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PROPRIETARY DATA 

 

All data in this manual is proprietary and may not be disclosed, 

used or duplicated, for procurement or manufacturing purposes, 

without prior written permission by 

VERSITRON

 
 
 
 
 

VERSITRON LIFETIME WARRANTY 

 

All VERSITRON products are covered by a 

Lifetime Warranty

 against defects in materials and workmanship.  This coverage 

is applicable to the original purchaser and is not transferable. 
 
We repair, or at our option, replace parts/products that, during normal usage and operation, are proven to be defective during 
the  time  you  own  the  products,  provided  that  said  products  and  parts  are  still  manufactured  and/or  available.    Such 
repair/replacement is subsequent to receipt of your product at our facility and our diagnostic evaluation and review of the unit.  
Advance replacements are not provided as part of the warranty coverage. 
 
This warranty does not cover damage to products caused by misuse, mishandling, power surges, accident, improper installation, 
neglect, alteration, improper maintenance, or other causes which are not normal and customary applications of the products 
and for which they were not intended.  No other warranty is expressed or implied, and VERSITRON is not liable for direct, 
indirect, incidental or consequential damages or losses. 
 
In the  unlikely event a  warranty issue should arise, simply contact  us at 302-894-0699 or 1-800-537-2296 or via e-mail  to 

[email protected]

 and obtain a Return Material Authorization (RMA) number.  Reference this number on the outside of 

the  shipping  container  and  return  the  unit  (shipping  charges  prepaid)  to  us  for  diagnostic  review  and  repair/replacement  as 
determined solely by VERSITRON.  We pay the shipping charges to return the repaired unit or a replacement unit to you. 

 

 
 
 
 

 
 
 
 

 

 

CAUTION!!!!     WARNING!!!! 

 

DO 

NOT

 CONNECT THE F271XA SUBSCRIBER UNIT TO THE PBX SIDE OF 

THE CIRCUIT AS THIS MAY RESULT IN DAMAGE TO THE F271XA.

 

 

SUCH DAMAGE IS NOT COVERED BY THE WARRANTY. 

Summary of Contents for F270XA

Page 1: ...F271XA Fiber Optic Telephone Modem Technical Manual Revision B August 2011 VERSITRON Inc 83 Albe Drive Suite C Newark DE 19702 www versitron com Safeguarding Communications Since 1958...

Page 2: ...arranty does not cover damage to products caused by misuse mishandling power surges accident improper installation neglect alteration improper maintenance or other causes which are not normal and cust...

Page 3: ...ne Modem Section 1 provides a general description of the equipment Section 2 provides installation instructions Section 3 provides operating instructions Section 4 provides the theory of operation Sec...

Page 4: ...e converse occurs in the other direction for the F271XA The telephone modem transmits analog signals of 300 to 3400Hz 1 2 3 Physical Characteristics The telephone modems measure 7 0 wide x 0 84 high x...

Page 5: ...3 x 48 0 x 35 0 cm 2 Slot Rack Mount Chassis Side by Side PSAC08 PSAC09 LTWPD1210PLX LTWPD1210EPL HF 20A 32406 7 0 H x 19 0 W x 11 6 D 17 8 x 48 0 x 29 5 cm 20 Slot Rack Mount Chassis AC300WR 32410 VM...

Page 6: ...Twisted Pair Audio Signal Analog 300Hz to 3 4Khz Idle Channel Noise 65dBm Single Frequency Distortion 46dB 2nd Harmonic Distortion 55dB Talk Battery 44 to 52 VDC Loop Current 40mA max off hook Ring S...

Page 7: ...at the copper and fiber optic cables are not mechanically separated from the modem during operation When installed in either desktop chassis or in the dual card rack mount chassis space for the power...

Page 8: ...nge 2 3 3 Default Jumper The remaining jumper J1 is open and should not be changed 2 4 Power Requirements The F271XA products are designed to operate from an AC power transformer or a DC power source...

Page 9: ...in a standalone or dual card rack mount chassis a power transformer is plugged into barrel jack J3 When installing the Telephone Modem in a 20 Slot rack mount chassis HF 20Aor VMX20 with optional pow...

Page 10: ...click into place 2 6 Initial Checkout Procedure F271XA telephone modems contain no power on off switch Once power is connected the Modem will go through its power up sequence When the System LED see...

Page 11: ...here are five indicators used on the F271XA Link Status Link Transmit Data TX Receive Data RX System Status System and a multi function LED for the telephone port see Table 7 for descriptions Table 7...

Page 12: ...an alarm circuit Therefore the Alarm signal on the P1 connector will not be driven by this unit 4 3 Functional Description The unit consists of the following circuits 4 3 1 Ring Detection 4 3 2 Ring...

Page 13: ...phone CODEC chipset 4 3 5 Fiber Optic Transceiver Circuit Fiber optic communications are handled by the SFP module The power for this module is isolated from the other power circuits through filters T...

Page 14: ...current condition Power off the unit for a few minutes and retry Other Contact VERSITRON for assistance Link Status Link LED is OFF Incorrect optical signal level received at receiver input 1 Check t...

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