Sennheiser FT-902S15 Satellite Radio User Manual


 
Technical data 5
Frequency range 450 - 790 MHz with RX module item no. 03246
760 - 960 MHz with RX module item no. 03247
Bandwidth 24 MHz
Channel spacing, min. 300 kHz
Channel grid, min. 5 kHz
1st oscillator frequency (1st LO) 71 MHz below / above Fe
1st intermediate frequency (1st IF) 71 MHz
2nd oscillator frequency (2nd LO) 81.7 MHz
2nd intermediate frequency (2nd IF) 10.7 MHz
Deemphasis 50 µs
Nominal deviation/Peak deviation ± 40 kHz / ± 56 kHz
AF outputs 3 x XLR connectors with a balanced AF output signal,
min. load impedance 600
Nominal audio level + 12 dBm
Peak audio level + 18 dBm
THD for peak deviation 1 % (typ. < 0,5 %)
Audio frequency range (+1 dB / -2 dB) 40 Hz - 20 kHz
Compander HIDYN plus
®
( internally defeatable)
Diversity RF signal-dependent selection of AF outputs
Squelch adjustable threshold (0-100 µV RF input voltage)
S/N = 52 dB
(unweighted, with HIDYN plus
®
)
1.5 µV (typ. 1 µV)
S/N max.
(peak deviation, with HIDYN plus
®
)
112 dBA eff. / 100 dB CCIR peak
Limiter threshold 1 µV *
Intermodulation attenuation 76 dB
Rejection of adjacent channels 66 dB
Suppression of spurious and harmonics 100 dB *
Blocking 85 dB *
Image rejection 100 dB *
Spurious emissions (RF) - 80 dBm at HF - input
RF inputs 2 x N - sockets
Monitor socket 6.3 mm-ø jack, max. +18 dBu / 600 ,
short-circuit proof, min. load imp. 50 ,
gain: +20 dB (adjustable) and +20 dB (switchable)
Indicators Monitor: 3 LEDs for operating voltages
2 LEDs for booster supply voltage
2 LEDs for booster overload
1 LED for remote operation
RF input: 2 LEDs for booster supply voltage
RX modules: 8 digit alphanumeric LED display
(text or frequency)
2 diversity LEDs,
1 monitor LED,
2 x 16 digit LED bargraph display
for dev. and RF IN
Operating elements Monitor: mains switch, remote switch
+20 dB switch,
+20 dB regulator
RX modules: 6 keys
RI module: 2 switches for booster voltage
2 NF-PAD, 20 dB attenuation
Booster supply voltage 2 x 12 V, max. 150 mA, current limiter, switchable
Supply voltage 12 - 16 V / 3 A DC, protective low voltage
Power consumption max. 30 W
Mains connection 4-pin XLR, for plug-in PSU (different for each country)
Housing 19" rack, 4 height units, 34 BE
Dimensions approx. 200 mm x 360 mm x 190 mm
Weight approx. 7 kg (incl. all modules)
Approval number (Germany) A 102 932C RF (BZT
* with AB 1036 antenna booster connected in series.
GZA 1036 antenna recommended.