Totalizer Test, Terminal Grounded, Decimal Value

Maintenance 7

Performance Tests

Send the command: DIO_LEVELS? <CR>

Verify the returned value is 253.

5. Repeat step 4 for each input and verify the correct returned value (See Table 7-7).

TERMINAL GROUNDED

none

Table 7-7. Digital Input Values

STATE OF DIGITAL INPUTS

inputs 0-7, all HIGH

inputs 1-7 HIGH, input 0 LOW inputs 0,2-7 HIGH, input 1 LOW inputs 0-1 and 3-7 HIGH, input 2 LOW inputs 0-2 and 4-7 HIGH, input 3 LOW inputs 0-3 and 5-7 HIGH, input 4 LOW inputs 0-4 and 6-7 HIGH, input 5 LOW inputs 0-5 and 7 HIGH, input 6 LOW inputs 0-6 HIGH, input 7 LOW

DECIMAL VALUE

255

254

253

251

247

239

223

191

127

Totalizer Test

This totalizer verification test requires toggling the Digital Output line 0 and using it as the Total input. The test requires computer interfacing with a host (terminal or computer). The host must send commands to the 2635A instrument to control the digital line for this test. Refer to Chapter 4 for a description of configuring and operating Hydra Series II.

1.Ensure that communication parameters ( i.e., transmission mode, baud rate, parity, CTS, and echo mode) on Hydra Series II and the host are properly configured to send and receive serial data. Refer to Chapter 4.

2.Switch OFF power to the instrument and disconnect all high voltage inputs.

3.Remove the Digital I/O ten-terminal connector from the rear of the instrument and all external connections to it. Connect short wires (to be used as test leads) to the DIGITAL I/O terminal 0 and the Total (SUM) terminal. Leave other ends of wires unconnected at this time. Reinstall the connector.

4.Switch ON power to both Hydra Series II and the host.

5.Press the Obutton on the front panel of Hydra Series II.

Ensure that Hydra Series II displays a 0 value.

6.Jumper the DIGITAL I/O terminal 0 to the Total (SUM) input by connecting the (SUM) terminal test lead to DIGITAL I/O 0’s test lead.

7.Using either a terminal or a computer running a terminal emulation program, set up Hydra Series II to toggle (turn ON and OFF) Digital Output 0.

In sequence send the following commands to Hydra Series II and ensure that Hydra Series II measures and displays the correct total value:

DO_LEVEL 0,0 <CR> DO_LEVEL 0,1 <CR>

Ensure that Hydra Series II displays a totalizer count of 1.

7-17

2635A specifications

The Fluke 2635A is a highly advanced multichannel data acquisition system designed for engineers and technicians requiring precision and versatility in their measurement tasks. This instrument excels in monitoring and capturing data from various sources, making it a valuable tool in laboratories, production environments, and field applications.

One of the standout features of the Fluke 2635A is its ability to support up to 20 measurement channels. Users can simultaneously monitor multiple signals, which is crucial for complex testing scenarios where numerous variables need to be tracked. The device is equipped with a 6.5-digit precision measurement capability that ensures high accuracy and resolution in readings. This level of precision is particularly beneficial in applications such as environmental monitoring, research and development, and industrial process control.

The unit incorporates a variety of measurement modes, including voltage, current, temperature, and resistance, making it exceptionally versatile. The Fluke 2635A not only handles standard signals but also integrates with various transducers, providing extensive compatibility for users engaged in diverse testing applications.

To enhance data management, the Fluke 2635A offers advanced data logging capabilities. Data can be stored internally or transferred to external devices for further analysis. The internal memory can accommodate extensive datasets, which can be crucial in long-term monitoring tasks. Integration with external software enables users to analyze and visualize data effectively, allowing for informed decision-making based on comprehensive results.

The user interface is designed for ease of use, featuring a large, bright LCD display that clearly presents measurements and status information. The device is also equipped with a simple navigation system, allowing users to switch between channels and measurement types without hassle.

In terms of construction, the Fluke 2635A is built to withstand rigorous environments. It features a robust design that ensures reliability and durability, making it suitable for both laboratory settings and field operations. Furthermore, the device supports a wide temperature range, thus enabling usage in diverse conditions.

Overall, the Fluke 2635A is a powerful and flexible instrument that provides precise measurements across multiple channels, supporting a wide range of applications. Its advanced technology, combined with user-friendly features, makes it an essential tool for professionals in various fields. The combination of accuracy, flexibility, and durability solidifies its standing as a trusted choice for data acquisition and monitoring tasks.

Fluke 2635A Totalizer Test, Terminal Grounded, Digital Input Values, State of Digital Inputs

Models: 2635A