RTS RVON-I/O Anleitung zur Verwendung
RVON-I/O
Release
Notes
RIO - Rev A 3/2006
IN
I
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Dim,
MU~~X
intercom systems
1
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.
Issues
2
Crosstalk on the same channel
The output to the matrix is being heard on the same channel’s input. The input to the Codec need to be AC coupled. To fix the
crosstalk on the same channel, 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
3
When the RVON-I/O GPIO is connected to an ADAM frame with Redundant Controller Cards Installed, the RVON-I/O GPO is not able to
When the RVON-I/O GPIO is connected to an ADAM frame with Redundant
Controller Cards Installed, the RVON-I/O GPO is not able to drive both MCIIe
GPI
The GPO transistor can’t handle the current load for a dual Master Controller chassis. The GPO transistor’s input 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 resistor placement.
FIGURE 2. Resistor Placement (board number 9030-7772-000).
R163
R164
R169
R167
R168
R163
R161
R162
R158
R160
R159
R165
R155
R157
R154
R152
R153
R151
R149
R150
R148
R146
R147
R156
Issues
4
When the RVON-I/O is connected to a Master Controller in a Cronus chassis, is
not able to drive the Cronus GPI
NOTE: The Cronus Master Controller backcard will go from 9030-7788-001 Rev A to 9030-7788-001 Rev B.
NOTE: These instructions are also detailed in the Cronus Release Notes CRN-Rev. E or later.
The RVON-I/O’s voltage drop across the GPO output 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) and replace with 6.19 K resistors (part number 102515-
276). See figure 3 for resistor placement.
FIGURE 3. Resistor Changes
R424
R425
R426
R427
R428
R429
R430
R431
5
When the RVON-I/O is connected to a Master Controller in a Cronus chassis, is not able to 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
Issues
6
Andere Handbücher für RVON-I/O
2
Inhaltsverzeichnis
Andere RTS Gegensprechanlage Handbücher
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