Fiber-Span LLC FS31H-4 사용자 설명서
UHF Headend Repeater Unit
User Manual Ver. A
Document ID: FS31H-4X -USR
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When there is an alarm condition, there is a short circuit between pins 1 and 2. This is a
summary alarm for any alarm in the HRU.
summary alarm for any alarm in the HRU.
3.4 Power Supply
The power utilized in the HRU is capable of supplying 150W at 28V DC. The power amplifier
draws approx. 90W at 28V DC. This is to ensure that there is additional headroom for other
minor active components like LNA’s and the Alarm Motherboard.
draws approx. 90W at 28V DC. This is to ensure that there is additional headroom for other
minor active components like LNA’s and the Alarm Motherboard.
3.5 Specifications
Frequency Range Downlink 457 - 462 MHz, Uplink 464 - 469 MH
Gain
40 dB to 70 dB in 2dB steps
OIP3 54dBm
Noise Figure
7dB
Power per Channel
Refer to Derating Table
Pass Bandwidth
See Frequency Arrangements
Input/Output VSWR
< 2.0:1
Connectors N-
Female
Dimensions (WxHxD in.)
20x20x9 (Refer to following table)
Weight (lbs)
100lbs (20”x20”x9”)
Mounting Method
Wall-mount Enclosure
Alarms (dry contact)
1. Downlink Amp RF Power Output
2. Uplink Amp RF Power Output
3. Door Alarm
4. Fan Alarm
MTBF 5
Years
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