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10 GHz Broadband High Frequency Analyzer HFR-4
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Device description of the HFR-4
The HFR-4 is a broadband radio receiver for verification and appreciation of high-frequency signals. Two logarithmic periodic antennas ranging from 900 Mhz to 2,6 Ghz and from 2,4 GHz to 11 GHz cover the frequency ranges of terrestrial television, digital broadcasting, cellular mobile radio services and cordless phones (DECT etc.), WLAN bands at 2.4 GHz and 5.8 GHz (according to IEEE 802.11a/b, Wi-Fi), Bluetooth, WIMAX and some radar bands and allow for the detection of the direction and the plane of polarisation of high-frequency signals.
Measuring modes of operation
A wide frequency range and varying modulation methods make it difficult to assess high-frequency signals. The HFR-4 permits capturing the average value of the non-pulsed portion of the modulated signal and the peak value of the pulsed portion using a peak-hold facility. Additionally an acoustic analysis of the modulation by the implementated speaker or externally connected phones can be done for identifying the high-frequency signals.
Multifunctional indication
The measuring device provides two available units of measure: Measuring values can be received from the device as electric field strength (mV/m) or as radiation density (µW/m²). A bargraph on the display enables the user to get a rapid overview of the measured values. The menu-driven setup of the device is easy to handle by two control keys at the front face of the device.
Multifunctional connectivity
There is optionally available a serial interface (RS232) for HFR-4 with a functional PC software enabling long-term recordings, logging and evaluating the measurements. It also enables to connect an external data logger. An optional analog output for pen recorders provides the measuring values as an analog DC signal.
The technical specifications
Frequency range:
- approx. 1MHz to 8GHz, partially compensated
(approx. 1MHz to 10 GHz at reduced accuracy)
Measuring ranges:
- 6 mV/m to 2000 mV/m (= ca. 0,1 - 10000 µW/m² = 10 pW/cm² - 1uW/cm²)
Maximum resolution:
- better than 0,05 µW/m² (= 1 pW/cm²)
Tolerance of measurement:
- ± 3dB within the range of 2 GHz to 6 GHz
Indication:
- Display double-spaced and acoustic indication
Modes of operation:
- Peak search function with peak-hold facility
- Average value
- Units of measure selectable
- Sound level adjustable
Interfaces:
- Headphone output
- optional serial interface (RS232)
- optional analog output for pen recorders
Admissable operating temperature:
- 0 to 40°C
Physical dimensions:
- 85mm x 117mm x 55mm
Weight:
- approx. 300g
Power supply:
- 9V battery or rechargeable accumulator
- Indication of low battery
Current input:
- max. 40mA
Delivery contents:
HFR-4 with transport case, LogPer antenna 900MHz to 2.6GHz, LogPer antenna 2.4GHz bis 11 GHz, battery recharger, 2 accumulators
Available accessories: analog output for pen recorders, serial interface with PC software for data processing