Product Manual
Table Of Contents
- Abbreviations And Acronyms
- 1 Tornado System Overview
- 2 Safety Warnings
- 3 Tornado radio unit overview
- 4 Setting Up on the Bench
- 5 Configuration Control and Monitoring System (CCMS)
- 6 Changing Operating Frequency and Power Calibration
- 7 Duplexer Tuning Guide
- 8 Radio Reference Information
© MiMOMax Wireless Ltd
Tornado Product Manual
48
Adjacent Channel Power
Ratio
(ACPR)
>60 dB
Transient ACPR
>60dB
Intermodulation Rejection
>70dB
Tx Occupied BW
50 kHz
40 kHz
25 kHz
20kHz
12.5kHz
10kHz
Internal Duplexer
Type
Bandpass
Tx/Rx Split
5MHz minimum (400 MHz), 30 MHz (700 MHz),
9 MHz minimum (900 MHz)
Frequency Range
400-430MHz, 420-450MHz, 440-470MHz
Stop Band Attenuation
>60dB @ >5MHz from centre (400 MHz), >75 dB
(700 MHz), >60 dB @ >9Mhz from centre) (900
MHz)
Pass Band Bandwidth
2MHz (-0.5dB) (400 MHz), 3 MHz (-0.5 dB)
(700MHz), 4 MHz (-0.5 dB) (900 MHz)
1. Sensitivity as specified includes forward error correction and internal duplexer loss. Note
that systems employing adaptive modulation (e.g MDL or MCAM) will automatically reduce
the modulation order at a signal level higher than the specified sensitivity level. This will
maintain the lowest possible error rate.
Table 5: RF characteristics
8.2.6.1 Site Engineering
For personal safety and equipment reliability reasons the following must be adhered to:
Power supply
The equipment must be powered from a power supply complying with the requirements of IEC 60950-1 including
compliance with sub clause 7.4 ‘Insulation between primary circuits and cable distribution systems’.
Grounding
On site ground networks must be created in accordance with ITU-T Recommendation K.27: Protection against Interference;
Bonding Configuration and Earthing inside a telecommunications building.
Equipment location
It is recommended that the radio unit is installed in a dry, dust-free room. If this is not possible then the waterproof boot must
be fitted to protect the unit.
Equipment ventilation
A thermal study should be carried out for each site to check and ensure that thermal conditions within the enclosures do not
go beyond the radio units operating limit. If the temperature of the site is known to exceed the
operating limits of the unit,
then the enclosure must have an air conditioning, or a forced air system installed to stabilise these excursions.
Lightning protection
Lightning protection is important to ensure the protection of the tower, antenna and the radio equipment hardware. Below
shows the point earthing concept recommended.