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CHAPTER 1

Issues

Since the release of the RVON-I/O card, a few issues have surfaced pertaining to the original card. This document covers these 
issues and how to fix the existing RVON-I/O board to solve these issues.

Issues

1.

Crosstalk on the same channel. The output to the matrix is being heard on the channel’s input.

2.

When the RVON-I/O GPIO is connected to a dual Master Controller in an Adam chassis, the RVON-I/O 
GPO is not able to drive both MCIIe GPI.

3.

When the RVON-I/O is connected to a Master Controller in a Cronus chassis, the RVON-I/O GPO is not 
able to drive Cronus GPI.

RVON-I/O Card Old and New

The RVON-I/O card once these changes take place will go from 9030-7772-000 Rev A to 9030-7772-
000 Rev B.

Summary of Contents for RVON-I/O

Page 1: ...RVON I O Release Notes RIO Rev A 3 2006 ...

Page 2: ...I N I SD i m M U X intercom systems ...

Page 3: ... The output to the matrix is being heard on the channel s input 2 When the RVON I O GPIO is connected to a dual Master Controller in an Adam chassis the RVON I O GPO is not able to drive both MCIIe GPI 3 When the RVON I O is connected to a Master Controller in a Cronus chassis the RVON I O GPO is not able to drive Cronus GPI RVON I O Card Old and New The RVON I O card once these changes take place...

Page 4: ...l you must remove 16 resistors 150Ohm R12 R14 R17 R18 R324 R327 R355 R358 R402 R405 and replace with 16 capacitors part number 102881 880 0 47 uF 16V in R12 R14 R17 R18 R324 R327 R355 R358 R402 R405 For replacement positions see figure 1 FIGURE 1 Crosstalk Resistors to Capacitors placement board number 9030 7772 000 R12 R14 R17 R18 R327 R326 R324 R325 R356 R355 R357 R358 R402 R404 R405 R403 ...

Page 5: ...put resistors need to be reduced to increase the base current This will increase the collector current s load To fix this issue change the 3 input resistors of each GPO from 22 1K to 2K This increases the collector current from 10 mA to 60 mA The transistor can handle 200 mA Also remove 24 resistors R146 through R169 and replace them with 2K resistors part number 102515 229 See figure 2 for resist...

Page 6: ...ut resistor is too large for the Cronus photo coupler GPI The Cronus series resistor to the photo coupler is also too large The voltage drops across both resistors prohibit operation To fix this issue change the RVON I O GPO Output from 22 1K to 6 19 K on the RVON I O card and replace four resistors R11 through R14 from 3 K to 470 Ohms 1 On the RVON I O card remove 8 resistors R424 through R431 an...

Page 7: ...drive the Cronus GPI 2 On the Cronus MC Back card remove the 3K resistors R11 through R14 3 Replace with 470 Ohm resistors part number 102513 471 FIGURE 4 Cronus board resistor placement The Cronus Master Controller board will go from 9030 7788 001 Rev A to 9030 7788 001 Rev B R11 R12 R13 R14 ...

Page 8: ...Issues 6 ...

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