Bext Coverage Doctor

  • FM Broadcast Signal Analyser & Recorder                  

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Control Software

On the right the screen capture shows, the Coverage Doctor operating interface software running at 1024*768 resolution. This can be user set to 800*600 suitable for the screen in use. All data is still available through separate user accessible windows

RDS decode

Groups decoded are PI PS PTY PIN RT TA TP CT AF DI MS and EON. There are separate windows for displaying EON data and RT history. Group data can be viewed in real time and can be held for inspection. Group
repetition rates are calculated and RDS signal quality is given as a percentage.


EON and AF data

A continuous update of EON data is available for all networks received. When all data has been captured, it can be stepped through for inspection, or printed out for hard copy. Alternate frequencies are displayed on the main screen or if methodB is in use, the AF data can be continuously monitored in a separate window.

CT time and date


This can be viewed with the analog clock or digital readout. The PC clock can be synchronized to RDS clock.

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Data logging


RDS and scan data can be logged with
a single mouse click. The captured
data can be saved to hard disk as a
standard text file. These files can be
edited by a word processor.


Multipath

Multipath distortion is displayed
graphically and digitally with a mean
value given once every second.


Scanning

The FM Broadcast frequency spectrum can be scanned and displayed graphically. A fine tune window allows for accurate station
location in 10KHz increments.

Frequency deviation

A continuous scrolling chart, displays frequency deviation. A user adjustable timebase, can be applied to the signal. A deviation histogram window shows a distribution of modulation.
Signals measured:

Deviation measurement 0 to 100kHz RSSI measurement 0 to 83dB
Pilot 19kHz measurement
RDS 57kHz
subcarrier measurement
Multipath measurement

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Signals monitored via BNC connectors:

Pilot 19KHz
RDS 57KHz subcarrier
MPX output
MPX input
IF input
Limiter output
Deviation output
Multipath output
AF unbalanced


Hardware:

ABS enclosure    290 X 200 X 62mm
Weight    1100 gm
 

Signals monitored via XLR connectors:

AF balanced output, for line or loudspeaker*

Windows Control Software Software screen dump

Advanced hardware control software, utilizing the RS232 serial port, allows direct hardware control, running under the Windows operating system.

  • Aerial -20,-30dB attenuator
  • Frequency setting
  • Scanning and AutoTune
  • AF level setting
  • AF bass lift
  • IF input
  • MPX input

A continuous stream of RDS, RSSI, signal deviation, pilot, RDS subcarrier, multipath and tuning data, is sent back to the PC
Any window displaying data, can be instantly copied to the clipboard, from where it can be pasted to any application
This system is compatible with Windows95/98

*Software switchable

(c) 2004 BEXT Corporation USA