Agilent 34970A
Data Acquisition/Switch Unit Plug-In Modules

Agilent 34901A 20-Channel Armature Multiplexer

• 20 Channels of 300 V Switching

• Two Channels for DC or AC Current Measurements (100 nA to 1 A)

• Built-in Thermocouple Reference Junction

• Switching Speed of Up to 60 Channels Per Second

• Connects to the Internal Multimeter

The Agilent 34901A is the most versatile multiplexer for general purpose scanning. It combines dense, multi-function switching with 60 channel/second scan rates to address a broad spectrum of data acquisition applications.

Two- and four-wire channels can be mixed on the same module. Two additional fused inputs (22 channels total) route up to 1A of current to the internal DMM, allowing ac and dc current measurements without the need for external shunt resistors.

Agilent 34902A 16 Channel Multiplexer (2/4 -wire)

• 16 Channel Multiplexer
• 250 ch/s scanning
• Two- and four-wire scanning
• Built-in thermocouple reference junction

The Agilent 34902A employs reed relays to achieve scan rates up to 250 channels-per-second. Use this module for high-throughput automated test applications as well as high-speed data logging and monitoring tasks.

Sixteen two-wire inputs switch up to 300 V. Two- and four-wire channels may be mixed on the same module. User provided shunt resistors are required for current measurements.

Agilent 34903A 20 Channel Actuator/GP Switch

• 20 Channel Actuator/GP Switch

• SPDT (Form C) latching relays

• 300 V, 1 A actuation and control

This general-purpose switch module has 20 independent single-pole, double-throw (SPDT) relays. Use it to cycle power to products under test, control indicator and status lights, and to actuate external power relays and solenoids. Combine it with matrix and multiplexer modules to build custom switch systems. Its 300 V, 1 A contacts can handle up to 50W, enough for many power line switching applications.

Agilent 34904A 4 X 8 Matrix

• 4 X 8 Matrix Switch

• 32 two-wire crosspoints

• 300V, 1A switching

The Agilent 34904A gives you the most flexible connection path between your device under test and your test equipment, allowing different instruments to be connected to multiple points on your DUT at the same time.

Rows or columns may be connected between multiple modules to build 8x8, 4x16 or larger matrices, with up to 96 crosspoints in a single frame.

Agilent 34905A and Agilent 34906A Dial 4-Channel RF Multiplexers 

Agilent 34907A Multifunction Module

The Agilent 34904A gives you the most flexible connection path between your device under test and your test equipment, allowing different instruments to be connected to multiple points on your DUT at the same time.

Rows or columns may be connected between multiple modules to build 8x8, 4x16 or larger matrices, with up to 96 crosspoints in a single frame.

The Agilent 34906A RF multiplexer offers broadband switching capabilities for high-frequency and pulsed signals. Use it to route test signals between your device under test and your signal generator, oscilloscope, spectrum analyzer, or other instrumentation.

The RF multiplexers are arranged as two independent 1x4 multiplexers, each with a common shield and a switched center conductor. Connections can be made directly to SMB inputs with 2 GHz usable bandwidth, or to the BNC-to-SMB adapters provided with 1 GHz bandwidth. Multiple banks may be cascaded together for applications requiring even larger topologies--create a stubless 16:1 multiplexer in a single frame.

The Agilent 34907A allows great flexibility for a variety of sense and control applications. It combines two 8-bit ports of digital input and output, a 100 kHz gated totalizer, and two ±12 V analog outputs- all on a single earth-referenced module. The digital inputs and totalizer input may be included in a scan. Alarm limits for the digital and event counter inputs are evaluated continuously, capturing and logging alarm conditions even between scans.

Digital Input/Ouput

Use the digital outputs with an external power supply to control microwave switches and attenuators, solenoids, power relays, indicators, and more. Use the digital inputs to sense limit switch and digital bus status. There are no complex handshake modes; reads and writes are initiated either from the front panel or the bus.

Totalize Input

Count events from devices like photo interrupters, limit switches, and Hall-effect sensors.
It keeps an updated total which can be read via the front panel or programmatically at any time. With 26 bits of resolution, it can count events at full speed for nearly 45 minutes without an overflow.

Analog Output

Use the two electronically calibrated analog outputs to source bias voltages to your device under test, to control your analog programmable power supplies, or use the outputs as setpoints for your control systems. The outputs are programmed directly in volts, either from the front panel or from the bus.

Agilent 34908A 40 Channel Single-Ended Multiplexer

• 40 Channel Single-Ended Multiplexer
• 60 ch/s scanning
• Single-wire switching for common-low applications
• Built-in thermocouple reference junction

Use the Agilent 34908A for the greatest density in common-low applications, such as battery test, component characterization, and benchtop testing.

Each module switches 40 one-wire inputs. All two-wire internal measurements except current are supported. The module low connection is isolated from earth and can float up to 300 V.