Baseband Studio N5102A Digital Signal Interface Module
技术概述
Flexible Digital Test Stimulus
The N5102A Baseband Studio digital signal interface module provides fast and flexible digital inputs or outputs for your E4438C ESG or E8267C PSG vector signal generator. In output mode, you can deliver realistic complex-modulated signals such as W-CDMA, 1xEV-DV, custom pulses, WLAN, TDMA and many others directly to your digital transceivers, components and subsystems. In the input mode, the interface module matches your digital input to the signal generator’s baseband system, providing a flexible and calibrated way of upconverting to analog IF, RF or uW frequencies. The interface module adapts to your device with a wide variety of data formats, clock features, and signaling. With its selection of logic types and connector types, the interface module connects easily into your test system, in most cases eliminating the need for custom fixtures.
The digital signal interface module is just one of several Baseband Studio products. Keysight Technologies, Inc. Baseband Studio is a suite of baseband signal applications and accessories for the ESG and PSG vector signal generators that enhance Keysight's signal creation and signal generation tool set. For more details, see Additional Resources on page 8.
Key features
- Provides either digital inputs or digital outputs
- Flexible data formatsVariable 4 to 16 bit words on dual 16 bit buses
- Serial, parallel, and parallel interleaved (DDR)
- 2’s complement and binary offset numbering
- Selectable MSB or LSB
- Digital IQ or digital IF1
- Flexible clockingUp to 400 MHz in serial mode, 100 MHz in parallel mode
- Provision for internal, external, or device clocking
- Independent data input and output rates
- Adjustable clock phase and skew
- Up to four clocks per sample2
- Flexible signal interfaceLow voltage TTL, CMOS (1.5 V, 1.8 V, 2.5 V, 3.3 V) and LVDS
- Single cable connects signal generator and interface module
- Interchangeable break-out boards simplify device connection
- Simple user interface
Overcome Digital Design Challenges
Today’s shortened design cycles leave little tolerance for empirical test and redesign. At the same time, every new project brings its own demands for different types of baseband devices with different operating parameters. Sharing common test signals between baseband and RF designers reduces the possibility of errors, and having a configurable device interface reduces the time spent developing custom fixtures.
Until now, you could only overcome one of these challenges at a time. Pattern generators provide flexible physical interfaces, but require you to create your own complex test signals. Signal generators and baseband products provide flexible, dependable IP, but require you to design your own physical interface.
With the Baseband Studio digital signal interface module, engineers in the RF and digital baseband design groups can share the same real-world signals to test transceiver performance or verify control algorithms. This allows test of early-stage digital components and subsystems, saving the time and expense of waiting for the design cycles to merge.
Bit Level Access to Keysight’s aseband Signals
In the output mode you get bit-level access to the entire set of complex test signals available in the high performance E4438C ESG and E8267C PSG vector signal generators. The ESG and PSG generate signals that simulate wireless communications, radar, or other real-world transmissions, and the interface module delivers the test signals to the device-under-test (DUT) as digital I/Q or digital IF data.
In the input mode, the module enables direct digital IQ input from your device into the ESG or PSG for upconversion to the desired RF or microwave frequencies. Your transmitter design can be realized by using the vector signal generator’s fully calibrated RF path to substitute for your own RF section. This allows you to test your digital baseband subsystem without waiting for the RF section to be completed.