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Summary of Contents for Signal Hound USB-SA124B
- Page 1 USB-SA124B Spectrum Analyzer User Manual...
- Page 2 Signal Hound USB-SA124B User Manual 2017, Signal Hound 35707 NE 86 La Center, WA 98629 USA Phone (360) 263-5006 • Fax (360) 263-5007 This information is being released into the public domain in accordance with the Export Administration Regulations 15 CFR 734...
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Page 3: Table Of Contents
Contents 1 Preparing For Use ................................5 2 Getting Started .................................. 6 3 Theory of Operation ................................ 10 4 Troubleshooting ................................12 5 Calibration and Adjustment ............................13 6 Specifications .................................. 13... - Page 4 7 Revision History ................................16 8 Warranty and Disclaimer ..............................16...
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Page 5: Preparing For Use
1 Preparing For Use Unpacking your Signal Hound and Installing Software The The Signal Hound USB-SA124B is a USB-based 100 kHz to 12.4 GHz econoy spectrum analyzer and measuring receiver. Using recent innovations in RF technology, the Signal Hound has the sensitivity, accuracy and dynamic range you’d expect in a unit many times its cost. -
Page 6: Getting Started
(* We do not recommend running the SA124B in a virtual machine (i.e. Parallels/VMWare/etc.)) 2 Getting Started Learn about the features of your USB-SA124B Signal Hound Spectrum Analyzer 2.1 FRONT & REAR PANELS The front panel includes a 50Ω SMA RF input. Do not exceed +20 dBm or +16VDC or damage may occur. - Page 7 Measurement Capabilities 2.2 MEASUREMENT CAPABILITIES The Signal Hound is capable of making a wide range of measurements, with resolution bandwidths from less than 1 Hz to 250 kHz. The internal I/Q demodulator captures up to 2 Megabytes of information each second, with a hardware-limited bandwidth of 250 KHz.
- Page 8 Getting Started | Limitations of the USB-SA124B 2.2.2 Real-Time Mode The USB-SA124B can continuously stream up to 250 kHz of spectrum to the Spike software running on your PC or laptop. Real-time mode displays this stream of data in the frequency domain.
- Page 9 2.3.7 Spike Software Great care was taken to enhance the performance and stability of the USB-SA124B and integrate it into a common software platform. All of the major functions of the USB-SA124B are available in the Spike software, as well as some powerful new features.
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Page 10: Theory Of Operation
2.4 USING THE SA124B AS A DOWNCONVERTER The USB-SA124B has on optional IF output of 63 MHz, which also happens to be "channel 3" in the Americas for analog and digital TV stations. There is an internal IF amplifier, adjustable over a 60 dB range to adjust the signal level for an external TV tuner, oscilloscope, or analog to digital converter. - Page 11 I/Q streaming: This is used for real-time mode (frequency domain) and zero span mode (time domain). In this mode, the USB-SA124B continuously mixes fixed LO frequencies with the RF input and streams the data to the PC or laptop for processing. Note that image and spurious rejection is disabled in this mode.
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Page 12: Troubleshooting
The USB-SA124B has a 6 MHz RBW which may be used above 200 MHz for faster sweeps. The 6 MHz RBW offers faster sweeps at the expense of a higher noise floor and lower frequency resolutionChapter... -
Page 13: Calibration And Adjustment
MAX HOLD to capture transient signals. 5) General Advice to avoid problems • Unplug your Signal Hound from the USB port when not in use, or before shutting down your computer. • Do not connect your Signal Hound’s USB port until your computer has completed its bootup sequence. - Page 14 Specifications | Amplitude (RBW ≤100KHz) Internal Frequency Reference 1 ppm Accuracy Optional Reference: 0.1 ppm Frequency Readout Accuracy reference error 1 sample Marker Accuracy reference error 1 sample Resolution Bandwidth 0.1Hz to 250KHz and 6MHz Spectral Purity Residual FM, 3 kHz Audio LPF, 15 kHz IF BW: [0.1 Hz + 4 Hz / GHz] typical RMS FM (e.g.
- Page 15 Specifications | Sweep Residual Responses (6.5 KHz Frequency Range Signal Level Test Conditions RBW, 0 dB RF Atten) 100 kHz to 10 MHz < -100 dBm 0 dB RF Atten, -70 dBm reference level 10 MHz to 8 GHz < -93 dBm 8 GHz to 11 GHz <...
- Page 16 Recommended calibration interval is 1 year at 20°C to 25°C. 6.8 ADJUSTMENTS Factory adjustment software shall be used to generate new calibration constants when USB-SA124B will not pass calibration. Temperature correction data is generated only at time of manufacture. 6.9 FCC COMPLIANCE This device is exempt from FCC Certification under 47 CFR Part 15.103(c).
- Page 17 Signal Hound shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. This Signal Hound product has a warranty against defects in material and workmanship for a period of two years from date of shipment.
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