evertz 5601AC02 User manual

5601ACO2
Automatic Changeover
Instruction Manual
© Copyright 2004 - 2017
EVERTZ MICROSYSTEMS LTD.
5288 John Lucas Drive
Burlington, Ontario
Canada L7L 5Z9
Phone: [phone]
Sales: [email protected] Fax: [phone]
Tech Support: [email protected] Fax: [phone]
Web Page: http://www.evertz.com
Version 1.2, September 2017
The material contained in this manual consists of information that is the property of Evertz Microsystems and is intended solely for the use of
purchasers of the 5601ACO2 Automatic Changeover. Evertz Microsystems expressly prohibits the use of this manual for any purpose other
than the operation of the 5601ACO2.
All rights reserved. No part of this publication may be reproduced without the express written permission of Evertz Microsystems Ltd. Copies
of this manual can be ordered from your Evertz dealer or from Evertz Microsystems.

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IMPORTANT SAFETY INSTRUCTIONS
The lightning flash with arrowhe
ad symbol within an equilateral triangle is
intended to alert the user to the presence of uninsulated “Dangerous voltage”
within the product’s enclosure that may be of sufficient magnitude to constitute a
risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user
to the presence of important operating and maintenance (Servicing) instructions
in the literature accompanying the product.
•Read this information
•Keep these instructions.
•Heed all warnings.
•Follow all instructions.
•Do not use this apparatus near water
•Clean only with dry cloth.
•Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
•Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
•Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two
blades with one wider than other. A grounding type plug has two blades and a third grounding
prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit
into your outlet, consult an electrician for replacement of the obsolete outlet.
•Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles and the point where they exit from the apparatus.
•Only use attachments/accessories specified by the manufacturer
•Unplug this apparatus during lightning storms or when unused for long periods of time.
•Refer all servicing to qualified service personnel. Servicing is required when the apparatus has
been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled
or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does
not operate normally, or has been dropped.
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC –
SHOCK, DO NOT EXPOSE THIS APPARATUS
TO RAIN OR MOISTURE
WARNING
DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR SPLASHING AND ENSURE THAT NO
OBJECTS FILLED WITH LIQUIDS ARE PLACED ON THE EQUIPMENT
WARNING
TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE AC MAINS, DISCONNECT THE
POWER SUPPLY CORD PLUG FROM THE AC RECEPTACLE
WARNING
THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE

INFORMATION TO USERS IN EUROPE
NOTE
This equipment with the CE marking complies with both the EMC Directive (89/336/EEC) and the Low
Voltage Directive (73/23/EEC) issued by the Commission of the European Community.
Compliance with these directives implies conformity to the following European standards:
•EN60065 Product Safety
•EN55103-1 Electromagnetic Interference Class A (Emission)
•EN55103-2 Electromagnetic Susceptibility (Immunity)
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to the European Union EMC directive. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.
INFORMATION TO USERS IN THE U.S.A.
NOTE
FCC CLASS A DIGITAL DEVICE OR PERIPHERAL
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.
WARNING
Changes or modifications not expressly approved by Evertz Microsystems Ltd. could void the user’s
authority to operate the equipment.
Use of unshielded plugs or cables may cause radiation interference. Properly shielded interface cables
with the shield connected to the chassis ground of the device must be used.

Model 5601ACO2 Automatic Changeover Unit
Revision 1.2
REVISION HISTORY
REVISION DESCRIPTION DATE
0.1 Preliminary version Sep 2008
0.2 Added VistaLINK®information & rear plate to section 2.1 Oct 2008
0.3 Updated rear plate diagram. Added version number to VistaLINK®
section. Updated VistaLINK®screen shots. Jan 2009
0.4 Updated table 2-3, updates throughout section 3. Mar 2009
1.0 First Release Apr 2009
1.1 Updated overview section. Added Figure 2-2. Mar 2010
1.1.1 Updated section 4.6.3 Jul 2010
1.1.2 Added new pictures of the front frame Jul 2010
1.1.3 Corrected toggle switch names & updated panel control section Aug 2010
1.1.4 Corrected error in Table 2-1 Nov 2015
1.2 Error Fixing on Installation Section Sep 2017
Information contained in this manual is believed to be accurate and reliable. However, Evertz assumes no responsibility for the use thereof or
for the rights of third parties, which may be affected in any way by the use thereof. Any representations in this document concerning
performance of Evertz products are for informational use only and are not warranties of future performance, either expressed or implied. The
only warranty offered by Evertz in relation to this product is the Evertz standard limited warranty, stated in the sales contract or order
confirmation form.
Although every attempt has been made to accurately describe the features, installation and operation of this product in this manual, no
warranty is granted nor liability assumed in relation to any errors or omissions unless specifically undertaken in the Evertz sales contract or
order confirmation. Information contained in this manual is periodically updated and changes will be incorporated into subsequent editions. If
you encounter an error, please notify Evertz Customer Service department. Evertz reserves the right, without notice or liability, to make
changes in equipment design or specifications.

Model 5601ACO2 Automatic Changeover Unit
Revision 1.2
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Model 5601ACO2 Automatic Changeover Unit
CONTENTS Revision 1.2 Page i
TABLE OF CONTENTS
1. OVERVIEW................................................................................................................................1-1
1.1. HOW TO USE THIS MANUAL...........................................................................................1-4
2. INSTALLATION..........................................................................................................................2-1
2.1. REAR PANEL....................................................................................................................2-1
2.1.1. Coaxial Connections...............................................................................................2-1
2.1.2. Balanced AES, DARS and Analog Audio Connections...........................................2-2
2.1.3. Linear Time Code, Syncro and GPIO Connections ................................................2-2
2.1.4. Ethernet Connections.............................................................................................2-3
2.1.5. Power Connections ................................................................................................2-4
2.2. MOUNTING .......................................................................................................................2-4
2.3. POWER REQUIREMENTS................................................................................................2-4
2.4. 5601MSC CONNECTIONS................................................................................................2-5
2.4.1. Sync Outputs..........................................................................................................2-6
2.4.2. 10 MHz Output.......................................................................................................2-6
2.4.3. Word Clock Output.................................................................................................2-6
2.4.4. Unbalanced DARS AES1 and AES2 Outputs.........................................................2-6
2.4.5. Balanced DARS, AES1, AES2 and Analog Audio Outputs.....................................2-6
2.4.6. Video Test Signal Generator Outputs.....................................................................2-7
2.4.7. LTC and GPIO Connections...................................................................................2-7
2.4.8. Synchronizing the Menu Settings of the Two 5601MSC Units................................2-8
2.5. CONNECTING THE GENERAL PURPOSE INPUTS AND OUTPUTS ..............................2-8
3. HOW TO OPERATE THE AUTOMATIC CHANGEOVER...........................................................3-1
3.1. AN OVERVIEW OF THE STATUS INDICATORS..............................................................3-1
3.1.1. Operating Mode Indicators .....................................................................................3-1
3.1.2. Input Indicators.......................................................................................................3-2
3.1.3. ACO GPI Indicators................................................................................................3-2
3.1.4. Power Supply Indicators.........................................................................................3-2
3.2. FRONT PANEL CONTROL...............................................................................................3-2
3.2.1. Automatic Changeover Mode.................................................................................3-3
3.2.2. Manual GPI Changeover Mode ..............................................................................3-3
3.2.3. Manual Switch Changeover Mode..........................................................................3-4
3.2.4. Front Door Button: Recent Event Trigger ...............................................................3-4
3.3. DIP SWITCHES.................................................................................................................3-4
3.3.1. GPI Input Mode......................................................................................................3-5
3.3.2. Changeover Rate ...................................................................................................3-6
3.3.3. Bank Priority...........................................................................................................3-6
3.3.4. Change Limiting .....................................................................................................3-6
3.4. GPO TALLY OUTPUTS.....................................................................................................3-7

Model 5601ACO2 Automatic Changeover Unit
Page ii Revision 1.2 CONTENTS
4. TECHNICAL DESCRIPTION......................................................................................................4-1
4.1. Auto Changeover Switch Criteria...................................................................................4-1
4.2. Change Limiting Operation.............................................................................................4-1
4.2.1. One Change Mode.................................................................................................4-2
4.2.2. Dual Change Mode ................................................................................................4-2
4.2.3. Unlimited Change Mode.........................................................................................4-3
4.3. Switching Decision Tree .................................................................................................4-3
4.4. SPECIFICATIONS.............................................................................................................4-4
4.4.1. LTC Outputs...........................................................................................................4-4
4.4.2. Coaxial Inputs and Outputs....................................................................................4-4
4.4.3. Balanced DARS, AES1, AES2 and Analog Audio Inputs and Outputs....................4-4
4.4.4. ACO General Purpose Inputs and Outputs ............................................................4-4
4.4.5. MSC General Purpose Inputs and Outputs ............................................................4-5
4.4.6. Changeover Conditions..........................................................................................4-5
4.4.7. Ethernet .................................................................................................................4-5
4.4.8. Electrical.................................................................................................................4-5
4.4.9. Physical..................................................................................................................4-5
4.5. UPGRADING THE FIRMWARE.........................................................................................4-6
4.5.1. Overview................................................................................................................4-6
4.5.2. Terminal Program Setup........................................................................................4-6
4.5.3. Initiating Firmware Upgrade Mode from the Terminal Program..............................4-7
4.5.4. Uploading the New Firmware .................................................................................4-7
4.5.5. Completing the Upgrade ........................................................................................4-8
4.6. SERIAL PORT CONFIGURATION AND STATUS.............................................................4-8
4.6.1. Network Configuration............................................................................................4-9
4.6.2. SNMP Configuration...............................................................................................4-9
4.6.3. Voting Control ......................................................................................................4-10
4.6.4. Show Status.........................................................................................................4-11
4.6.5. Upgrade...............................................................................................................4-12
5. VISTALINK® CONFIGURATION AND CONTROL......................................................................5-1
5.1. Connecting the 5601ACO2 to VISTALINK®......................................................................5-1
5.1.1. Installing VISTALINK®..............................................................................................5-1
5.1.2. Using VistaLINK® to Configure the 5601ACO2.......................................................5-2
5.2. General Control Settings.................................................................................................5-2
5.3. Monitoring the 5601ACO2 using the General Status Tab .............................................5-3
5.4. Configuring the Voting Control ......................................................................................5-4
5.4.1. Global Control Parameters.....................................................................................5-4
5.4.2. General Parameters...............................................................................................5-5
5.4.3. Analog TG Voting Parameters................................................................................5-5
5.4.4. 3G HD SDI TG Voting............................................................................................5-5
5.4.5. Analog Sync Voting................................................................................................5-5

Model 5601ACO2 Automatic Changeover Unit
CONTENTS Revision 1.2 Page iii
5.4.6. DARS Voting..........................................................................................................5-5
5.4.7. LTC Voting.............................................................................................................5-5
5.4.8. GPO Voting............................................................................................................5-6
5.5. Monitoring the GPO Status.............................................................................................5-6
5.5.1. GPO Status Tab.....................................................................................................5-6
5.6. 5601ACO2 Fault Trap Controls .......................................................................................5-7
5.6.1. Setting the Analog Faults .......................................................................................5-7
5.6.2. Setting the 3G HD SDI TG Faults...........................................................................5-8
5.6.3. Setting the AES DARS Faults.................................................................................5-9
5.6.4. Setting the LTC Faults............................................................................................5-9
5.6.5. Setting the MSC GPO Faults................................................................................5-10
5.6.6. Configuring the Faults Tab...................................................................................5-11
Figures
Figure 1-1: 5601ACO2 Block Diagram.......................................................................................................... 1-3
Figure 1-2: Front View of Frame.................................................................................................................... 1-4
Figure 2-1: 5601ACO2 Rear Panel................................................................................................................ 2-1
Figure 2-2: Redundant Master Clock/SPG with Auto Changeover System Diagram.................................... 2-5
Figure 2-3: Typical GPI Circuitry.................................................................................................................... 2-8
Figure 2-4: GPO1 Output Circuitry ................................................................................................................ 2-9
Figure 2-5: GPO2 Output Circuitry ................................................................................................................ 2-9
Figure 3-1: Model 5601ACO2 Front Panel.................................................................................................... 3-1
Figure 3-2: Front Panel & Card Edge Control................................................................................................ 3-3
Figure 4-1: 5601ACO2 Switching Logic......................................................................................................... 4-3
Figure 5-1: VistaLINK®Configuration – General Control............................................................................... 5-2
Figure 5-2: VistaLINK®Monitoring – General Status..................................................................................... 5-3
Figure 5-3: VistaLINK®Monitoring – Voting Control...................................................................................... 5-4
Figure 5-4: VistaLINK®Monitoring – GPO Status.......................................................................................... 5-6
Figure 5-5: VistaLINK®Monitoring – Analog Faults....................................................................................... 5-7
Figure 5-6: VistaLINK®Monitoring – 3G HD SDI Faults................................................................................ 5-8
Figure 5-7: VistaLINK®Monitoring – AES DARS Faults................................................................................ 5-9
Figure 5-8: VistaLINK®Monitoring – LTC Faults......................................................................................... 5-10
Figure 5-9: VistaLINK®Monitoring – MSC GPO Faults............................................................................... 5-10
Figure 5-10: VistaLINK®Monitoring – Faults............................................................................................... 5-11
Tables
Table 2-1: DARS/AES/ANALOG Terminal Strip Pin Definitions.................................................................... 2-2
Table 2-2: AUX I/O Pin Definitions ................................................................................................................ 2-2
Table 2-3: ACO CTRL/STATUS and MSC GPIO Terminal Strip Pin Definitions .......................................... 2-3
Table 2-4: Standard RJ45 Wiring Colour Codes........................................................................................... 2-3
Table 3-1: DIP Switch Functions ................................................................................................................... 3-4
Table 3-2: GPI Input Mode Switch Settings................................................................................................... 3-5
Table 3-3: Single GPI Mode Operation.......................................................................................................... 3-5
Table 3-4: Dual GPI Mode Operation............................................................................................................ 3-5
Table 3-5: Changeover Rate Switch Settings................................................................................................ 3-6
Table 3-6: Bank A Priority Switch Settings.................................................................................................... 3-6
Table 3-7: Change Limiting Switch Settings.................................................................................................. 3-6

Model 5601ACO2 Automatic Changeover Unit
Page iv Revision 1.2 CONTENTS
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Model 5601ACO2 Automatic Changeover Unit
OVERVIEW Revision 1.2 Page 1-1
1. OVERVIEW
The 5601ACO2 Automatic Changeover is intended to be connected directly to two 5601MSC Master
Clock / Sync Generators as shown in Figure 2-2. The 5601ACO2 system uses latching relays to
ensure maximum reliability and minimal disruption in the event of any failure. The complete system
provides the highest level of security for television station video and time synchronization systems.
Two power supplies are included as a standard feature, to alleviate any single point of failure concerns.
The above recommended practices provide the highest degree of protection by minimizing the number
of point of failure connections within your plant referencing system. If you wish to modify your
referencing system from the recommended design, please consult the factory prior to implementation
to ensure your system’s maximum reliability is maintained.
The front panel has one pushbutton. This button shows the last state which caused a changeover.
This is to assist with diagnostics in cases where the problem has cleared before an operator can
observe the front panel. Seventy LEDs provide status information as to the health of the two
5601MSCs, together with indication as to which one is active. In addition two GPO outputs indicate
which master is active and when the inputs from both masters are not the same.
The main circuit board has three switches, behind the front panel for added security. There is an AUTO
/ MANUAL switch, a GPI / FRONT PANEL switch and an A / B select switch for manual changeover. In
automatic mode, all signals from both 5601MSCs are scrutinized to detect any abnormal signals. For
example if a level, pulse width, phase, time code error or other abnormality is detected, the 5601ACO2
circuitry will trigger and the entire bank of signals will be switched to the backup 5601MSC. In manual
mode the changeover can be operated from a GPI or from the front panel switch.
The 5601ACO2 features selectable voting via VistaLINK®for auto-changeover feature. Individual
inputs may selectively be included or excluded in the voting process to drive auto-changeover logic.
The 5601ACO2 offers connections for 6 colour black, (or bi-level or tri-level sync signals, or 10 MHz or
pulses or word clock), 1 10MHz , 1 Word clock, 8 SD/HD/3G SDI test signals, 2 analog video test
signals, DARS, 2 AES, analog audio, and two linear time codes (LTC) to each of the two Master
5601MSCs. Each 5601MSC Master offers two LTC outputs that may be used for different time codes.
All four LTC signals are fed to the 5601ACO2 on two 'D' connectors, one for each Master. The LTC
outputs from the selected master are available on two XLR connectors. There is an XLR for LTC input
which will feed this signal to both 5601MSCs. The Word clock and 10 MHz inputs can also monitor bi-
level, tri-level sync signals. Each 5601MSC provides 2 GPO signals which are also on the ‘D’
connectors. The 5601ACO2 feeds these signals through to the 2 x 8 terminal blocks. Each 5601MSC
is equipped with 2 GPI inputs and 2 GPO outputs. To facilitate installation, these connections are
connected through to a 2 x 8 pin terminal block on the 5601ACO2. The outputs from the 5601MSCs
are passed straight through the 5601ACO2. The 5601ACO2 can monitor these signals and include
them in the decision making process. Inputs to the 5601MSCs are internally split by a 'Y' connector to
ensure that both 5601MSCs receive the same GPI contact closures.

Model 5601ACO2 Automatic Changeover Unit
Page 1-2 Revision 1.2 OVERVIEW
In the event of a changeover occurrence, it is necessary that all outputs on one 5601MSC have the
same timing as those on the other. Identical timing for both 5601MSCs is assured by locking both to
the same frequency and phase source (i.e. GPS, or genlocking one 5601MSC to the other). Identical
phasing of the independent black outputs is assured by implementing the Syncro mode in the
5601MSCs. To use this mode, both 5601MSC communication ports are connected together using the
link cable supplied with the 5601ACO2. With both 5601MSCs operating in Syncro mode, timing
adjustments made to one 5601MSC will be automatically applied to both. The link cable is connected
permanently, so that any system re-timing will be applied to both 5601MSC units.
Features:
•Relay switches for all the system critical outputs from two 5601MSC units
•6 video/sync outputs
•8 SD/HD/3G SDI test signal outputs
•2 Analog video test signal outputs
•10MHz frequency reference
•Word Clock output
•Balanced and unbalanced DARS and 2 AES outputs
•Balanced analog audio output
•Linear time code outputs
•Automatic changeover is a voting system based on which source has the most valid signals and
that the good signals on the present master are also on the backup.
•Three switches behind the front panel select automatic, front panel or GPI activation of changeover
•56 Front panel status LEDs show the health of each of the inputs
•14 Front panel status LEDs show the operational modes of the changeover
•Hot swappable redundant power supply standard
•VistaLINK®capable offering remote monitoring and configuration capabilities via SNMP using the
model 9000NCP Network Control Panel or Evertz VistaLINK®PRO or other third party SNMP
manager software.
Signal Type
Inputs
Outputs
Sync
12 BNC
6 BNC
10 MHz
2 BNC
1 BNC
Word clock
2 BNC
1 BNC
DARS / AES
6 BNC
3 BNC
LTC
2 DB15
2 Male XLR
GPIO
Terminal strip
Terminal Strip
Balanced DARS / AES / Analog audio
2 Terminal Strips
Terminal Strip
SD/HD/3G SDI
16 BNC
8 BNC
LTC IN
1 Female XLR
Analog Video TG
4 BNC
2 BNC

Model 5601ACO2 Automatic Changeover Unit
OVERVIEW Revision 1.2 Page 1-3
3G/HD/SD EQ, VIDEO
SYNC Slicer, 10MHz,
WORDCLOCK Slicer
3G/HD/SD EQ, VIDEO
SYNC Slicer, 10MHz,
WORDCLOCK Slice
AES/DARS Rx
AES/DARS Rx
3G/HD/SD (8),
SYNC (6),
ATG(2), 10MHz,
WORDCLOCK,
UNBAL. AES (2)
UNBAL.DARS
Inputs
BALANCED AES (2),
BALANCED DARS,
ANALOG AUDIO (2)
Inputs
A
B
3G/HD/SD (8),
SYNC (6), ATG(2),
10MHz,
WORDCLOCK,
UNBAL. AES (2)
UNBAL.DARS
Outputs
BALANCED AES (2),
BALANCED DARS,
ANALOG AUDIO (2)
Out
Latching
Relays
VistaLINK
TM
Interface
A
B
GPO
Interface
Format Validation
GPIO Processor
Selector Guide
Latching
Relays
A
B
Internal
termination
(not on 3G/
HD/SD)
LTC/IRIG (2), GPI (2)
Inputs
GPO from processor (2),
GPI from Inputs(2)
Out
LTC Slicer, GPI
LTC Slicer, GPI
LTC/IRIG
(2) Out
CPU
Latching
Relays
Latching
Relays
COM
(RS232)
LTC/IRIG
In
6 dB
attenuatorn
on 3G/HD/
SD
Figure 1-1: 5601ACO2 Block Diagram

Model 5601ACO2 Automatic Changeover Unit
Page 1-4 Revision 1.2 OVERVIEW
Figure 1-2: Front View of Frame
1.1. HOW TO USE THIS MANUAL
This manual is organized into 5 chapters: Overview, Installation, Operation, Technical Information, and
VistaLINK®Configuration and Control. The overview section provides a brief summary of the
5601ACO2 module as well as features.
Chapter 2 provides a detailed description of rear panel connectors, and how the module should be
connected.
Chapter 3 provides information on automatic changeover operation.
Chapter 4 provides technical information such as specifications and how to update the firmware in the
5601ACO2 module.
Chapter 5 provides information on VistaLINK®configuration.

This symbol is intended to alert the user to important operating
instructions.
The exclamation point within an equilateral triangle is intended to alert the
user to the presence of important safety related operating and maintenance
(Servicing) instructions in this manual.

Model 5601ACO2 Automatic Changeover Unit
INSTALLATION Revision 1.2 Page 2-1
2. INSTALLATION
2.1. REAR PANEL
Figure 2-1: 5601ACO2 Rear Panel
The following sections describe the purpose of the rear panel connectors of the 5601ACO2. Sections
2.1.1 to 2.1.4 describe the specific signals that should be connected to the 5601ACO2. Sections 2.4
and 2.5 give more detail on connecting the system.
2.1.1. Coaxial Connections
There are 18 groups of 3 BNC connectors on the 5601ACO2 rear panel. In each group there is one
labelled A, and another labelled B for connection of the indicated signal from the respective 5601MSC
Master Clock/SPG. The BNC labelled OUT provides the output from the auto-changeover unit for
further distribution throughout your company.
DARS OUT: This group of BNC connectors is for connecting the Digital Audio Reference
Signal (DARS) outputs.
AES OUT: This group of BNC connectors is for connecting the Unbalanced AES Audio
outputs.
SYNC 1 to 6:These groups of BNC connectors are for connecting the sync pulse / colour
black outputs.
SD/HD/3G SDI:These groups of BNC connectors are for connecting the HD Test signal
generator outputs.
ANALOG TG:This group of BNC connectors is for connecting the Analog Video Test signal
generator outputs.
10 MHz: This group of BNC connectors is for connecting the 10 MHz outputs.
WORD CLOCK: This group of BNC connectors is for connecting the Word Clock outputs.

Model 5601ACO2 Automatic Changeover Unit
Page 2-2 Revision 1.2 INSTALLATION
2.1.2. Balanced AES, DARS and Analog Audio Connections
DARS/AES/ANALOG: These 16 pin terminal strips are for connecting the balanced version of
the AES and DARS signals as well as two balanced analog audio signals. The
output cables can be secured into the removable portion of the terminal strips
using a small screwdriver. The removable part of the terminal strip is then
inserted into the rear panel and secured using the hold down screws. The pinout
of these connectors is shown in Table 2-1.
DARS + AES2 + AES1 + GND GND GND RIGHT - RIGHT +
DARS - AES2- AES1 - GND GND GND LEFT - LEFT +
Table 2-1: DARS/AES/ANALOG Terminal Strip Pin Definitions
2.1.3. Linear Time Code, Syncro and GPIO Connections
AUX I/O: These two 15 pin male ‘D’ connectors contain GPI inputs and outputs and two
LTC outputs from the 5601MSC units and should be connected to the AUX I/O
Connectors on the respective 5601MSC units using the straight through 15 pin
cables provided. The pinout of the AUX I/O connector is as follows:
Pin # Name Description
1
LTC IN+
LTC + input to 5601MSC
2
LTC1+
LTC 1 + output from 5601MSC
3
LTC2+
LTC 2 + output from 5601MSC
4
GPO1
GPO 1 output from 5601MSC
5
GPO2
GPO 2 output from 5601MSC
6
GND
Signal Ground
7
GND
Signal Ground
8
STXA
Syncro TX from A
9
STXB
Syncro TX to B
10
GND
Signal Ground
11
LTC IN-
LTC - input to 5601MSC
12
LTC1-
LTC 1 – output from 5601MSC
13
LTC2-
LTC 2 - output from 5601MSC
14
GPI1
GPI 1 input to 5601MSC
15
GPI2
GPI 2 input to 5601MSC
Note that on the B connector, 8 is TX from B, and 9 is TX to A.
Table 2-2: AUX I/O Pin Definitions
LTC 1 OUT, LTC 2 OUT: These two male XLR connectors provide the balanced LTC1 and LTC2
time code outputs from the changeover.
ACO CTRL/STATUS:The top row of the 16 pin terminal strip has two GPI inputs to control the
5601ACO2 and two GPI Outputs that provide tallies to indicate the status of the
5601ACO2.

Model 5601ACO2 Automatic Changeover Unit
INSTALLATION Revision 1.2 Page 2-3
MSC: The bottom row of the 16 pin terminal strip has the two GPI Outputs from the A and B
5601MSC units and a pair of GPI inputs that will be connected to both the A and B 5601MSC
units.
The cables can be secured into the removable portion of the terminal strips using a small
screwdriver. The removable part of the terminal strip is then inserted into the rear panel and
secured using the hold down screws. The pinout of this connector is shown in Table 2-3.
GND GND ACO GPI1 ACO GPI2 GND GND
ACO
GPO1 ACO
GPO2
GND GND MSC A
GPO1 MSC A GPO2 MSC B GPO1 MSC B GPO2
MSC A &
B GPI1 MSC A &
B GPI2
Table 2-3: ACO CTRL/STATUS and MSC GPIO Terminal Strip Pin Definitions
2.1.4. Ethernet Connections
The 5601ACO2 can be configured using the VistaLINK®-C Configuration tool connected by Ethernet.
(See section 5.1 for information on configuring the IP address of the 5601ACO2 and section 5.1.1 for
information about installing and using the VistaLINK®software)
The 5601ACO2 is designed to be used with either 10Base-T (10 Mbps) or 100Base-TX (100 Mbps)
also known as Fast Ethernet, twisted pair Ethernet cabling systems. When connecting for 10Base-T
systems, category 3, 4, or 5 UTP cable as well as EIA/TIA – 568 100ΩSTP cable may be used. When
connecting for 100Base-TX systems, category 5 UTP cable is required. The cable must be “straight
through” with a RJ-45 connector at each end. Make the network connection by plugging one end of
the cable into the RJ-45 receptacle of the 5601ACO2 and the other end into a port of the supporting
hub.
The straight-through RJ-45 cable can be purchased or can be constructed using the pinout information
in Table 2-4. A colour code wiring table is provided in Table 2-4 for the current RJ 45 standards (AT&T
258A or EIA/TIA 258B colour coding shown). Also refer to the notes following the table for additional
wiring guide information.
Pin
1
Pin #
Signal
EIA/TIA 568A
AT&T 258A or
EIA/TIA 568B
10BaseT
or 100BaseT
1
Transmit +
White/Green
White/Orange
X
2
Transmit –
Green/White or White
Orange/White or Orange
X
3
Receive +
White/Orange
White/Green
X
4
N/A
Blue/White or Blue
Blue/White or Blue
Not used (required)
5
N/A
White/Blue
White/Blue
Not used (required)
6
Receive –
Orange/White or Orange
Green/White or Green
X
7
N/A
White/Brown
White/Brown
Not used (required)
8
N/A
Brown/White or Brown
Brown/White or Brown
Not used (required)
Table 2-4: Standard RJ45 Wiring Colour Codes

Model 5601ACO2 Automatic Changeover Unit
Page 2-4 Revision 1.2 INSTALLATION
Note the following cabling information for this wiring guide:
•Only two pairs of wires are used in the 8-pin RJ 45 connector to carry Ethernet signals.
•Even though pins 4, 5, 7 and 8 are not used, it is mandatory that they be present in the cable.
•10BaseT and 100BaseT use the same pins; a crossover cable made for one will also work with the
other.
•Pairs may be solid colours and not have a stripe.
•Category 5 cable must use Category 5 rated connectors.
The maximum cable run between the 5601ACO2 and the supporting hub is 300 ft (90 m). The
maximum combined cable run between any two end points (i.e. 5601ACO2 and PC/laptop via network
hub) is 675 feet (205 m). When you have connected the 5601ACO2 and set up the IP address you
should ‘ping’ the device from your PC to make sure that it is connected correctly.
2.1.5. Power Connections
LINE: The 5601ACO2 has redundant universal power supplies operating on 100 to 240VAC,
60 or 50 Hz.
2.2. MOUNTING
The 5601ACO2 is equipped with rack mounting angles and fits into a standard 19 inch by 1 3/4 inch
(483 mm x 45 mm) rack space. The mounting angles may be removed if rack mounting is not desired.
Care must be taken to ensure that the side exhaust vents have a 2” (5cm) clearance to allow for proper
cooling of the unit. The unit may overheat if cables or brackets are blocking the fan exhaust.
2.3. POWER REQUIREMENTS
Power requirements are 100 to 240 volts AC at 50 or 60 Hz. The 5601ACO has redundant universal
power supplies that automatically sense the input voltage. Power should be applied by connecting a 3-
wire grounding type power supply cord to each of the power entry modules on the rear panel. The
power cord should be minimum 18 AWG wire size; type SVT marked VW-1, maximum 2.5 m in length.
CAUTION -
To reduce the risk of electric shock, grounding of the centre pin
of the mains plug must be maintained.

Model 5601ACO2 Automatic Changeover Unit
INSTALLATION Revision 1.2 Page 2-5
2.4. 5601MSC CONNECTIONS
The 5601MSC unit connected to the A inputs of the 5601ACO2 will be called Master A. The 5601MSC
unit connected to the B inputs of the 5601ACO2 will be called Master B.
Telephone Line
LTC 1 Out
LTC 2 Out
GPS Antenna
Computer
Reference Out
Ethernet - NTP
Reference Out
GPS Antenna
Telephone Line
LTC 1 Out
LTC 2 Out
Computer
Ethernet - NTP
Ethernet - SNMP
Reference In
Ethernet - SNMP
Reference In
LTC Input
LTC 1 Out
LTC 2 Out
Computer
Audio Out
GPI/GPO
Figure 2-2: Redundant Master Clock/SPG with Auto Changeover System Diagram

Model 5601ACO2 Automatic Changeover Unit
Page 2-6 Revision 1.2 INSTALLATION
2.4.1. Sync Outputs
Connect the six Sync outputs of the Master A 5601MSC unit to the A Sync inputs of the 5601ACO2.
Connect the six Sync outputs of the Master B 5601MSC unit to the B Sync inputs of the 5601ACO2.
Connect the Sync outputs of the 5601ACO2 to your plant distribution amplifier system.

To ensure proper signal detection and distribution, terminate each sync output
with 75
Ω
(for example at the input of a distribution amplifier). If a sync output is
double terminated or un-terminated (as may be the case when the signals are
directly connected to a patch panel), the 5601ACO2 will hunt for a good input
signal by switching back and forth between input A and B. The flashing LEDs
will indicate the Sync output at fault.
2.4.2. 10 MHz Output
Connect the 10 MHz output of the Master A 5601MSC unit to the A 10 MHz input of the 5601ACO2.
Connect the 10 MHz output of the Master B 5601MSC unit to the B 10 MHz input of the 5601ACO2.
Connect the 10 MHz output of the 5601ACO2 to your plant 10 MHz reference system.
2.4.3. Word Clock Output
Connect the Word Clock output of the Master A 5601MSC unit to the A Word Clock input of the
5601ACO2. Connect the Word Clock output of the Master B 5601MSC unit to the B Word Clock input
of the 5601ACO2. Connect the Word Clock output of the 5601ACO2 to your plant Word Clock
distribution amplifier system.
2.4.4. Unbalanced DARS AES1 and AES2 Outputs
Connect the unbalanced DARS, AES1 and AES2 outputs of the Master A 5601MSC unit to the A
DARS AES1 and AES2 inputs of the 5601ACO2. Connect the unbalanced DARS AES1 and AES2
outputs of the Master B 5601MSC unit to the B DARS, AES1 and AES2 inputs of the 5601ACO2.
Connect the DARS AES1 and AES2 outputs of the 5601ACO2 to your plant’s unbalanced AES
distribution amplifier system.
2.4.5. Balanced DARS, AES1, AES2 and Analog Audio Outputs
Connect the balanced DARS, AES1, AES2 and analog audio outputs of the Master A 5601MSC unit to
the A DARS, AES1, AES2 and analog audio input terminal strip of the 5601ACO2. Connect the
balanced DARS, AES1, AES2 and analog audio outputs of the Master B 5601MSC unit to the B DARS,
AES1, AES2 and analog audio input terminal strip of the 5601ACO2. Connect the DARS, AES1, AES2
and analog audio output terminal strip of the 5601ACO2 to your plant balanced AES and analog audio
distribution amplifier systems. The cables can be secured into the removable portion of the terminal
strips using a small screwdriver. The removable part of the terminal strip is then inserted into the rear
panel and secured using the hold down screws.