• Covers 46-870 MHz VHF/UHF and CATV
• Automatic Level Attenuation
• Measures Visual and Aural Carriers
• 8 Internal Channel Tables
• PLL Synthesizer Speeds Timing
• Monitor Outputs for Sound Checks
• Programmable Auto Power Off
• 12 Hours Continuous Battery Operation
• Compact and Less Than 3 lbs. with Batteries

The Model LF941D TV Signal Level Meter enables fast and accurate measurement of VHF/UHF TV and CATV signals. Auto-detection and level measurements of digital broadcast signals or conventional analog broadcast signals ease operation. Digital measurements include over the air 8VSB, OFDM and cable 16-256 QAM modes. Internal channel tables allow operation in 8 different countries. For USA operation, cable channel tables are selectable for standard, HRC and IRC systems.

Ten programmable preset channels are provided to store arbitrary frequencies that are commonly used. Presets can be setup for recall of frequently used frequencies, FM broadcast and pilot signals. The large digital display shows digital or analog mode, visual or sound carrier level readouts and bar-graph level indicator for antenna peaking during installation for accurate, optimized measurements. Automatic power-off is time selectable to save on battery power consumption. Low power consumption yields a continuous 12-hour operation capability from 6 alkaline C cells. This compact & lightweight level meter, under 3 pounds, is supplied with a carrying case and is ideal for VHF/UHF antenna and CATV installations.

Model 4336 CellMite® Quad AC/DC Mixed LVDT and Force Measurement Digital Signal Conditioner

• This product is perfect for geotechnical soil testing among other applications! Versatility in a box!

Features:

• Simultaneous operation of all LVDT and strain gage channels.
• Direct to PC with RS232 Data.
• Data logging with multiple recording profiles.
• Data compatible with Excel.
• Automatic and manual triggering.
• 2-pt, mV/V calibration.
• 6-pt linearization calibration.
• Dual Scalable +/- analog outputs, one for LVDTs and one for strain gages.
• 16-Bit analog output.
• 24-Bit resolution.
• Multiple filter selections
• Storage for 3 calibrated LVDT transducers and 3 calibrated strain gage transducers.
• Selectable sensor gains.
• Remote sense excitation.
• Addressable for serial network.
• Tare, Peak, Valley.
• Unit Support: In, Cm, mm, %, Lb, Kg, N, mV/V, User defined.
• Power supplies internally isolated.
• CellView Multi-Display GUI option.
• CellView Software Drivers option.

CellMite® Digital Signal Conditioner 4336 Specs:

• Excitation:

• LVDT: Voltage: 3kHz, 3Vrms (std). Sensors: LVDT's AC Bridges
• Strain Gage: Voltage: 5VDC. Sensors: 350 ohms Bridge nominal.
• Operation:

• LVDT: Internal Resolution: 24-bit. Input Range: software adjustable from <10mV/V to >100nV/V. Error: 0.05%. Precision Shunt 60K ohms for bridge applications.
• STRAIN GAGE: Internal Resolution: 24-bit. Input Range: +/-5.5mV/V. Error: 0.01%. Precision Shunt 60K ohms.
• Conversion Rate:

• 60/sec single channel
• 1/sec all channels simultaneously
• Data Logging:

• Channels: All, simultaneously.
• Format: Excel compatible file.
• Recording rate: Variable, user selectable.
• Triggering: Manual, automatic, delayed.
• Outputs:

• ANALOG:
• LVDT is 16-bit, Scalable, +/-10V.
• Strain Gage: 16-bit, Scalable, +/-10V.
• SERIAL DATA: Multi-drop RS232, RS485.
• Power: Included Adapter: 5 VDC, 1A, 110/240VAC, 60/50 Hz. Optional Adapter: 12, 24, 48 VDC.
• Mechanical: 7.5" x 5.5" x 1.5". Weight: 1.12 lbs.

General Information on CellMite Digital Signal Conditioners:

The Model 4336 CellMite Quad AC/DC is a 4-channel intelligent digital signal conditioner that connects directly to two AC LVDT transducers and two DC strain gage force transducers and provides direct digital data input into the serial port of a standard PC. Precision AC sine wave excitation voltages to power the LVDT's and precision DC excitation voltages to power the force strain gage bridges are generated by the unit. Internal signal conditioning with filtering is applied to all channels and the digitized data is sent in serial form to a standard PC.

The Model 4336 also simultaneously generates two +/- 10V analog outputs; one that tracks a user selected LVDT channel and one that tracks a user specified force channel. When used in combination with the CellView Multi-Display GUI software, a complete data acquisition system is formed with synchronized data storage of all channels in an Excel compatible file, and real-time simultaneous viewing of all channels utilizing up to 8 user specified software displays.

The Model 4336 CellMite Quad AC/DC independently compensates each channel's transducer nonlinearities using its integrated 6-point calibration capability not found in standard signal conditioners. The unit has full range tare capability for the LVDT and strain gage force channels, and dual internal precision shunt resistors for the force channels.

The Model 4336 features include nonvolatile memory for parameter and calibration storage, the ability to select between 3 stored LVDT calibrations for the two LVDT channels, and the ability to select between 3 stored force transducers for the two strain gage force channels. Also featured are multi-point and mV/V calibration, remote sense excitation, 24-bit internal resolution with 16-bit analog output, and RS232 serial data output that is compatible with off-the-shelf serial to USB converter cables.

CellView Multi-Display Software Features:

• Turnkey simultaneous data acquisition system.
• Supports mix and match usage of LVDT and strain gage channels.
• Ability to define 8 simultaneous data displays from multiple channels.
• Save data, calibration, and sensor test information to Excel spreadsheets.
• Guide user through sensor calibrations.
• Ability to select and name individual LVDT and strain gage channel sets.
• Tare and reset peak and valley for the sensors.
• Save/Load units and sensor setup information.
• Set output data with user defined 5th order polynomial function.
• Setup a test to start and/or stop automatically with user selectable trigger events and delayed triggering.
• Multi sample rate data acquisition via user definable data logging profile.
• Statistics and comments embedded in data log files.
• User programmable analog output voltages for LVDT and strain gage sensor sets.
• Units on In, Cm, mm, %, Lb, Kg, mV/V, and User Defined.

Application Note on Using the CellMite® Quad in a Soil Testing Applicaton.

Check out our complete line of CellMite® Intelligent Digital Signal Conditioners.

The Wireless Automation System 2 DA (WAS2DA) is designed for analog data transfer and simple wireless switching up to 2 miles. WAS2DA is the simple solution for applications where faulty wire replacement or new installation of conduit is not possible or practical. Possible applications include:

· Pump Control

· Flow Rate Monitoring

· Conveyor Control

· Tank Level Monitoring

· Light Control

· Alarm Systems

· PLC Activation

· Data Logging

· Wireless Automation

The WAS2DA includes a transmitter with one discrete digital and one analog data (4 – 20 mA) input and a receiver with one SPDT Class C Relay and one 4 – 20 mA output. Simply make a dry contact closure and analog data connections to the transmitter, connect your discrete and analog outputs from the receiver to your controller or device, and the WAS2DA is ready for use.

The WAS2DA stationary transmitter operates one analog channel and one discrete digital channel at 151 mHz. The analog channel has sample rates from 2 seconds up to 10 minutes, and the discrete digital channel will transmit indefinitely (at the sample rate) while the contact is closed. The WAS2DA receiver will output the state of the discrete digital contact from the transmitter through a relay contact and the 4 – 20 mA signal from the transmitter with 10-bit accuracy. As an added security feature, a 12-position DIP switch allows the user to digitally code the transmission to prevent unwanted reception. Features of the WAS2DA include the following:

• Produced for both analog data transfer and simple switching
• Analog data can be any 4-20mA signal such as temperature, pressure, moisture, etc.
• Simple switching can control relays, motors, pumps, alarms, lights, etc.
• The unique 151 MHz FM radio signal is resistant to noise and not fully restricted by line of sight like higher frequencies
• It simply replaces wire or conduit when new installation is not possible or practical
• Performance is backed by a one-year warranty

ACCES I/O Products announces the immediate release of its newest PC/104 board solution for data acquisition, test and measurement. The high-density Model 104-AIM-32A Kit provides 32 single-ended or 16 differential inputs with flexible gain for use with factory configured options such as conditioning for Thermocouples, RTDs, Bridge type load cells and strain gages, and 4-20mA inputs with fault detection. At under $400, the 104-AIM-32A Kit (signal conditioning mux & A/D board pair) features an excellent price/performance value for temperature control and monitoring, power system data acquisition, environmental monitoring of pH, humidity, pressure, flow and other low-level signal applications.

All sensor signals are conditioned, amplified and calibrated then digitized by an included 12-bit, 8-input A/D Board. Alternately, the 104-AIM-32A can be paired with either a 12-bit or 16-bit I/O board for applications where analog outputs or digital I/O are also needed. Up to eight signal conditioning boards can be stacked together to realize 256 inputs, multiplexed into the eight channels of the A/D board. Multiple calibration constants can be stored onboard for use in widely varying temperature environments.

The 104-AIM-32A standard board set features:

· Software programmable channel by channel input range/gain

· 6 standard analog input ranges

· Filtered, extremely quiet front end populated with low-noise components

· Complete system calibration with easy-to-use utility software

· Reference junction sensor for thermocouple inputs on optional removable screw terminal block

· 8-input, 12-Bit 100KHz analog-to-digital board and cable

· Power requirement: +5V @ 240mA, typical with DC/DC converter

· Complete system, just add a CPU

· Easy to network on 10/100 Base-T Ethernet

· Extended operating temperature range: -40C to +85C

An included free software development kit (SDK) supports analog-to-digital converstions, calibration and digital functions with sample programs and source code in "C" and Pascal for DOS. A graphical setup program makes installation easy. Linux support consists of "C" samples for register-level programming. Full Windows support, samples and drivers are provided for register-level access to the board's features. Networking examples are also provided.

The CP266 is a single-width, 6U, CompactPCI module with 32 or 64, 16-bit analog output channels. These independent analog channels provide ±10 V full-scale outputs. The channel update rate is 2ms, and each output is accurate to ±1mV. The power-up state of the analog outputs can be set to indepedent user-defi ned values. Paired output signals are provided to eliminate ground offset effects. The analog outputs are available at a single 68-pin SCSI II shielded connector (32-channel option) or a pair of 68-pin SCSI II shielded connectors (64-channel option).

Data values for each channel are written to a 16-bit wide, dual-port memory. This memory is sequentially scanned, and the values are applied to a single 16-bit digital-to-analog converter. The DAC output is then multiplexed to separate high precision sample-and-hold circuits (one for each channel), and the outputs of these circuits pass through active, 2-pole, low-pass Bessel fi lters before being brought to the front panel connector(s). Bessel filters are provided because of their optimum step response. The nominal cutoff frequency of each filter is set at 500Hz. Since the voltage outputs of all circuits are accurate to within 1mV of each other, only one offset and one gain potentiometer are needed to adjust the DAC. Data can be written to or read from the CP266 in either offset binary or two's complement format. During power-on, the module initiates a sequence to restore the memory contents to user-defined values or to the zero default.

The CP266 comes with a Plug and Play driver for confi guring and using the device and application examples to illustrate its basic functionality.

This and other tools, including their source code, are provided.

What We Do

Invisar designs and deploys test systems geared to the specialized needs of electronics, electro-mechanical, and other complex equipment manufacturers; providing them high-performance production testing, process monitoring, and product development tools and solutions.

Invisar also designs and develops custom equipment and instrumentation for laboratories, research facilities and other discerning users.

Capabilities and Services

• Hardware, software and system integration.
• Design, laboratory and/or production testing.
• Functional test and data acquisition solutions:

• Development and deployment of test systems and software.
• Data collection, analysis, presentation and storage.
• Mixed-signal applications - design and test applications requiring high-performance, tightly synchronized analog and digital signal generation and acquisition.
• Instrument control and communication - integrate high performance and precision test and measurement instruments. GPIB, USB, serial and Ethernet instrument control.
• Engineering and custom design - signal conditioning solutions, electronic (analog and digital) and electrical interfaces, data communication, embedded software, and mechanical.
• Electromechanical systems comprising complex and intricate mechanisms and their associated electronics, sensors and software control.
• Design and development of custom and specialized instrumentation.
• Test, measurement, and automation solutions specializing in National Instruments' hardware and software platforms: LabVIEW, PXI, CompactRIO, LabVIEW Real-Time, LabWindows/CVI and TestStand.
• PC-based automation: Human Machine Interfaces (HMI), Supervisory Control and Data Acquisition System (SCADA), and distributed I/O.
• Networking solutions for remote management and control.
• Motion, actuator, and motor control applications.
• Vision and optical inspection applications.
• Experienced project management and complete turn-key solutions.
• Requirements specification: elaboration, expansion, and translation of the need into engineering terms.