Signal craft MODULAR INSTRUMENTS SC2250

Description

Typical Applications

• Harmonic level measurements to 18 GHz in production test
• Intermediate Frequency Interface for 5G Research and Development
• 802.11ax (U-NII-5 5925-6425 MHz, U-NII-6 6425-6525 MHz, U-NII-7 6525-6875 MHz, U-NII-8 6875-7125 MHz) testing on legacy 6 GHz Instruments

Both up- and down-conversion functions are housed in a single-slot PXIe module. An independent local oscillator (LO) is available for each block. Optional LO input ports are provided to support measurements requiring extremely low phase noise performance.

The down-converter includes a bypass path to minimize cable swapping when the mixer is not required. The bypass path includes a user-selectable filter bank and low noise amplifier for signal conditioning purposes. For harmonic measurement applications, a bank of high pass filters (HPF) is available to reject the fundamental signal and provide better dynamic range. The down-converted signal is passed through 5GHz intermediate frequency (IF) filter for spurious rejection prior to output from the module.

Like its counterpart, the up-conversion path includes bypass capability and several signal conditioning options. Self calibration of the instrument is possible using the built-in loop back signal in the up-converter.

FEATURES:

General

• General purpose Up/Down Conversion functions
• Single-Slot 3U PXIe Module
• Operating Conditions: 15 to 45 C

Rx Down-Conversion Path

• Input Frequency: 6 – 18 GHz
• Output center frequency: 5.1 GHz
• Maximum Input Power: +20 dBm
• Maximum Harmonic Input Power: -25 dBc
• Instrument Generated Harmonic Distortion (@20 dBm):
  • 2nd: -80 dBc
  • 3rd: -75 dBc
• IF Filter Bandwidth: 200 or 1500 MHz
• Calibrated Amplitude Accuracy: 1 dB
• Noise Figure @6 GHz:
  • 11 dB with Pre-Amplifier
  • 25 dB without Pre-Amplifier
• Noise Figure @18 GHz:
  • 21 dB with Pre-Amplifier
  • 36 dB without Pre-Amplifier
• Gain (@6 GHz):
  • 5 dB with Pre-Amplifier
  • -11 dB without Pre-Amplifier
• Gain (@18 GHz):
  • 17 dB with Pre-Amplifier
  • -0 dB without Pre-Amplifier

Receive Mixer Bypass Path

Allows instrument to remain in the signal path and provides some optional signal conditioning for frequencies less than 6 GHz.

Transmit Up-Conversion Path

Allows signals to be conditioned and optionally mixed up to a higher frequency.

• Input Frequency range: 400 MHz – 6 GHz
• Output Frequency range: 6 – 18 GHz
• Maximum Output Power (rms): 10 dBm max
• Fundamental Rejection: 30 dB min
• Calibrated Amplitude Accuracy: 1 dB
• Gain (@6 GHz): 4 dB
• Gain (@18 GHz): -8 dB

Transmit Bypass Path

Conditions VST signals by filtering out unwanted harmonic and spurious content.

• Frequency Range: 10 MHz – 6 GHz
• Insertion Loss : 10 dB max
• Rejection : 30 dB min
• Frequency Range: 10 MHz – 6 GHz
• Insertion Loss : 10 dB max

Instrument Control

• 32/64 bit IVI Compatible Driver

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