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DB
ELETTRONICA TELECOMUNICAZIONI S.p.A.
PM 1000 – 1 kW FM Broadcasting Transmitter - U
SER
’
S
M
ANUAL
11 /101
2.
TECHNICAL SPECIFICATIONS
RF SPECIFICATIONS
Operating frequency range .......................................................................................... 87.5 to 108 MHz
Operating frequency setting ................................ synthesised with internal dip switches, 10 kHz step
..................................................................................... synthesised by front panel switches (/C option)
Output impedance .......................................................................................................................... 50
Ω
Output connector ................................................................................................................................. N
Output power...................................................................................................................... 0 to 1050 W
Power tolerance ...........................................................................................................................
±
1 dB
Harmonics .................................................................................................................................
≤
-68 dB
Spurious ....................................................................................................................................
≤
-80 dB
Syncro AM modulation .............................................................................................................
≤
-55 dB
Asyncro AM modulation ..........................................................................................................
≤
-60 dB
Frequency stability
Thermal drift (0 to 50 °C) .......................................................................................................
±
250 Hz
Aging drift .....................................................................................................................
±
300 Hz / year
MODULATION
Mono operation
Input level -6 to +10 dBm
Input connector ............................................................................................................... XLR balanced
Input impedance ........................................................................................................................... 600
Ω
Bandwidth (± 0.25 dB) ................................................................................................. 20 Hz to 15 kHz
Attenuation of frequencies
≥
19 kHz .........................................................................................
≥
50 dB
Preemphasis .......................................................................................................................... 50/75
μ
sec
S/N ratio (± 75 kHz peak dev. with 1 kHz input, 50
μ
s de-emphasised) ....................................
≥
75 dB
THD+N (± 75 kHz peak dev. with 1 kHz input, unweighted) .....................................................
≤
0.1%
Stereo operation (with stereo coder included in /S model)
L & R input level ............................................................................................................ -6 to +10 dBm
Input connectors .............................................................................................................. XLR balanced
Input impedance .......................................................................................................................... 600
Ω
Bandwidth (± 0.25 dB) ................................................................................................. 20 Hz to 15 kHz
Attenuation of frequencies
≥
19 kHz .........................................................................................
≥
50 dB
Preemphasis .......................................................................................................................... 50/75
μ
sec
S/N ratio (± 75 kHz peak dev. with 1 kHz input, 50
μ
s de-emphasised) ....................................
≥
70 dB
THD+N (± 75 kHz peak dev. with 1 kHz input, unweighted) .....................................................
≤
0.1%
Stereo separation ........................................................................................................................
≥
60 dB
Summary of Contents for PM 1000
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