Nielsen 1000-1161 series Technical Document

Equipment Manual:

Encoder 1000-1161

Date: June 2014

Document #: 1050-1475

Revision: F

For Nielsen Audio Encoder Model:

1000-1161-xx 1U SGE Digital Encoder, ROHS Compliant

Distribution of this document outside of Nielsen is subject to Non-Disclosure Agreement.

NIELSEN CONFIDENTIAL AND PROPRIETARY INFORMATION

use only by authorized Nielsen customers. Should you receive a copy of this equipment manual in

error, contact the Nielsen Legal department as indicated on page 8. This equipment manual may not

be reproduced or referenced, in whole or part, without the express written consent of Nielsen. Posting

to any website or FTP site requires the express written consent of Nielsen. This equipment manual

and the information contained within is intended for Nielsen customers or authorized recipients only;

any reference or its use, in whole or part, for any other purpose without express written permission

from Nielsen is expressly prohibited. Nielsen Audio Encoders are covered by one or more U.S. Patent

Numbers and their corresponding international patents, and other patents may be pending. This

equipment manual includes proprietary and technical information which is the intellectual property of

Nielsen. Nielsen and the Nielsen logo are trademarks or registered trademarks of CZT/ACN

Trademarks, L.L.C. Patents: http://www.arbitron.com/home/patents.htm

Any brand names, product names, or titles used or referenced herein are trademarks, trade names

and/or copyrights of their respective holders. All images are used for purposes of demonstration only,

and the entities associated with the products shown in those images are not affiliated with Nielsen in

any way, nor have they provided endorsements of any kind. No permission is given to make use of

any of the above, and such use may constitute an infringement of the holder’s rights.

Equipment Manual: Encoder 1000-1161

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CONFIDENTIAL AND PROPRIETARY INFORMATION

Table of Contents

Nielsen Audio Trademarks Included 6

Contacts 8

Disclaimer and Limitation of Liability 9

Notices 10

1. Introduction 11

1.1. Suggested Placement in Audio Chain 12

2. Installation 13

3. Operations 17

3.1. Initiating Encoding 17

3.2. Immediately After Placing the Encoder On-Air 17

3.3. Bypass Features 17

3.3.1. Power-Off Bypass 18

3.3.2. Master Bypass 18

3.3.3. Bypass Mode Remote Monitor 18

3.3.4. Bypass Mode Remote Control 19

3.4. Alarm Status Remote Monitoring 20

3.5. Theory of Operation for the Status and Control Relays 21

3.6. Using the LCD Menu 23

3.7. Encoder Overheat Behavior 24

4. Audio Input Specification 25

5. Digital SGE Specifications 25

5.1. Digital I/O Interface, XLR 25

5.1.1. Input Data Format and Transmission Standards 25

5.1.2. Connectors 25

5.1.3. Input Characteristics 25

5.1.4. Minimum Input Working Voltage 25

5.1.5. Maximum Input Working Voltage 25

5.1.6. Maximum Absolute Input Voltage 25

5.1.7. Sampling Frequency of Data 25

5.1.8. Range of Input Frequency 25

5.1.9. Output Characteristics 26

5.1.10. Minimum Output Voltage into 11026

5.1.11. Maximum Rise/Fall Time 26

5.1.12. Output Jitter 26

5.1.13. Input to Output Delay 26

5.1.14. Maximum Cable Length 26

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5.2. Digital I/O Interface, BNC 27

5.2.1. Input Data Format 27

5.2.2. Transmission Standard 27

5.2.3. Connectors 27

5.2.4. Input Characteristics 27

5.2.5. Minimum Input Working Voltage 27

5.2.6. Maximum Input Working Voltage 27

5.2.7. Maximum Absolute Input Voltage 27

5.2.8. Sampling Frequency of Data 27

5.2.9. Range of Input Frequency 27

5.2.10. Output Characteristics 27

5.2.11. Output Voltage into 7527

5.2.12. Range of Rise/Fall Time 27

5.2.13. Output Jitter 28

5.2.14. Input to Output Delay 28

5.2.15. Maximum Cable Length 28

5.3. Alarm (relay) Specifications 28

5.3.1. Absolute Maximum Voltage Input 28

5.3.2. Absolute Maximum Current Input 28

5.4. Power Specifications 29

5.4.1. Voltage 29

5.4.2. Current 29

5.4.3. Frequency 29

5.4.4. Connector Type 29

6. General Specifications 30

6.1. Physical Specifications 30

6.1.1. Dimensions 30

6.1.2. Weight 30

6.1.3. BTU Output 30

6.2. Environmental Specifications 30

6.2.1. Temperature Ranges 30

6.3. Date/Time Clock Accuracy 30

Appendix A. Using the Optional Time Decoder Input 31

FCC Disclaimer 38

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CONFIDENTIAL AND PROPRIETARY INFORMATION

Tables

Table 1: DB9 Pinouts for Remote Monitoring of Encode/Bypass Status .....................................16

Table 2: DB9 Pinouts for Remote Control of Encode/Bypass Status ...........................................19

Table 3: DB9 Pinouts for Remote Monitoring of Alarm Status......................................................20

Table 4: Encoder Overheat Behavior ...............................................................................................24

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CONFIDENTIAL AND PROPRIETARY INFORMATION

Figures

Figure 1: Front Panel of Nielsen Audio RoHS Compliant Digital SGE..........................................11

Figure 2: Placement of Nielsen Audio SGE within the Audio Chain.............................................12

Figure 3: Rear Panel of Nielsen Audio RoHS Compliant Digital SGE (with Time Decoder

options installed)................................................................................................................................13

Figure 4: XLR Connection Pinouts ...................................................................................................14

Figure 5: BNC Connectors.................................................................................................................15

Figure 6: DB9 Pinouts for Remote Bypass Monitoring ..................................................................16

Figure 7: DB9 Pinouts for Remote Bypass Control ........................................................................19

Figure 8: DB9 Pinouts for Remote Alarm Status Monitoring.........................................................20

Figure 9: Status and Control Relay Connection Scheme...............................................................22

Figure 10: Rear Panel of Nielsen Audio RoHS Compliant Digital SGE with Time Decoder Option

..............................................................................................................................................................32

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CONFIDENTIAL AND PROPRIETARY INFORMATION

Nielsen Audio Trademarks Included

Arbitron®and third-party trademarks that may appear in this document are included by reference and

can be found at the following website: http://www.arbitron.com/legal/trademark.htm#arb

The following Arbitron®Trademarks are further included in this document by this list:

Mark

Type

ARB-TV™

Arbitron iBoard™

Arbitron Internet Board™

Arbitron® Logo

ArbitrendsSM

Arbitron®

Arbitron Data ExpressSM (ADE)

Arbitron eBookSM

Arbitron Mobile™

Arbitron Mobile Index™

Arbitron Mobile Trends Panels™

Arbitron On Demand™

Arbitron PPM®

Custom CoverageSM

Corporate Roll-UpSM

Get-a-GRiP®

LocalMotion®

Management Reporter™

Maximi$er®

Maximi$er® Plus

MaxQualitativeSM

MEDIAMASTERSM

Media Professional® Logo

Media ProfessionalSM

Media Professional PlusSM

MusicTesterSM

Next Generation Electronic RatingsSM

PD Advantage®

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CONFIDENTIAL AND PROPRIETARY INFORMATION

Mark

Type

PD Advantage® Web

Portable People Meter™

PPM®

PPM Analysis ToolSM

PPM 360™

PPM WeekliesSM

PrintPlus®

PRINTSCANSM

PROSPECTORSM

QUALITAPSM

QualiZip®

RADAR®

RADAR® Logo

Radio County Coverage™

Report DesignerSM

Represent™

Represent. Be Heard. Be Rewarded.™

Represent your community™

REQUESTOR™

RetailDirect®

Retail Profiling SystemSM

RETAIL SPENDING POWERSM (RSP)

Schedule-ItSM

SmartPlus®

SmartReportsSM

SmartPlus Web™

SuperPanelSM

TapMedia®

TrafficLink®

You Can’t Spell Radio Without R.O.I.SM

You Count in the Ratings™

Equipment Manual: Encoder 1000-1161

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CONFIDENTIAL AND PROPRIETARY INFORMATION

Contacts

If you need assistance or have any questions, please contact or call:

United States

For any questions regarding this equipment manual, please contact Nielsen as indicated below:

For Radio:

Email: EncodingOperations@Nielsen.com

Call: 410.312.8123

For Other Media:

Email: USEncoding@Nielsen.com

Call: 410.312.8199

For any URGENT Encoding Equipment Issues, please contact our 24/7 Encoding Issues

Hotline: 800.537.4872

Nielsen

9705 Patuxent Woods Drive

Columbia MD 21046-1572

Outside the United States

For any questions regarding this equipment manual, please contact Nielsen as indicated below:

Email: ProductSupportEngineer[email protected]om

Nielsen

9705 Patuxent Woods Drive

Columbia MD 21046-1572

Legal

For any legal questions regarding this equipment manual, please contact Nielsen as indicated below:

Email: Jam[email protected]om

Nielsen

c/o James Derry, Associate General Counsel and Chief Intellectual Property Officer

9705 Patuxent Woods Drive

Columbia MD 21046-1572

Phone inquiries should be directed to +1.410.312.8680

Equipment Manual: Encoder 1000-1161

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CONFIDENTIAL AND PROPRIETARY INFORMATION

Disclaimer and Limitation of Liability

BY YOUR USE, RECEIPT, AND/OR INSTALLATION OF THE NIELSEN AUDIO ENCODER, YOU

EXPRESSLY ACKNOWLEDGE AND AGREE TO THE FOREGOING:

Disclaimer of Warranties. YOU EXPRESSLY ACKNOWLEDGE AND AGREE THAT USE OF THE

NIELSEN AUDIO ENCODER AND THIS EQUIPMENT MANUAL IS AT YOUR SOLE RISK AND

THAT THE ENTIRE RISK AS TO SATISFACTORY QUALITY, PERFORMANCE, ACCURACY AND

EFFORT IS WITH YOU. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE

NIELSEN AUDIO ENCODER AND THIS EQUIPMENT MANUAL ARE PROVIDED ON AN “AS IS”

AND “WHERE IS” BASIS, WITH ALL FAULTS AND WITHOUT ANY WARRANTIES, PROMISES,

OR REPRESENTATIONS OF ANY KIND, AND NIELSEN HEREBY DISCLAIMS ALL PROMISES,

REPRESENTATIONS, WARRANTIES AND CONDITIONS, EITHER EXPRESS, IMPLIED, OR

STATUTORY, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES AND/OR

CONDITIONS OF MERCHANTABILITY, OF SATISFACTORY QUALITY, OF FITNESS FOR A

PARTICULAR PURPOSE, OF ACCURACY, OF QUIET ENJOYMENT, TITLE, AND NON-

INFRINGEMENT. NIELSEN ALSO DISCLAIMS AND MAKES NO REPRESENTATIONS,

WARRANTIES, OR PROMISES, EXPRESS OR IMPLIED, TO YOU AS TO THE SUCCESS OF

YOUR EFFORTS PURSUANT TO THIS EQUIPMENT MANUAL, OR THE EXERCISE AND USE OF

THE NIELSEN AUDIO ENCODER.

Limitation of Liability. TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT SHALL

NIELSEN BE LIABLE FOR PERSONAL INJURY, OR ANY INCIDENTAL, SPECIAL, INDIRECT, OR

CONSEQUENTIAL DAMAGES WHATSOEVER, INCLUDING, WITHOUT LIMITATION, DAMAGES

FOR LOSS OF PROFITS, LOSS OF DATA, BUSINESS INTERRUPTION OR ANY OTHER

COMMERCIAL DAMAGES OR LOSSES, ARISING OUT OF OR RELATED TO YOUR USE OR

INABILITY TO USE THE NIELSEN AUDIO ENCODER AND/OR THIS EQUIPMENT MANUAL,

HOWEVER CAUSED, REGARDLESS OF THE THEORY OF LIABILITY (CONTRACT, TORT OR

OTHERWISE) AND EVEN IF NIELSEN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH

DAMAGES. IN NO EVENT SHALL NIELSEN'S TOTAL LIABILITY TO YOU FOR ALL DAMAGES

(OTHER THAN AS MAY BE REQUIRED BY APPLICABLE LAW IN CASES INVOLVING PERSONAL

INJURY) EXCEED THE AMOUNT OF ONE HUNDRED DOLLARS ($100.00) IN THE AGGREGATE.

IN ADDITION, NIELSEN SHALL NOT BE SUBJECT TO INJUNCTIVE RELIEF WITH RESPECT TO

THIS EQUIPMENT MANUAL OR NIELSEN AUDIO ENCODER.

YOU EXPRESSLY AGREE THAT THE LIMITATIONS OF LIABILITY SET FORTH HEREIN WILL

APPLY EVEN IF ANY LIMITED REMEDY SPECIFIED IN THIS EQUIPMENT MANUAL IS FOUND

TO HAVE FAILED OF ITS ESSENTIAL PURPOSE.

Equipment Manual: Encoder 1000-1161

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CONFIDENTIAL AND PROPRIETARY INFORMATION

Notices

To Ensure Proper Operation:

DO NOT expose this unit to rain or moisture. ONLY Nielsen Audio authorized service personnel shall

gain access to the inside of the Encoder. DO NOT disconnect the earth ground from the power cord

since this is a very important safety feature. The Encoder should be mounted securely in a rack. The

sides must be free of obstructions to provide adequate airflow through the instrument.

The Encoder contains a lithium battery backup to maintain its internal clock. Specialized tools are

required to replace this part. Under no circumstances should anyone other than Nielsen Audio

authorized service personnel attempt to replace this part.

FAILURE TO INSTALL THE ENCODER IN ACCORDANCE WITH THE SPECIFICATION IN THIS

MANUAL AND/OR FAILURE TO MAINTAIN BROADCAST SIGNALS IN ACCORDANCE WITH

GENERAL INDUSTRY STANDARDS AND SPECIFICATIONS MAY RESULT IN THE ENCODER

NOT OPERATING PROPERLY.

Equipment Manual: Encoder 1000-1161

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CONFIDENTIAL AND PROPRIETARY INFORMATION

1. Introduction

The Studio Grade Encoder (SGE) is a device that inserts inaudible symbols into the audio stream of

broadcasts according to the Critical Band Encoding Technology (CBET) algorithms. The symbols are

easily received and recorded by a Portable People Meter (PPM) when exposed to the encoded

broadcasts.

Nielsen Audio provides a number of different interface models for the SGE. This manual references

models that provide the interface to a digital (AES/EBU) audio chain using industry standard XLR or

BNC connectors.

The Nielsen Audio Encoder listed on the title page of this manual has been designed to meet the

requirements of the European Union's directive 2002/95/EC, commonly known as RoHS (Restriction

of Hazardous Substances) Compliance. This directive restricts the use of certain hazardous

substances in electrical and electronic equipment. RoHS seeks to reduce the amount of hazardous

materials entering electronic products.

2 4 5 6 7 831

Figure 1: Front Panel of Nielsen Audio RoHS Compliant Digital SGE

The front panel of the SGE is pictured in Figure 1, and the front panel features are described below;

1. LED for power status

2. Smart Media Memory Card Interface dust cover. Behind this cover is the Smart Media

Memory Card Interface, which is used for software upgrades.

3. LED for Smart Media Status (Green indicates a valid card is detected)

4. Service Port

5. LED for Encoding Status

6. Two switch controls (primarily for LCD menu screen controls)

7. LCD (Displays operation status)

8. Enable/Bypass dual action push button

Equipment Manual: Encoder 1000-1161

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CONFIDENTIAL AND PROPRIETARY INFORMATION

1.1. Suggested Placement in Audio Chain

Nielsen Audio has worked closely with numerous broadcast entities, including radio, TV and cable,

and has developed recommendations for the Encoder’s optimal operation within your audio chain.

Ultimately, however, decisions regarding placement of the Nielsen Audio Encoder within the audio

chain are the responsibility of each individual broadcast facility.

In AM radio stations, Nielsen Audio recommends that the Encoder is installed after the final audio

processor (i.e. Orban Optimod, Telos Systems’ Omnia, or others) to take advantage of the more

consistent audio leveling found at this point in the broadcast chain. In FM stations, Nielsen Audio

recommends that the Encoder be installed after a pre-processor and before the final audio processor

(i.e. Orban Optimod, Telos Systems’ Omnia, or others). This is because the Encoder cannot operate

on composite audio format output typical of stereo generators. When placing the Encoder after the

audio processor in the signal stream, you should be aware that the signal will undergo an increase in

amplitude roughly equal to 4% modulation. Figure 2 depicts an example of the Encoder placed in the

program audio chain.

The minimum average input level to the Encoder is -20 dBFS (ten percent of Full Scale).

Figure 2: Placement of Nielsen Audio SGE within the Audio Chain

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CONFIDENTIAL AND PROPRIETARY INFORMATION

2. Installation

Follow these steps to add the SGE to your equipment chain. Throughout the installation process,

ensure that all plugs are firmly attached to their corresponding sockets.

1. Place the SGE into a 19” rack in an indoor climate controlled environment. Nielsen Audio

recommends allowing ½” of rack space above and below the Encoder to allow for adequate

ventilation and reduce the chances of overheating. DO NOT block or otherwise impede

airflow through the sides of the instrument.

2. Secure the SGE using screws in each of the four front panel corners.

3. Confirm that the Enable/Bypass push button on the front panel is in the ‘out’ position to put

the Encoder into bypass mode. (See Figure 1)

4. To use the balanced XLR connectors, slide the Select switch on the rear panel to XLR.

To use the unbalanced BNC connectors, slide the Select switch on the rear panel to BNC.

5. Balanced XLR inputs on the SGE are female; thus, the mating XLR cable is required to be

male. The gender for output connections is the reverse of input, as shown in Figure 3.

Figure 3: Rear Panel of Nielsen Audio RoHS Compliant Digital SGE

(with Time Decoder options installed)

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CONFIDENTIAL AND PROPRIETARY INFORMATION

Balanced XLR pinouts for the Nielsen Audio SGE are as follows (See Figure 4):

Pin 1- Shell or ground

Pin 2- High

Pin 3- Low

Figure 4: XLR Connection Pinouts

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The unbalanced BNC connections, (input and output) are female BNC connectors, as shown in

Figure 5.

Figure 5: BNC Connectors

6. IF USING XLR: Connect the male end of an XLR cable to the connector marked IN on the

back of the SGE. Connect the female end of this same cable to the output connector on the

device currently outputting the program material to be encoded.

IF USING BNC: Connect the male end of a BNC cable to the BNC connector marked IN on

the back of the SGE. Connect the other end of this same cable to the output connector on the

device currently outputting the program material to be encoded.

7. IF USING XLR: Connect the female end of an XLR cable to the connector marked OUT on

the back of the SGE. Connect the male end of this same cable to the input connector on the

device to receive the encoded program material.

IF USING BNC: Connect the male end of a BNC cable to the BNC connector marked OUT on

the back of the SGE. Connect the other end of this same cable to the input connector on the

device to receive the encoded program material.

8. Optional: To allow remote monitoring of this Encoder’s bypass and encode modes, use a

DB9 cable to connect a remote bypass device to the male DB9 connector at the back of the

Encoder labeled BYPASS MONITOR. The pinouts on this connector are detailed below:

Pin 3 –Common connection

Pin 4 –Bypass mode (pins 3+4 shorted, 3+7 open)

Pin 7 –Encode mode (pins 3+7 shorted, 3+4 open)

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CONFIDENTIAL AND PROPRIETARY INFORMATION

Table 1: DB9 Pinouts for Remote Monitoring of Encode/Bypass Status

Status = ENCODE

Status = BYPASS

Pin 4

Open to pin 3

Shorted to pin 3

Pin 7

Shorted to pin 3

Open to pin 3

Figure 6: DB9 Pinouts for Remote Bypass Monitoring

The pins are connected to an internal relay of the Encoder. The relay contacts are rated at 0.3A

max, 24VDC.

This outlet also provides access to a bypass mode remote control functionality and an alarm

status remote monitoring functionality. For more information on these features, see Section 3.3.4

and Section 3.4.

9. If the optional Time Decoder Input is enabled: To ensure that the Encoder will synchronize

to the station clock upon boot-up, one of the supported time code sources must be properly

connected to the SGE time code input. For more information, see Appendix “Using the

Optional Time Decoder Input.”

10. Connect the power cord to the SGE to the same plug strip that supplies power to the

instruments that will be connected to the input and output connectors of the SGE. The SGE

will turn on when power is supplied via the power cord.

11. The SGE is shipped with the Enable/Bypass push button on the front panel set in the ‘out’

position to put the Encoder into bypass mode. At initial power-on, the LCD will display

“Bypass Mode Encoder Disabled”. When in bypass mode, the Encoder does not encode

incoming signals, but allows them to pass through to the output unchanged. For more

information, see Section 3.3.2

12. To start encoding, see the instructions in Section 3.1

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CONFIDENTIAL AND PROPRIETARY INFORMATION

3. Operations

3.1. Initiating Encoding

Once the Encoder is connected as described in Section 2, follow these instructions to begin

encoding:

1. Push the Enable/Bypass push button on the front panel to the ‘in’ position to enable Encoding

mode.

2. The LCD will then display “Encoding:” and a station specific message (station information).

3. The Encoding Status LED will display an unblinking green light to indicate normal operation,

and the relays will switch from bypass mode to encoding mode. An audible click may be

heard.

The SGE can be removed from the signal path and put into Bypass mode by pushing the

Enable/Bypass push button on the front panel to the ‘out’ position. This connects the input connectors

directly to their respective output connectors. See Section 3.3.2 for more information.

3.2. Immediately After Placing the Encoder On-Air

IMPORTANT: Before the installation of this Encoder is considered complete, Nielsen Audio requires

that a quality analysis check be performed on the encoded audio. The time required per Encoder is

minimal. Please call your Nielsen Audio contact to arrange this test.

3.3. Bypass Features

In bypass mode, signals input to the SGE pass through the device unchanged. The SGE provides

bypass modes for different circumstances as described in the three sections below.

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3.3.1. Power-Off Bypass

If there is no power applied to the SGE, an internal relay automatically routes the audio input

connectors directly to their respective output connectors, and all input signals pass through the SGE

unchanged.

3.3.2. Master Bypass

While the SGE is powered, pushing the front panel Bypass/Enable push button to the ‘out’ position

causes the SGE to bypass encoding. This effectively routes the audio input connectors to their

corresponding output connectors.

Certain software diagnostic fault detections (including a high temperature warning) can cause the unit

to place itself in bypass mode automatically. In this case, the LCD displays a message describing the

nature of the problem, and the Encoding Status LED on the front panel will change depending on the

nature of the problem.

When the SGE is in bypass mode with no errors, the Encoding Status LED on the front panel remains

dark, and the LCD displays “Bypass Mode Encoder Disabled.”

3.3.3. Bypass Mode Remote Monitor

In addition to providing status information via the front panel LCD display and encoding status LED

indicator, the Encoder provides a means to enable remote monitoring of its status. This is provided

via the DB9 connector on the rear panel of the Encoder. The 3-wire connection will allow another

device to monitor both bypass mode conditions (power off, Enable/Bypass push button position, error

condition) and encoding conditions (normal power-up, bypass mode, enable mode). See Step 8 in

Section 2 for pin-out information.

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CONFIDENTIAL AND PROPRIETARY INFORMATION

3.3.4. Bypass Mode Remote Control

The Encoder provides the means to remotely control whether it is in bypass or enable mode. This is

provided via the DB9 connector on the rear panel labeled BYPASS MONITOR—the same connector

that provides the remote monitor capability. (See Step 8 in Section 2) To use this feature, connect a

5-20V DC positive terminal to pin 1 and a negative terminal to pin 6 of the rear panel DB9 connector.

Do not exceed 24V across pins 1 and 6.

The pinouts that support the bypass remote control are detailed below.

Table 2: DB9 Pinouts for Remote Control of Encode/Bypass Status

BYPASS

ENABLE

Pin 1

DC (5-20V) positive

DC (0 V) positive

Pin 6

DC negative

Figure 7: DB9 Pinouts for Remote Bypass Control

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CONFIDENTIAL AND PROPRIETARY INFORMATION

3.4. Alarm Status Remote Monitoring

The Encoder provides the means to remotely monitor its error status. This is provided via the DB9

connector on the rear panel labeled BYPASS MONITOR—the same connector that provides the

remote monitor capability. (See Step 8 in Section 2)

The pinouts that support remote alarm status monitoring are detailed below.

Table 3: DB9 Pinouts for Remote Monitoring of Alarm Status

Status = NORMAL

Status = ALARM

Pin 5

Open to pin 8

Shorted to pin 8

Pin 9

Shorted to pin 8

Open to pin 8

Figure 8: DB9 Pinouts for Remote Alarm Status Monitoring

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