EM 25 DIG

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The EM 25 DIG is an FM transmitter (87.6 ~ 107.9MHz) externally synthesized in steps of 10KHz, microprocessor controlled and LCD display for the visualization of the most relevant transmission parameters like frequency, modulation level, forward and reflected power, pre-emphasis, aux, L, R, MPX. It includes fold-back protection and telemetry output, and it is possible temporizing and tuning the output power from 0 to 25W. EM 25 DIG can be supplied with an internal digital stereo generator board (60dB separation).

technical features
S/N RATIO BETWEEN 30Hz AND 15kHz > 78dB, typical 86dB
S/N RATIO (AM ASYNCHRONOUS) > 55dB, typical >60dB
S/N RATIO (AM SYNCHRONOUS) > 50dB, typical >55dB
HARMONICS DISTORTION (75KHz dev.) < 0.05%, typical 0.02%
HARMONICS DISTORTION (150KHz dev.) < 0.2%, typical 0.05%
L/R STEREO CHANNELS CROSSTALK < -50dB (with external coder)
<-60dB (with internal coder, from 100Hz to 5kHz)
<-50dB (with internal coder, from 30Hz to 15kHz)
FREQUENCY RESPONSE (PROGRAM CHANNEL) ± 0.1dB (30Hz ~15kHz)
AUDIO FILTER BAND ATTENUATION > 50dB (f =19KHz)
BASE BAND LIMITER CUT Adjustable between 0 and +7dBm
FREQUENCY RESPONSE (Multiplex INPUT) ± 0.1dB (10Hz ~ 100KHz)
FREQUENCY RESPONSE (AUX CHANNEL INPUT) ± 0.2dB (10Hz ~ 100KHz)
FREQUENCY RANGE 87.6 ~ 107.9MHz
MODULATION TYPE FM, ± 75KHz dev. peak. F3E, F8E.
CHANNEL OSCILLATOR SYNTHESIZER STEPS 10KHz
RF OUTPUT POWER Adjustable between 1 and 25WRMS
HARMONICS LEVEL < -60dBc, typical -70dBc
SPURIOUS LEVEL < -80dBc, typical -95dBc
RF OUTPUT IMPEDANCE 50Ω asymmetrical
RF OUTPUT CONNECTOR N female
Audio/Multiplex INPUT IMPEDANCE Selectable 10KΩ / 600Ω, sym./asym.
AUDIO INPUT CONNECTOR XLR Female symmetrical
SCA/RDS INPUT IMPEDANCE 10KΩ asymmetrical
SCA/RDS INPUT CONNECTOR BNC Female
Audio/MPX INPUT LEVEL at ?75KHz dev. Adjustable between -3.5 and +12.5dBm
SCA/RDS INPUT LEVEL at ?7.5KHz dev. Adjustable between -12.5 and +3.5dBm
SCA/RDS INPUT LEVEL at ?2.0KHz dev. Adjustable between -24 and -8dBm
MODULATION OUTPUT LEVEL 0 ~ +10dBm (for ±75KHz dev. peak)
PRE-EMPHASIS TIME CONSTANT Variable 0 / 50 / 75ms ± 2%
POWER SUPPLY 115 / 230VAC ±15%, 50/60Hz
ConsumPTION (aT 25W OUTPUT RF POWER) 130VA / 75W
OPERATING TEMPERATURE RANGE -10 ~ +45?C
Dimensions 2RU 19'' standard rack (483 x 88 x 334 mm)
WEIGHT 6Kg (13.2lbs)