Signal Generation and Analysis Modules

Mô tả

The 7048 is a synthesised RF signal generator module that incorporate the essential features required for most development, test and service work, including high frequency accuracy and stability, wide dynamic range, low phase noise and leakage, and flexible modulation capabilities.

The 7048 covers from 150kHz up to 2GHz and incorporates AM, FM and Phase modulation (internal and external). The wide frequency range and comprehensive modulation capabilities make it suitable for most tasks within the 2GHz spectrum. The generator can be operated using either numeric or rotary controls, and can be remotely controlled via an RS-232 interface positioned on the rear of the CalBench console.

High Precision and Stability
The 7048 uses a fully synthesised source locked to a temperature compensated crystal oscillator. This provides excellent signal frequency stability against temperature and ageing. The 7048 adds the further capability of locking to an external 10MHz source. The frequency can be set to a resolution of 10Hz across the whole frequency range. Frequency steps can be set to any value and stepping can be done with up/down keys or the rotary encoder. The frequency stepping system makes operations such as precise amplitude response characterisation particularly easy.

Wide Amplitude Range & Low Leakage
The 7048 provides an amplitude range of -127dBm to +7dBm (0.1μV to 500mV into 50Ω). Setting resolution is 0.1dBm or 0.01μV. Output level steps can be set anywhere between 0.1dBm and 100dBm (or 0.01μV to 100mV depending on the entry mode). Stepping the level is useful for quick assessment of circuit linearity and dynamic range for instance.The advanced attenuator design provide excellent flatness over the whole frequency range. Meticulous internal screening provides very low output leakage enabling accurate low level measurements in sensitive circuits such as receivers.

Ease of use
The 7048 incorporates a simple and straightforward user interface. The back-lit four line display shows all the major signal parameters simultaneously. Data can be entered numerically using 0 – 9 keys or can be incremented/decremented using up/down keys or the rotary encoder. Both frequency and output level can be adjusted in steps of user programmed size. Output level can be set either in dBm or linear units of μV or mV. A single button press will translate from one to the other.The 7048 can store nine full instrument set-ups in non-volatile memory. This allows repetitive testing procedures to be undertaken quickly and accurately.

Full remote control
The 7048 provides full remote control facilities for all its functions using an RS-232 interface on the rear of the bench console.

Comprehensive Modulation
The 7048 offers AM, FM and Phase modulation using either an internal or external source. Wide modulation range and low distortion make the 7048 suitable for most modulated signal test procedures.

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