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Cassini isn’t just modular instruments, it’s a modular architecture and there’s a difference. Test Instrument Modules (TIMs) provide the building blocks for a configurable microwave system with resource ports designed to integrate seamlessly, creating a flexible instrument architecture. This gives Cassini drop in measurement capability and frequency extension as well as instant multi-site expansion with all the DC, mixed signal, and communication pins that an IC might need.

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Source Icon


Precision microwave signal delivery. Continuous wave signals from 100MHz to 20GHz. Modulated sources from 10kHz to 6GHz carrier with 20MHz baseband.

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RI7725 20 GHz Source


100kHz to 20GHz

Sinewave Source

Low Phase Noise

RI8508 6 GHz RF Source


100kHz to 6GHz

2 RF Outputs

Modulated Output

RI8595 6 GHz Power Amplifier


Power Amplification to 20 Watts

700kHz to 6GHz

P1dB exceeds 10 Watts

Power Accuracy ±1 dB

Combiners Icon

Signal Combination

These instruments extend the capability of microwave sources by providing signal routing and signal conditioning features. Two input sources can be routed out of 4 different outputs for increased port efficiency. Built-in step attenuators and amplifications extends the dynamic range of traditional sources providing 150dB of adjustable dynamic range. Precision microwave combiners enable two-tone signal delivery for high performance intermodulation and linearity test setups.

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RI8577 20 GHz Combiner


100kHz to 20GHz

2-Tone Signal Routing

2 Step Attenuators

2 Low Noise Amplifiers

RI8605 Source Switch


100kHz to 20GHz

2 RF Input Ports

8 RF Outut Ports

2 Low Noise Amplifiers

Receiver Icon


The hub for all measurements on Cassini, the synchrodoyne vector receiver provides two direct measure ports for 100MHz to 20GHz signals and a dedicated low frequency port for signals from 100kHz to 2GHz. The local oscillator can be shared with up to three different frequency converting testsets along with their corresponding downconverted IF signals to provide cross-instrument, phase-coherent measurements. Learn More »

RI8587 20 GHz TestSet


100kHz to 20GHz

2 RF Inputs

3 Baseband Inputs

Continuous & Pulsed with DSP

Reference LO Routing

RI8587 12 GHz TestSet


100kHz to 12GHz

2 Vector Tx/Rx Ports

Internal LO and IF Out

Continuous & Pulsed with DSP

Noise Figure up to 12 GHz

RI8545 20 GHz TestSet


Phase Noise up to 16GHz

50 kHz to 2 MHz Offset

FM Sideband Measure

Parametric Supply/Measure

16-bit Frequency Counter

Testset Icon

Test Sets

Cassini Test Sets integrate with the RF System Core to extend source and vector receiver test ports. These specialized front-ends provide path switching, signal conditioning, source combining, and frequency conversion for single insertion intermodulation, linearity, VNA, spectrum analysis, noise figure and power meter test.

RI8545 20 GHz TestSet


100kHz to 20GHz

4 Vector Tx/Rx Ports

3 Source Inputs

Continuous & Pulsed

Noise Figure up to 20 GHz

RI8563 40 GHz TestSet


4GHz to 40GHz

1 Vector Tx/Rx, 1 Scalar Rx

1 Source Input

Continuous & Pulsed


RI8580 60 GHz TestSet


57GHz to 71GHz

1 Vector Tx/Rx, 1 Scalar Rx

1 Source Input

Continuous & Pulsed


RI8604 60 GHz TestSet


71GHz to 86GHz

1 Vector Tx/Rx, 1 Scalar Rx

2 Source Inputs

Continuous & Pulsed


DC Icon


These multi-instrument units provide direct current and voltage supplies, high-power pulse generation and capture, and parametric measurement capability.

RI8546 Device Power


2 x 3A High Power Supplies

8 x 200 mA Supplies

16 Static Digital with Parametric Measure

8 Precision Voltage Measure Inputs

Protocol-Aware Pin Logic

RI8589 Fet Pulser


DC Parametric Measure & High Power Supply

High Power Polarity Switching

10μs Burst, 1kW High Power Pulse

I8 Control Pins for External Relays

Continuous & Pulsed with DSP

Noise Figure up to 12 GHz

Digital and Mixed Signal Icon

Digital & Mixed Signal

These instruments provide dedicated Analog and Digital I/O resources.
Digital: Protocol-Aware communication, pattern generation, SCAN, logic analysis, contiuity testing
Analog: arbitrary baseband waveform generation, ultra low noise clock, high-speed digitizers

RI8535 Universal Digital


Device Control with Digital Protocol Engines

Pattern Import and Logic Analysis Tools

Pattern Generation on the Fly

Parametric Supply/Measure

Native JTAG Support for SCAN

RI8594 Waveform/Measure and Low Noise Clock



Arb Waveform Generator

Sine Wave Generator

Low Noise Clock