EM 350 COMPACT DIG

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The EM 350 COMPACT DIG is a 350W FM transmitter, microprocessor controlled, that allow a lot of applications like power level control at nights to save energy, and the complete monitoring and adjusting of several parameters of the equipment (input level, deviation, etc.). EM 350 COMPACT DIG includes a 350 high-efficiency amplifier and a restrictive 7-order filter. The switching power supply allows stable output power with input voltage from 90 to 260VAC. EM 350 COMPACT DIG can be supplied with an internal digital stereo generator board (60dB separation).


TECHNICAL FEATUREs:


AUDIO

S/N ratio (30 ~ 20000Hz)
Mono ≥78dB (86dB typical)
stereo ≥72dB (77dB typical)
weightED S/n RATIO (CCIR)
Mono ≥75dB (81dB typical)
stereo ≥68dB (72dB typical)


T.H.D. Distortion (limiting threshold
adjusted at 150kHz deviation)


75 KHz deviation <0.05% (0.02% typical)
150 KHz deviation <0.2% (0.05% typical)


stereo channels crosstalk (L / R)


with external encoder <-50dB
with internal encoder (100 ~ 5000Hz) <-60dB
with internal encoder (30 ~ 15000Hz) <-50dB


audio input frequency response


30 Hz ~ 15 KHZ (pass band) ±0.1dB
f >19 KHZ (rejected band) > 50dB
stereo input (MPX) frequency response ±0.1dB from 10Hz to 100KHz
aux. input (SCA/RDS) frequency response ±0.2dB from 10KHz to 100KHz


input levels


Audio and MPX (AT ?75 KHz deviation) -3.5 ~ +12.5dBm adj.
SCA/RDS (AT ?7.5 KHz deviation) -12 ~ +3.5dBm adj.
SCA/RDS (AT ?2 KHz deviation) -24 ~ -8dBm adj.
imput impedance
Audio and MPX 10K� balanced and 600� unbalanced (selectable)
Auxiliar SCA/RDS 10K�


Connectors


Audio XLR Female
MPX, Auxiliar (SCA/RDS) BNC Female
common mode input rejection (20 ~ 15000HZ) >50 dB (>60 dB typical)
MPX OUTPUT LEVEL 0 ~ +10dBm (75KHz deviation)
deviation limit 0 ~ +7dBm adj.
Pre-EMphasis time constant 50 or 75µs ±2%


Modulation


frequency range 87.6 ~ 107.9MHz
modulation mode FM (75KHz peak deviation)
MODULATION CLASS F3E, F8E
carrier frequency tuning step 10 / 100KHz
frequency offset < ±200Hz
frequency drift <100Hz / year


RF


RF output power 0 ~ 350 WRMS adj.
max. reflected power allowed 35W
harmonicS <-70dBc
spurious <-80dBc (-95dBc typical)
output impedance 50� (N Female connector)
control and protection - Protection against spurious emissions
- Reflected power protection
- Power level automatic reduction at night


general features


AC power supply 90 ~ 260VAC, 50/60Hz
power consumption 603,45 VA (350W RF)
temperatura range 0 ~ 35ºC recommended
-10 ~ 45ºC maximum
control signals RF enable
RF output power indication
ON AIR
Failure indication
RS-232
Dimensions 2RU (19" rack)
438 x 88 x 334mm without handles
weight 16Kg (35Lbs)