Microgen TS9085 FM Modulation and AF Spectrum Analyser

Microgen TS9085 FM Modulation and AF Spectrum Analyser

The TS9085 and TS9065, FM Modulation and AF Spectrum Analysers, have been designed for precision monitoring of FM Radio Broadcasts. Connected to a standard Windows PC, via a USB port, their user friendly
interface displays all modulation data on screen for analysis. Audio outputs are provided for high quality headphone or loudspeaker monitoring, with full RDS decoding available, with live ‘off-air’ data recording. Extensive automatic logging of broadcast data with the included iLog
software. Remote control is possible with simple text file commands allowing the unit to be controlled from 3rd party software applications. Unique to this class of product is a FFT Spectrum Analyser for precise audio analysis. GPS With the introduction of V5.00, the iLog software now includes GPS decoding to the NMEA global standard. It will automatically scan the PC for any connected GPS NMEA compliant devices. Google Earth .kml files are generated for GPS tagged field measurement. The TS9085G and TS9065G units are supplied with their own USB GPS receiver module.
The enclosure is a custom designed dual-chamber aluminium extrusion, providing excellent screening between the analogue and digital circuitry and providing a extremely robust case for field use. This combination provides broadcast engineers, whether working on-site or as a mobile unit, with a competitively priced instrument, compatible for use around the world.

FFT Spectrum Analyser: The unit includes a precision base-band FFT Spectrum Analyser covering 10Hz to 100kHz with a range >90dB and a resolution of 20Hz. This can be used to inspect the Multiplex signal or as a stand-alone audio analyser using the external BNC input. Various sample windows can be applied i.e. Hanning, Hamming, Blackman-Harris etc, providing a versatile measurement instrument.

IF Amplifier, dual band.
The narrowband is set with multistage
selected ceramic filters and the wideband is set with a proprietary Gaussian response LC filter, computer optimised and equalised for
minimum overshoot. These filters allow precise ‘off-air’measurements, offering low levels of distortion for high quality audio
monitoring, via the headphone output or loudspeakers.

Software DSP stereo decoder
with excellent phase matching between channels, with lower distortion and noise than traditional analogue types.
Stereo monitor
with left and right channels shown on a time domain display. An additional 2D vector stereo quality display gives a visible guide to left and right channel behaviour.
Multiplex
Record and playback with full stereo audio monitoring using PC sound system. This feature records the raw USB data from the TS9085/65 directly to hard disk. This can then be replayed at any time, giving a live ‘off-air’ monitor. A recording can be made from any frequency on the channel list and is only limited by the hard-disk size
Antenna attenuator providing up to 30 dB attenuation, with user selectable 10dB steps. Different attenuator values can be assigned to each frequency on
the channel list.
IF input
at 10.7MHz on standard BNC 50 ohm
socket provides flexible monitoring with the front-end shut down automatically. This is achieved with a simple software switch.
IF filter output at 10.7MHz from a standard
BNC 50 ohm socket, allows the user to feed externalequipment.
Balanced
audio outputs for left and right channels
Class AB
audio amplifier for high quality audio monitoring on headphones or external loudspeakers. Additional audio stereo monitoring is available on the PC sound system.
USB powered,
Means that no other power source is
required.Running from a Laptop computer, provides for mobile monitoring and logging of radio broadcasts.
Windows iLog software
is supplied with the unit, providing complete control and display of all measurements.
This will run on a standard desktop or laptop PC.
strong>Measurements: *Deviation:+100kHz to -100kHz with oscilloscope and PPM
*Modulation Power: -8dBr to +12dBr (0dBr ref 19kHz)
*Pilot 19KHZ: dB or %
*RDS carrier 57KHz: dB or %
*Signal Strength: 85dBu range
*Multipath: 3dBu range
Multiplex signal accuracy:
A new LC IF equalization circuit ensures a flat frequency response. A 5 pole Butterworth filter provides out of band suppression. Bandwidth: 20Hz to 80kHz < -0.4dB 100kHz < -1.5dB Deviation accuracy: 0 to 75kHz < +/-1.5% (1kHz test sinusoid)
RDS decoding:
Decodes I,PTY,PS,RT,CT,PIN,AF,TA,TP,DI,MS and EON.