Crown FMX250 Manual do Utilizador descarregar pdf (Página 7)

Getting Acquainted

1–3

1.2 Transmitter Package Specifications

RF Power Output:400 to 4400 watts continuous with remote

controlled power adjust

RF Drive Requirement:140 watts for full output

RF Output Impedance: 50 ohms (unbalanced)

Maximum SWR: 1.7:1 (With power foldback at high SWR)

Frequency Range:87–108 MHz

RF Harmonics/Spurious Products: Better than –80 dB

Asynchronous AM S/N Ratio: Better than –55 dB with 100% modulation at

400 Hz, no de-emphasis, no FM modulation

(typically > 60 dB)

Synchronous AM S/N Ratio: Better than –55 dB with 100% modulation at

400 Hz, no de-emphasis, FM

modulation=75 kHz @400 Hz

(typically > 60 dB)

Operating Environment:

Temperature Range: 0°–50°C at sea level

Humidity Range: 0–80% at 20°C (noncondensing)

AC Power:240 Volts AC +10/-15%, 50–60 Hz; (120 Volts AC for driver)

Power Consumption:Less than 5600 watts at 4400 watts RF output

typical

Power Factor: .96 typical

Overall Efficiency: 70% typical

RF Output Connector: 7/8 in. EIA flange, 7–16 in DIN optional

Power Amplifier Chassis: 7 x 17.25 x 23 inches (17.78 x 43.82 x

58.42 cm) exclusive of rack ears, but inclu-

sive of connectors

Power Supply Chassis: 5.25 x 17.25 x 23 inches (13.34 x 43.82 x

58.42 cm) exclusive of rack ears

Weight:PA2000—40 pounds (18.1 kg)

RF PA Modules—8 pounds (3.6 kg) each

PS2000—43 pounds (19.5 kg)

Note: System performance is specified using Crown Broadcast

Model FM250 Exciter where applicable.

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Crown FMX250 Manual do Utilizador Página 7