Fiber-Span LLC FS31H-4 Manuale Utente

 

 

UHF Headend Repeater Unit 

 

 

User Manual Ver. A 

Document ID: FS31H-4X -USR 

            Page 17 of 32 

 

                            

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.   

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. 

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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