|
The PIRA75 FM Broadcast Analyzer is a
stand-alone low-cost solution for FM broadcast analysis. It provides complete FM
modulation and basic AF spectrum measurements in FM radio band through the antenna input.
Built-in LCD display and control interface allows to measure and collect data in terrain
without need of any PC computer.
This kind of analyzer is an essential equipment for all FM radio stations to ensure
compliance with basic technical broadcast standards and to accomplish the highest audio
quality possible.
The PIRA75 is the device that was missing here till this time!
| PIRA75 FM Broadcast
Analyzer |
PIRA75 FM Analyzer in Box
| Buy it! |
|
PIRA75 FM Analyzer Module - Fixed LCD
| Buy it! |
|
PIRA75 FM Analyzer Module - Flexible LCD
| Buy it! |
|
Actual
news: We are looking for companies able
to produce and sell this equipment under own brand.
More info on email. (28.1.2010)
New firmware update & control software released (1.3).
Upgrade your units! (29.8.2009)
PIRA75 in action: http://pira.cz/monitor/?lang=eng |
|
| |
Main highlights:
- Stand-alone design, completely DSP based from IF to
outputs
- Compliant with CEPT/ERC REC 54-01 E
- Dual-conversion receiver
- Built-in LCD display and RS-232 interface
- Firmware updates for free
- Easy to use
|
Measurements:
- Overall frequency deviation incl. histogram
- Modulation power
- Baseband FFT
- Pilot and RDS deviation
- Pilot-to-RDS phase difference
- FM carrier frequency difference
- Signal quality and strength
- Stereo balance meter
- Audio monitor output
- RDS/RBDS decoder
|
The PIRA75 mainboard.
Quick technical data:
| Supply voltage |
8-16 V DC or 4x NiMH 1.2 V |
| CPU |
120 MHz RISC DSP |
| Antenna connector |
BNC, 50 Ohms |
| Frequency range |
87.5-108.0 MHz |
| RF sensitivity (26 dB S/N) |
4 uV |
| RF sensitivity (full measurements) |
70 uV |
| Board dimensions |
139 x 72 mm |
Find complete technical data in the pdf manual.
- If you adjust the modulation level using only your
ears, the real frequency deviation can easily reach more than 30 % over the limit.
- Overmodulation increases the FM band spectrum
pollution and audio distortion. An inspection may fine for it by a considerable amount of
money.
- If you adjust the pilot tone level only using a rule
of thumb, you may cause unavailing troubles to your listeners.
- The PIRA75 is one of the few FM analysis equipments on
the world that allows direct measurement of pilot-to-RDS phase difference.
- Not all commercially available audio limiters and
other parts of the broadcast chain ensure no overmodulation and overshooting. You may
believe and trust but the FM analyzer will show it exactly.
|
