RTS RVON-I/O Anleitung zur Verwendung

RVON-I/O

Release

Notes

RIO - Rev A 3/2006

Dim,

MU~~X

intercom systems

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

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

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

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

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

Andere Handbücher für RVON-I/O

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