Larcan FM-250, Technical Manual

Page: 19 / 86

FM-250 FM BROADCASTING EXCITER
Issue Date: 21 Jan 2003
MONO OPERATION (With built in Mono filter)
AF RESPONSE
≤ ±
0.3dB (30Hz to 15kHz)
MONO DISTORTION
≤
0.1% (30Hz to 15kHz)
S/N RATIO
≥
80dB (20Hz to 20kHz) 50uS de emph
INPUT IMPEDANCE 600 ohms balanced (XLR)
DEVIATION SENSITIVITY +6dBm for
±
40kHz deviation (adj.)
ATTACK TIME
≤
2mS for increased 10dB I/P step
DECAY TIME
≥
80mS for a decreased 10dB I/P step
LIMITER DISTORTION
≤
0.35% (10dB into limiting)
LIMITER THRESHOLD Internally adjustable
ENVIRONMENTAL SPECIFICATIONS
A/C INPUT POWER 110V
±
10% (other on request)
A/C FREQUENCY VARIATION 60Hz
±5
% (other on request)
DC INPUT POWER +24V nominal Battery
STORAGE TEMPERATURE -40
°
C to +60
°
C
OPERATING TEMPERATURE -10
°
C to +45
°
C
RELATIVE HUMIDITY 20% to 90% (non condensing)
OPERATING ALTITUDE
≤
2500m above sea level
COOLING SYSTEM Forced air (4 x 24Vdc blowers)
PHYSICAL DIMENSIONS 480mm x 485mm x 88.8mm
PHYSICAL MASS Approximately 16kg
STANDARD ALARM SETTINGS AND LOCAL INDICATIONS (adjustable)
RF FAULT INDICATION
≤
175W (Red led on front panel)
VSWR FAULT INDICATION
≥
20W (Red led on front panel)
VSWR FAULT TRIP INDICATION
≥
25W (Red led/front panel/10Sec re-cycle)
TEMP FAULT INDICATION
≥
55
°
C (Red led on front panel)
TEMP TRIP INDICATION
≥
65
°
C (Red led on front panel)
ALC FAULT INDICATION Out of range (Red led/front panel meter)
PSU FAULT INDICATION Internal Psu fault (Red led on front panel)
RF PSU FAULT INDICATION RF PA Psu fault (Red led on front panel)
OVERVOLTAGE FAULT
≥
+52V at Control (Red led on front panel)
The unit has a number of operational customer link options, which should normally be
configured before delivery. Consult Control module technical description section.
•
RF Power backed off with high temperature.