) for further analysis and reporting. Additionally, it offers the capability to program automatic data logging and scheduling of measurements, which streamlines the testing process and reduces manual intervention.

In terms of user interface, the 34970A is equipped with a large graphical display that provides clear visualization of measurement data and easy navigation through settings and options. The menu-driven interface makes it accessible for users of all skill levels, simplifying the setup and operation of the device.

Overall, the Agilent Technologies 34970A stands out for its modularity, high channel capacity, advanced measurement technologies, and user-friendly interface. As a reliable and efficient data acquisition system, it is well-suited for a wide range of applications, making it an essential tool for engineers and technicians looking to enhance measurement precision and efficiency.
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