Wohler AMP1-S8DA, AMP1-S8MDA-3G, AMP2-S8DA, AMP2-S8MDA-3G User Manual

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AMPx-S8 Series

• AMP1-S8DA • AMP1-S8MDA-3G

• AMP2-S8DA • AMP2-S8MDA-3G

8-Channel, Multi-Format, Analog/Digital Audio Monitors

User Guide

Part Number 821030, Revision E

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Licensed users and authorized distributors of Wohler Technologies, Inc. products may copy this document for use with Wohler Technologies., Inc. products provided that the copyright notice above is included in all reproductions.

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Phone: 510-870-0810 FAX: 510-870-0811 US Toll Free: 1-888-596-4537 (1-888-5-WOHLER) Web: www.wohler.com Sales: [email protected] Support: [email protected]

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Even though Wohler Technologies, Inc. has tested its equipment and software, and reviewed the documentation, Wohler Technologies, Inc. makes no warranty or representation, either express or implied, with respect to software, documentation, their quality, performance, merchantability, or fitness for a particular purpose.

Wohler Technologies, Inc. reserves the right to change or improve our products at any time and without notice.

In no event will Wohler Technologies, Inc. be liable for direct, indirect, special, incidental, or consequential damages resulting from any defect in the hardware, software, or its documentation, even if advised of the possibility of such damages.

Some states do not allow the exclusion or limitation for incidental or consequential damages, so the above exclusion or limitation may not apply to you.

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Last Update

June 06, 2011

821030: AMPx-S8 Series User Guide

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Table of Contents

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Introduction ................................................................. vii

Overview................................................................ vii

Topics.................................................................... vii

What’s New................................................................. viii

Functionality Enhancements .......................................... viii

3G........................................................................ viii

Software Termination.............................................. viii

Rear Panel Connector Arrangements ...........................ix

Chapter 1. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Introduction ...................................................................1

Overview..................................................................1

Topics......................................................................1

Unpacking......................................................................2

Safety ...........................................................................2

Important Safety Instructions ..................................... 2

Safety Symbols.........................................................3

FCC Compliance..............................................................3

Installation Recommendations...........................................4

Mounting..................................................................4

Heat Dissipation........................................................4

Sympathetic Vibration................................................4

Mechanical Bracing....................................................5

Connections and Cable Recommendations.....................5

Electrical Interference ................................................5

Power ......................................................................6

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Installation.................................................................... 6

Intial Setup.............................................................. 6

Power Up................................................................. 6

Chapter 2. System Overview . . . . . . . . . . . . . . . . . . . . . . . 7

Introduction................................................................... 7

Overview................................................................. 7

Topics ..................................................................... 7

Front Panel Controls........................................................ 8

Features and Simple Controls..................................... 8

LCD Screen.............................................................10

User Interface.........................................................11

Multi-Mode Color Codes ......................................11

Menu Navigation................................................12

Rear Panel Connectors ...................................................13

Input Connectors.....................................................13

Output Connectors...................................................15

Programming and Remote Access Connectors..............18

RS-232 Connectors ............................................18

Remote Connector .............................................18

Rotary Switch Connectors.........................................19

Monitoring Inputs..........................................................20

System Overview.....................................................20

Monitoring an Analog Input.......................................20

Monitoring an AES Input...........................................21

Monitoring an SDI Input ...........................................21

Channel Selection and Mixing .........................................22

Chapter 3. Audio Configuration . . . . . . . . . . . . . . . . . . . . 23

Introduction..................................................................23

Overview................................................................23

Topics ....................................................................23

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Analog Output Preference...............................................24

Monitoring and Mixing Modes..........................................25

Arbtrary Mixing .......................................................25

Single....................................................................26

Pairs......................................................................26

Downmix................................................................27

Muting the Speakers......................................................29

Phase Correlation..........................................................30

SDI Inputs ...................................................................31

Selecting SDI Groups and Subgroups .........................31

Configuring for SDI Delay ........................................32

Selecting the Input Signal ..............................................33

Setting the Monitor’s Startup Configuration.......................34

Terminating/Unterminating Inputs ...................................35

Chapter 4. Presets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Introduction .................................................................37

Overview................................................................37

Topics....................................................................37

What are Presets? .........................................................38

Methods of Accessing the Presets ....................................38

Setup Menu............................................................38

Preset Mode............................................................38

Enabling/Disabling Preset Mode ...........................39

Recalling a Preset ..............................................39

Speaker Assign/Preset Buttons

(Presets 1 through 4 Only) .......................................39

Saving a Preset .................................................40

Recalling a Preset ..............................................40

Overwriting a Preset ..........................................40

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Chapter 5. Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Introduction..................................................................43

Overview................................................................43

Topics ....................................................................43

Accessing Setup Mode....................................................44

Analog Output Preference Mode.......................................46

Recalling a Preset..........................................................46

Saving a Preset.............................................................47

Creating a New Preset .............................................48

Overwriting an Existing Preset...................................49

Preset Mode..................................................................51

Erasing a Preset ............................................................51

SDI Delay.....................................................................52

Startup ........................................................................53

Surround Gain ..............................................................53

Bitstream Detection.......................................................54

Phase Bits ....................................................................55

Chapter 6. Features and Specifications . . . . . . . . . . . . . . 57

Introduction..................................................................57

Overview................................................................57

Topics ....................................................................57

Features.......................................................................58

Common Features....................................................58

Model Dinstinctions..................................................58

Specifications................................................................59

Technical Functional Overview.........................................60

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Introduction

Overview

The preface lists the new features and functionality for this release.

Topics

Topics Page

What’s New viii

Preface

Functionality Enhancements viii

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Preface

What’s New

This release provides several changes and functionality enhancements:

• 3G functionality (now available in 1RU!)

• Signal termination moved to software control

• Bitstream Detection on page 54

• Phase Bits on page 55

Functionality Enhancements

In adding the 3G functionality, we have also discontinued the MDA models as shown in the following table:

Old Version

AMP1-S8MDA AMP1-S8MDA-3G AMP2-S8MDA AMP2-S8MDA-3G

Moreover, we are replacing some similar products as well that may also include other changes.

Old Version

AMP1-S8DA (PN 8101-0030) AMP1-S8DA (PN 8101-0110) AMP2-S8DA (PN 8103-0020) AMP2-S8DA (PN 8102-0060)

Software Termination

New Version Replacement

Suggestions

New Version Replacement

Suggestions

In this release, all terminations are no longer on the rear panel; they are now controlled by the software. Refer to Terminating/Unterminating

Inputs on page 35 for details.

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Functionality Enhancements

Rear Panel Connector Arrangements

Note that in the process of redesigning the AMPx-S8 Series monitors, we have rearranged the rear panels. Refer to Appendix A on page 67 for remapping information.

Preface

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Page 11

Introduction

Overview

This chapter describes the front panel controls and the rear panel connectors in detail. It also describes how to use the front panel user interface for data display and system configuration. Configuration procedures are covered in detail in Chapter 3 on page 23.

CHAPTER 1

Installation

Topics

Topics Page

Introduction 1 Unpacking 2 Safety 2 FCC Compliance 3 Installation Recommendations 4 Installation 6

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Chapter 1 Installation

Unpacking

Unpack the AMPx-S8 Series monitor and inspect for any apparent physical damage that may have occurred in transit. If the unit has been damaged, contact Wohler customer support for assistance. (Wohler’s contact information is on page ii of this document.)

In addition to the monitor, the package should contain:

• A CDROM containing the product’s user guide,

• A power cord, and

• A warranty card

Note:

We recommend you retain the shipping carton for future use.

Safety

Important Safety Instructions

1. Read, keep, and follow all of these instructions; heed all warnings.

2. Do not use this equipment near water, rain or moisture.

3. Use only a dry cloth to clean the equipment.

4. Do not block any ventilation openings. Install only in accordance

with the instructions in Installation Recommendations on page 4.

5. Do not install near any heat source such as a radiator, heat register,

amplifier, or stove.

6. Do not attempt to plug the unit into a two-blade outlet (with only

two prongs of equal width).

IMPORTANT:

821030: AMPx-S8 Series User Guide

By design, these monitors will only plug into a three-prong outlet for your safety. If the plug does not fit into your outlet, contact an electrician to replace the obsolete outlet.

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Chapter 1 Installation

FCC Compliance

7. Protect the power cord from being walked on or pinched,

particularly at plug’s source on the equipment and at the socket.

8. Use only the attachments/accessories specified by the

manufacturer.

9. Unplug the equipment during lightning storms or when unused

for long periods of time.

10. Use of a cart is neither recommended nor approved by Wohler.

11. Refer all servicing to qualified service personnel. Servicing will be

required under all of the following conditions:

• The equipment has been damaged in any way, such as when

the power-supply cord or plug is damaged.

• Objects have fallen onto the equipment; or the equipment has

been exposed to rain or moisture, or liquid has been spilled onto the equipment.

• The equipment does not operate normally.

• The equipment has been dropped.

Safety Symbols

WARNING:

The symbol to the left warns of electric shock hazard inside the unit. Disconnect the power cord before removing access panels when installing upgrades. Only qualified service personnel are to operate the equipment with covers removed, and are to exercise caution to avoid personal injury.

FCC Compliance

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

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Chapter 1 Installation

Installation Recommendations

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.

Installation Recommendations

Mounting

The unit is designed to install into a standard 19" rack mounted at ear level for best high frequency response and visual observation of the monitor screen. Please adhere to the following clearances:

Clearance Surface

24” Front

3” Rear 2” Sides

1.75” Top and Bottom (if either radiates heat) 0” Top and Bottom (if no heat)

Heat Dissipation

The ambient temperature inside the mounting enclosure should not exceed 40° Celsius (104° Fahrenheit). Adjacent devices can be rack mounted (or stacked) in proximity to the unit if this temperature is not exceeded. Otherwise, allow a 1RU (1.75”/44.45mm) space above and below the unit for air circulation.

Important:

To reduce noise, the monitor does not have any fans. As a result, the heat generated by the class D power amplifiers, power supplies, and other components is vented by slots in the side of the unit. Therefore, as a safety precaution, you must allow proper ventilation on both sides of the unit.

Sympathetic Vibration

Sympathetic vibration from other equipment (cables, etc.,) in the rack may be serious enough to interfere with the unit’s sound quality. The

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Chapter 1 Installation

Installation Recommendations

use of thin card stock and/or felt or foam weather-stripping type materials between adjacent vibrating surfaces, or tying up loose cables, etc., may be required to stop vibrations external to the unit.

Mechanical Bracing

Even though the 2U models are fairly heavy, the chassis is securely attached to the front panel. In addition, the chassis has mounting tabs through which you attach it to the rack rail. This feature will reduce or eliminate rear bracing requirements in many mobile/portable applications. The weight of internal components is distributed fairly evenly around the unit.

Connections and Cable Recommendations

We recommend that you limit the length of the cables that you use for feeding HD-SDI signals sources to the HD-SDI inputs of the AMPx-E8 Series units and that you use a Belden 1694A cable (or equivalent).

Note:

The connections of all DB-25 connectors are compatible with Tascam DB-25 to XLR cable assemblies. Consult the factory for availability. All rear panel connectors are female except for the XLR connectors.

Table 1–1 Cable Length Limit Recommendations

Signal Type

SD 300 984 HD 150 492 3G 22 75

Electrical Interference

Be careful to apply proper input termination settings and avoid mismatched cable types and other similar causes of undesired reflections in digital signal systems. If severe enough, such reflections can result in corruption of the digital data stream. As with any audio equipment, maximum immunity from electrical interference requires the use of shielded cable; however, satisfactory results can sometimes be obtained without it. The internal circuitry ground is connected to the chassis.

Maximum Length

Meters Feet

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Chapter 1 Installation

Installation

Power

The unit comes with a standard 24VDC/3.0 A internal power supply and connects an A/C mains power source (65W, 100 to 240 VAC, 50/ 60Hz) through the IEC connector provided on the rear panel of the unit.

When the mains plug or appliance coupler is used as the disconnect device, the disconnect device should remain operable.

Installation

Intial Setup

Power Up

1. Carefully install the monitor into a standard 19”-rack.

2. Connect all signal cables to and from associated equipment.

3. Connect the power cord from the monitor to A/C mains.

The AMPx-S8 Series monitors are factory-configured so that all settings are non-volatile. When power to the unit is cycled (off/on), the unit will restore itself so that each setting such as channel selection(s), input type, and so on, are automatically restored to the unit’s previous factory setting. However, you can custom configure the monitor to automatically restore your configuration settings on power up. Refer to

Setup Menu on page 43 for details.

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Introduction

Overview

This chapter describes how to install the AMPx-S8 Series monitor into a standard 19”-rack and how to connect the audio cables.

Topics

CHAPTER 2

System Overview

Topics Page

Introduction 7 Front Panel Controls 8 Rear Panel Connectors 13 Monitoring Inputs 20 Channel Selection and Mixing 22

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Chapter 2 System Overview

Front Panel Controls

Features and Simple Controls

Refer to the images in Figure 2–1 and Figure 2–2 on the next page.

In addition, on the AMP1s, the top LED segment of each bar graph serves as the speaker assign LED for the respective channel.

• Speakers: The AMP2s features two mid-range speakers (left and

right) and one woofer speaker. The AMP1s have two woofers. All models of the AMPx-S8 Series contain high performance transducers driven by three power amplifiers. Two amplifier/ driver combinations handle midrange and high frequency information in the left and right (stereo) speaker channels, while the third channel reproduces and sums the left and right channel information below the crossover point in the woofer (bass) speaker. Note that the woofer channel is not a dedicated LFE (sub-woofer) or center channel.

• Level Meters (1 through 8): Source channels 1 through 8 are

displayed through eight audio level meters, four on the left side; four on the right side. These level meters, high-resolution LED bar graph displays and feature a dynamic range of 66 dB with PPM dot over VU bar ballistic characteristics.

• Headphones (1/4” Jack): Select the headphone audio sources as

you would for the internal speakers. When you plug in headphones the speakers will mute.

• Volume (Rotary Knob): This control adjusts the loudness of the

audio reproduced by the internal speaker channels or connected headphones.

• Balance (Rotary Knob): This control adjusts the volume balance

between the left and right speaker channels. Note that this control attenuates the signal from the source, so that the left and right bass frequencies (summed together and reproduced in the woofer channel) will respond to balance adjustments in tandem with the left and right speaker channels.

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Chapter 2 System Overview

Front Panel Controls

Figure 2–1 The AMP1-S8 Series Front Panel

Figure 2–2 The AMP2-S8 Series Front Panel

CH1 AES1 CH2

Speakers

Level

Meters

Headphones Speaker AssignVolume LCD Screen Balance

Left Down/Pairs

Left Up/Single

Right Down/Enter

Right Up/Escape

Brightness

Mute

Phase/Function

Group/Setup

Input/Downmix

Speaker Assign/ Presets

Top segment of each level meter acts as a speaker assign indicator.

Speakers

Speaker Assign/ Presets

Meters/Speaker Assign LEDs

Speaker Assign

Headphones

Meters/Speaker AssignLEDs

Volume

LCD Screen

Balance

Brightness (R)

Pairs/Left Down

Left/Single/Up Right Down/Enter

Right/Escape

Brightness (L)

Mute

Phase/Function

Group/Setup

Input/Downmix

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Chapter 2 System Overview

Front Panel Controls

• Level Meter Brightness (Potentiometers, Left and Right): Use a

small slot screwdriver to adjust the brightness of the bar graph meters using these two recessed trim pot controls. The left control adjusts the brightness of the left four LED bar graphs and the right control adjusts the brightness of the right four bar graphs. Clockwise rotation increases the brightness.

• Speaker Assign LEDs (1 through 8, Left and Right): These LEDs

• Speaker Assign/Preset Buttons (Speaker Assign, 1 through 8;

LCD Screen

The LCD screen displays various parameters and settings, and is also used to configure/program the monitor. The features of the LCD screen (shown in Figure 2–3 through ) include:

Note:

The AMP1s only have one brightness control.

indicate the speaker mix of selected channels. The speaker assign LEDs are located above each of the 53-segment bar graphs.

Note:

In the AMP1s, the speaker assign LEDs are the top segment of the meters.

Preset Buttons, 1 through 4): Pressing any of these buttons selects the channels to be summed into either or both speaker channels, or to create and recall presets when used in conjunction with the

button. Refer to Chapter 4 on page 37 for more information about presets.

• Mix Status: Displayed on the top right and top left corners of the

LCD screen, the

Mix Status indicates how the current input signal

is mixed to the internal speakers.

• Source Status: Displayed in the top center of the LCD screen, the

Source Status indicates the current signal type and current input

currently audible in the internal speakers. If a preset has been recalled, this area displays the name of the preset until a monitoring or input change is made.

• SDI Groups: Displayed in the bottom left and bottom right corners

of the LCD screen, these groups indicate the SDI channels that are currently mixed to the internal speakers.

• Input Lock Status (Digital Inputs Only): Displayed in the center of

bottom line, the

Input Lock Status shows the lock status of the

selected digital input(s). If any input channel pairs are not locked,

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Chapter 2 System Overview

MIX HD.SDI1 MIX

5 7

-- 6 8

GP3

GP4

Source Status

(HD-SDI Input 1)

Mix Status

(Custom)

Mix Status

(Custom)

Input Lock Status

(Channels 1 through 4 Not Locked;

Channels 5 through 8 Locked)

SDI Group (Group #4)

SDI Group (Group #3)

Front Panel Controls

then they will display as short dashes. Each dash (-) indicates a position for displaying the channel pairs available for monitoring

from left to right: 1/2, 3/4, 5/6 and 7/8. The unit updates the Input

Lock Status

whenever it detects a signal change. See Figure 2–3

and below for an example.

Figure 2–3 Status Display Example: Standard Input

Source - HD-SDI Input 1

User Interface

Multi-Mode Color Codes

Most of the user interface buttons are multi-functional. They affect the unit differently depending on whether they are used alone or in combination with another button. The monitor’s front panels have color-coded legends to help identify the different functions of each button:

• White indicates normal operation.

Table 2–1 White Control Functionality

Button Setup Mode Single-Channel Mode Pair Mode

Attaches the left

Left Up

Left Down

Selects the next option for any given menu.

Selects the previous option for any given menu.

speaker to the next higher-numbered channel.

Attaches the left speaker to the next lower-numbered channel.

Selects the next higher-numbered pair.

Selects the next lowernumbered pair.

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Chapter 2 System Overview

Front Panel Controls

Table 2–1 White Control Functionality (Continued)

Button Setup Mode Single-Channel Mode Pair Mode

Right Up

Right Down

Like an “Escape” key: Cancels and returns to the previous menu option

Like an “Enter” key: Accepts changes, or drills deeper into the menu structure.

Attaches the right speaker to the next higher-numbered channel.

Attaches the right speaker to the next lower-numbered channel.

Selects the next higher-numbered pair.

Selects the next lowernumbered pair.

• Blue for functions controlled by the Fn button.

Table 2–2 Blue Control Functionality

Button Functionality

Fn + Single

Fn + Pairs

Fn + Downmix Fn + Setup

Selects single channel monitoring mode: one channel per speaker, selected independently

Selects pair monitoring mode: one channel per speaker, selected pair by pair

Selects downmix mode: one of several available downmixes

Displays the Setup menu

• Yellow indicates the button functions for the

Setup menu. Refer to

Chapter 5 on page 43 for more details about using the Setup menu

for system configuration.

Table 2–3 Yellow Control Functionality

Button Functionality





Esc Enter

Displays the previous menu item Displays the next menu item Returns to the previous menu and cancels

changes Returns to the previous menu and saves changes

Menu Navigation

When making changes to the Setup menu, you will generally press the

Enter button to select menu options and settings, and press the Esc

(Escape) normal operation.

button to back out of the menu, setting, or display to return to

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Rear Panel Connectors

• Analog In (DB-25-F): This connector accepts balanced, low

impedance, line level analog signals. See Figure 2–4 below for pinout information.

Figure 2–4 Analog Input Connector Pin-Out

Chapter 2 System Overview

Rear Panel Connectors

Input Connectors

• Power: Attach a standard IEC-320 power cord between this

connector and AC mains power.

• AES/PCM In (1 through 4, BNC-F): These connectors accept

unbalanced (75 ) PCM (AES/EBU) formatted signals. These inputs appear as AES1 in the LCD screen.

If you are not connecting downstream equipment, then you should terminate the selected input connector. Otherwise, unterminate them.

• AES/PCM In (and Loop Out) (DB-25-F): This connector accepts

balanced (110 ) AES signals. Inputs are internally connected to the loop-through outputs. These inputs are referred to as AES2 in the LCD screen. If you are connecting downstream equipment to the AES loop-through outputs of this connector, then you should unterminate this connector. If you are not connecting downstream equipment, then you should terminate them. Refer to Terminating/

Unterminating Inputs on page 35 for details.

Note:

The pin-out for this connector is compatible with Tascam DB-25 to XLR cable assemblies. Contact your Wohler sales representative for availability. (Wohler’s contact information is on page ii of this document.)

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Chapter 2 System Overview

Rear Panel Connectors

Figure 2–5 The AMP1-S8MDA-3G Rear Panel

Figure 2–6 The AMP2-S8MDA-3G Rear Panel

Power

SDI Option 2

SDI In (1 & 2)

SDI Re-Clocked Out

Reference

AES Bal In & Loop Out

AES/PCM In (1 thru 4)

Analog In

Selected/Downmix

Analog Out (L&R)

Standard Unbalanced AES Out (HD-15) can be replaced with Balanced AES Out from SDI (DB-25) shown.

Metered Analog Out

RS-232C

RS-232 A

Power

RS-232C

SDI In (1 & 2)

SDI Re-Clocked Out

Ref

AES Bal In &

Loop Out

Analog In

Selected/Downmix

Analog Out (L&R)

Remote

Metered Analog Out

AES/PCM In (1 thru 4)

RS-232A

Opt 2

Standard Unbalanced AES Out (HD-15) can be replaced with Balanced AES Out from SDI (DB-25) shown.

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Chapter 2 System Overview

Rear Panel Connectors

Figure 2–7 AES/PCM Input and Loop-Through

DB-25 Pin-Out

• 3G/HD/SD-SDI In (1 and 2, BNC-F): These inputs accept SDI video

signals for the 3G models.

Note:

Output Connectors

• Metered Analog (DB-25): This connector outputs the analog signal

that is displayed on the front panel level meters. The pin-out

information for this DB-25 is identical to that of the Analog Input

connector. See Figure 2–5 on page 14.

Note:

The DA model does not feature SDI capability.

The Analog Output Preference (AOutputPref) entry

within the Setup Menu determines how this connector

outputs the speaker assignment when a DM1, DM2, or DM3 downmix selection is enabled. The default setting is Downmix, which outputs the metered signal with individual channel scaling (gain settings) intact as determined by the selected downmix (DM1, DM2, or DM3). If Discrete is selected, then all metered channels are output from these connectors at unity gain. See Analog Output Preference Mode on page 46 for information on how to set this parameter.

• 3G/HD/SD-SDI Re-Clocked Out (BNC): This connector outputs a

re-clocked copy of the SDI signal fed to the SDI input connector selected for monitoring. When an SDI input is not selected for monitoring in the unit, this output by default.

• AES Unbalanced Out from SDI (HD-15): This connector outputs

de-embedded audio. The last SDI input and group selection

SDI In 2 will be reclocked and connected to

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Chapter 2 System Overview

Rear Panel Connectors

determine which audio pairs are de-embedded on these 75 , unbalanced, AES outputs. No other monitoring function affects these outputs.

The pinout of this connector is the same as that for a standard VGA cable. VGA cables may be used to break out the HD-15 connectors into separate BNCs.

Note:

The DA model does not feature SDI capability.

Table 2–4 VGA Connector Pin-Out

SDI Channels Cable Color/Function

1 and 2 Red 3 and 4 Green 5 and 6 Blue 7 and 8 Grey/H-Sync. Not Used Black/V-Sync.

Figure 2–8 AES Unbalanced Out from SDI

HD-15 Pin-Out

Note:

You must specify either the balanced (DB-25) or the default unbalanced (HD-15) output connector at the time you place your order.

• (Optional) Balanced AES Output from SDI Input (DB-25): This

connector outputs de-embedded audio. The last SDI input and group selection determine which audio pairs are de-embedded on these 110 , unbalanced, AES outputs. No other monitoring function affects these outputs.

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Chapter 2 System Overview

Rear Panel Connectors

Figure 2–9 AES Balanced Out from SDI

DB-25 Pin-Out

• Selected Downmix/Analog Out (Left and Right, XLR-M): These

connectors are balanced analog outputs of the speaker assign (or downmix) source as selected for the left and right speaker channels. See the pin-out diagram in Figure 2–10 on page 17.

Figure 2–10 XLR-M Pin-Out

• AES Bal In/Loop Out (DB-25): This connector contains both inputs

and looped outputs. Refer to AES/PCM In (and Loop Out), page 13 for a full description.

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Chapter 2 System Overview

Rear Panel Connectors

Programming and Remote Access Connectors

RS-232 Connectors

Figure 2–11 RS-232 Pin-Out

• RS-232 A (DB-9): This connector is used for downloading

programming, setup, and diagnostic information into and out of the main board.

• RS-232 B (DB-9): Not Used

• RS-232 C (DB-9) (not available on the DA models): This connector

is used for downloading programming, setup, and diagnostic information into and out of the 3G card.

Remote Connector

Remote (DB-9) (2RU models only): When equipped with the optional RC4-4 interface board and configured in software, this connector (not RS-232) provides limited remote control and status reporting with GPI/O signals: four inputs (Controls 1 through 4) and four outputs (Status 1 through 4).

Note:

For more complete information about the functionality of

the Remote connector, contact your Wohler technical

support representative and ask for the documents with part numbers 824016 and 824017.

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Rotary Switch Connectors

• OPT 2 (10-Position Rotary Switch): This recessed 10-position rotary

switch allows for standard operation and software upgrades. Refer to Table 2–5 for the position values.

Table 2–5 OPT 1 and OPT 2 Option Settings and

Descriptions

Position Setting Description

0 thru 7 Operational Mode (Default=1) 8 thru 9 Software Upgrade

• SDI Option (10-Position Rotary Switch): This recessed 10-position

rotary switch that is reserved for future use and should be left at the factory position of 1.

Table 2–6 SDI Option Settings and Descriptions

Chapter 2 System Overview

Rear Panel Connectors

Position Setting Description

0 Not Used - Reserved for Future Use 1 Operational Mode

2 thru 8 Not Used - Reserved for Future Use

9 Software Upgrade

• Ref (10-Position Rotary Switch): This recessed 10-position rotary

switch allows you to set the analog and digital reference levels for the unit’s level meters, as well as to select the software upgrade function. In Table 2–7 below, the analog reference level (analog, left column) is the analog input level needed to activate the bar graph segment at the associated digital reference level (digital, right column) value. This is usually the location on the bar graph level meter where the color transitions from green to amber.

Table 2–7 Reference Setting Values and Definitions

Position

Analog (dBu) Digital (dBFS)

Reference Level Function

0+8

-201+4 20 30 -18 4+6 -9 5+4 -18

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Chapter 2 System Overview

Monitoring Inputs

Table 2–7 Reference Setting Values and Definitions

Position

6 Custom Settings for Alternate Scales 7Not Used 8 9

Example: Choosing position 2 (0 dBu = -20 dBFS) means an analog input level of

0 dBu will light up the LED segment associated with the digital -20 dBFS value on the bar graph meter and also transition from green to amber at that segment.

Analog (dBu) Digital (dBFS)

Reference Level Function

For software Upgrades Only

Monitoring Inputs

System Overview

The following simple instructions will allow you to get your AMPx-S8 Series monitor up and running quickly; that is, you will be able to monitor any single input through the monitor’s internal speakers.

Referring to the AMPx-S8 Series rear panel diagrams (Figure 2–5 and 2–

6 on page 14) and the front panel controls (Figure 2–1 and 2–2 on page

9) follow the instructions below by signal/connector type.

Note:

For a complete description of each front panel control, refer to Front Panel Controls on page 8.

For a complete description of each rear panel connector, refer to Rear Panel Connectors on page 13.

Monitoring an Analog Input

1. To monitor an analog signal, connect the analog input to the rear

panel Balanced Analog In (DB-25) connector.

2. On the front panel, press the Input button until the LCD screen

displays Analog.

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Page 31

3. Continue on to Channel Selection and Mixing on page 22.

Monitoring an AES Input

1. To monitor an AES signal, do one or both of the following:

• Connect an unbalanced AES signal to the rear panel AES/

PCM In

• Connect a balanced AES signal to the rear panel AES Bal In

& Loop Out

2. On the front panel, press the Input button until the LCD screen

displays the corresponding input you want to monitor:

• AES1 for an unbalanced signal (connected to BNC 1).

• AES2 for a balanced signal (connected to the DB-25).

1 (BNC), and/or

(DB-25).

Chapter 2 System Overview

Monitoring Inputs

Table 2–8 AES Input to Channel Relationship

AES BNC Connector Channel Outputs

1 1 and 2 2 3 and 4 3 5 and 6 4 7 and 8

3. Refer to Terminating/Unterminating Inputs on page 35 to check/

set your termination settings.

4. Continue on to Channel Selection and Mixing on page 22.

Monitoring an SDI Input

1. To monitor an SDI signal, do one or both of the following:

• Connect an SDI signal to the rear panel SDI In 1 (BNC), or

• Connect an SDI signal to the rear panel SDI In 2 (BNC).

2. On the front panel, press the

the corresponding input you want to monitor:

• SDI1 for a signal to the

• SDI2 for a signal to the

Input button until the LCD displays

SDI In 1 (BNC), or

SDI In 2 (BNC).

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Chapter 2 System Overview

Channel Selection and Mixing

3. Continue on to Channel Selection and Mixing immediately below.

Channel Selection and Mixing

AES Example:

Note:

The level meters will operate automatically, displaying volume levels for each channel carrying an input signal.

To produce audio through the internal speakers, press each of the

Speaker Assign buttons ( on page 20) until each channel is output

through the speaker of your choice. See Table 2–9.

Table 2–9 Speaker Assign Button Functionality

Button Press LED Color Speaker

1st Steady Green Left

2nd Flashing Green/Amber Both

3rd Steady Amber Right 4th Off Neither

Suppose you are monitoring an AES pair connected to the unbalanced

AES/PCM In 1. When AES1 is selected for input, the left channel of

the AES pair will appear on the meter for Channel 1, and the right on

Channel 2. Press the Speaker Assign button for Channel 1 until the Channel LED turns green. Press the Speaker Assign button for

Channel 2 until the Channel LED turns amber. The left channel of the AES pair now sounds in the left speaker, and the right channel in the right speaker..

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Audio Configuration

Introduction

Overview

This chapter is the “how to” chapter. All topics listed below are sorted alphabetically for easy reference. For information about presets refer to

Chapter 4: Presets on page 37.

Topics

CHAPTER 3

Topics Page

Introduction 23 Analog Output Preference 24 Monitoring and Mixing Modes 25 Muting the Speakers 29 Phase Correlation 30 SDI Inputs 31 Selecting the Input Signal 33 Setting the Monitor’s Startup Configuration 34 Terminating/Unterminating Inputs 35

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Chapter 3 Audio Configuration

848131 3.03

Setup: AOut Pref

-- Setup --

Aout Pref: Discr

-- Setup --

Aout Pref: D-mix

Analog Output Preference

The Analog Output Preference determines how the Selected/

Downmix Analog Output Output

DM2, or DM3 downmix options are selected. Refer to Rear Panel

Connectors on page 13.

The default setting is Downmix, which outputs the speaker assign with individual channel scaling (gain settings) intact as determined by the selected downmix. However, if you select Discrete, then all channels with the downmix are output from these connectors at unity gain without scaling of the channels as determined by the selected downmix.

To change the analog output settings:

1. Hold the Fn button while pressing the Setup button.

connector output the metered signals when either the DM1,

connectors and the Metered Analog

2. Press the Down button until the LCD screens AOutPref as shown

in Figure 3–1 below.

Figure 3–1 Analog Output Preference LCD screen

3. Pressing the Enter button displays either Figure 3–2 or Figure 3–3

depending on the current setting.

Figure 3–2 Analog Output Preference Setting -

Discrete

Figure 3–3 Analog Output Preference Setting -

Downmix

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Chapter 3 Audio Configuration

MIX AES1 MIX

1 3

2 4 - -

Monitoring and Mixing Modes

4. Press either the Up or Down arrow followed by the Enter button

to change the setting, or press the Escape button to leave it as is.

5. Press the Escape button again to return to normal operation.

Monitoring and Mixing Modes

Arbtrary Mixing

1. Press any of the eight speaker assign buttons to activate the mixing

(summing) feature. This mode is indicated by the LCD screen showing MIX in the upper right and left of the display. See Figure

3–4 below for an example.

Figure 3–4 LCD screen: Speaker Assign

2. Each subsequent press of a speaker assign button assigns the

selected channel to the left, both, right or neither speaker channel. All eight channels may be mixed/summed in this way. With each successive button press, the color of the associated speaker assign LED, and the mixing/routing of that channel, cycles through the following sequence

Table 3–1 Speaker Assign Selection

Button Press Results

1st Green (routed to left speaker only)

2nd

Alternating Green and Amber

(routed to both left and right speakers) 3rd Amber (routed to right speaker only) 4th Off (not mixed or routed into either speaker)

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Chapter 3 Audio Configuration

CH1 AES1 CH2

----

CH7 AES1 CH8

----

Monitoring and Mixing Modes

Single

This mode allows you to select one and only one signal for each speaker independently of the other speaker and is most useful when you are monitoring mono sources.

To select channels individually for each speaker:

1. Press the Fn + Single buttons to enable single channel selection.

Figure 3–5 Single Channel Selection

2. Press the Left Up or Left Down buttons to cycle through the

channel selections for the left speaker. Likewise, press the Right

or Right Down buttons to cycle through the channel

selections for the right speaker.

Pairs

This mode allows you to quickly assign one pair of channels to the speakers. The selections are limited to Channels 1-2, 3-4, 5-6, and 7-8. In all cases, the odd channel is sent to the left speaker, and the even channel to the right. This mode is most useful when you are monitoring stereo sources.

To select channel pairs for each speaker:

1. Press the Fn + Pair buttons to enable channel pair selection.

Figure 3–6 Channel Pair Selection

2. Use the

Left Up, Left Down, Right Up or Right Down buttons

to cycle through the channel pair selections.

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Downmix

Chapter 3 Audio Configuration

Monitoring and Mixing Modes

This mode is most useful when multiple signals need to be mixed together and monitored at the same time. DM1-3 are designed for 5.1 surround sound signals, and assume a channel arrangement of (Channels 1-6 respectively):

• Left Front, Right Front,

• Center, LFE (Subwoofer),

• Left Surround, Right Surround.

4+4 Mode, Mix A, and Mix B are provided for other types of multichannel monitoring needs.

1. Press the Fn + Downmix buttons to enable Downmix mode.

2. Press the Left or Right button to cycle through the seven

available Downmix types to monitor through the speakers:

Note:

None of the available DM downmix modes include

Channel 4 because it normally carries the LFE channel which is below 200 Hz.

• DM1: This downmix is most suitable for a loudspeaker or

headphone downmix of a multi-channel program. Left and left surround input channels mix into the left speaker, right and right surround input channels mix into the right speaker. Center input speaker assigns equally into both left and right speakers. Contribution of the surround channel mix is set by the Surround Gain entry in the

Setup Menu. DM1 is

equivalent to the Japanese ARIB Set 1 downmix formula. See

DM1 Mix Diagram on page 28.

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Chapter 3 Audio Configuration

Monitoring and Mixing Modes

Figure 3–7 DM1 Mix Diagram

• DM2: You can use this downmix to create a two speaker

assignments that can be decoded to multi-channel program by the use of an external surround decoder. Contribution of the surround speaker Assign is set by the surround level entry in the

Setup Menu. DM2 is equivalent to the Japanese

ARIB Set 2 downmix formula. See Figure 3–8 below.

Figure 3–8 DM2 Mix Diagram

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Chapter 3 Audio Configuration

Muting the Speakers

• DM3: This downmix is the same as DM1 except that the

surround level is fixed at –3 dB. DM3 is equivalent to the Japanese ARIB Set 3 downmix formula. See Figure 3–9 below.

Figure 3–9 DM3 Mix Diagram

• 4+4: In this downmix Channels 1 through 4 are summed to

the left speaker and Channels 5 through 8 are summed to the right speaker.

• MXA and MXB: Select one of these two downmixes to

custom mix by adding Channels 1 through 8 into the left or

the right speakers using the Speaker Assign buttons.

• MIX: This mode appears whenever the Speaker Assign

buttons are pressed. The selection made in this mode is lost whenever another mode is selected, or a preset is recalled. Presets saved in MXA or MXB mode are recalled in this mode.

Muting the Speakers

The AMPx-S8 Series monitor provides two methods for muting the internal speakers:

1. Plug in a pair of headphones, or

2. Press the

Mute button.

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Chapter 3 Audio Configuration

Phase Correlation

Pressing the Mute button allows you to step through three mute

states and an unmuted state. When the system is in one of the mute states, all other information normally shown in the LCD such

as the Input Status Display is disabled. In addition, all other

buttons are disabled until you unmute the system. See Table 3–2 below.

Table 3–2 Mute Mode Functionality

Button Press Muted State

1st Mutes both left and right speakers

2nd Mutes the left speaker

3rd Mutes the right speaker 4th Returns the system to normal operation

Muting functions affect the signals to the speakers, headphones and the rear panel

Selected/Downmix Analog Output connectors. Muting

does not affect the Metered Analog Ouputs except to defeat scaling. These outputs reamain active even when the mute state is enabled.

Phase Correlation

1. Pressing the  button displays the phase correlation indicator in

the LCD screen.

The average correlation (phase) for the signal going through the left speaker compared to the signal going through the right speaker is indicated by a stationary block appearing in one of three positions on the second line of the screen. A moving block indicates an instantaneous (short term sample) phase correlation. Each of the three positions has a different meaning.

• Center: Only one channel active, or zero (0) correlation between the

two channels

• Left (-): Selected channels are out-of-phase (-1 correlation

maximum)

• Right (+): Selected channels are in-phase (+1 correlation

maximum).

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Chapter 3 Audio Configuration

- Phase +

SDI Inputs

With typical stereo program material, the moving block display is normal.

If the signals to the speakers are completely independent, they will have a correlation result of 0, and the block will be stationary in the center of the screen. See Figure 3–10 below for an example.

Figure 3–10 Phase Correlation Display

A mono in-phase signal fed to both right and left speakers would put block being in the right-most position indicating the left and right speaker signals are phase-identical.

The block will be on the far left for signals that are completely out of phase.

2. Press any button to return to normal operation.

SDI Inputs

Selecting SDI Groups and Subgroups

When you select either of the SDI inputs for monitoring, the Group

button allows you to select which two, four-channel SDI audio groups to display in the level meters.

When you press the buttons quickly, the selection order follows that shown in Table 3–3 on page 32.

1. Press the

until the display flashes once.

Group button quickly to select the group and then wait

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Chapter 3 Audio Configuration

848131 3.03

Setup: SDI Delay

SDI Inputs

Table 3–3 SDI Group Select

Button

Press

Left Bar Graph Bank

(1 through 4)

1st Group 1 Group 2 2nd Group 3 Group 4 3rd Group 1 Group 2

4th Group 1 Group 3 5th Group 1 Group 4 6th Group 2 Group 3 7th Group 2 Group 4 8th Group 3 Group 4

2. Now press the Group button more slowly to toggle between

Group 1/2 and Group 3/4 selections.

After this, rapid presses will again initiate the cycling as shown in

Table 3–3. Since the first two selections are more common choices,

this features allows easy toggling between them.

Configuring for SDI Delay

Right Bar Graph Bank

(5 through 8)

Important:

This function only works for SDI signal types.

Modifying the SDI delay value allows you to precisely synchronize the audio signal to a video signal. (The delay affects only the audio, not the video.)

To change the SDI Delay setting:

1. Hold the

Fn button while pressing the Setup button.

2. Press the Down button until the LCD screens SDI Delay as

shown in Figure 3–11 below.

Figure 3–11 SDI Delay in the Setup Menu

3. Press the Enter button to select the option. The LCD display to an

image similar to that shown in Figure 3–12 below.

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Chapter 3 Audio Configuration

-Setup-

SDI Delay: 140 ms

Selecting the Input Signal

Figure 3–12 SDI Delay Setting

4. Press either the Up or Down buttons to select the delay in

milliseconds: Off or 0 to 170 (in 1 millisecond intervals).

5. Press the Enter button to make your selection and return to the

Setup Menu.

6. Press the

Escape button to return to normal operation.

Selecting the Input Signal

While the system is in normal operation, press the Input button to

cycle through each of the five selections. The selection is enabled when

it appears in the LCD screen. (Pressing the Enter button is not

necessary.)

• Analog

• AES

• AES1 (Unbalanced)

• AES2 (Balanced)

• SDI (not available in the DA model)

• Auto.SDI or Auto.SDI2 if no signal is present

• SD.SDI (signal is present and auto-detected)

• HD.SDI (signal is present and auto-detected)

• 3G.SDI (signal is present and auto-detected)

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Chapter 3 Audio Configuration

848131 3.03

Setup: Startup

Setting the Monitor’s Startup Configuration

You can configure the AMPx-S8 Series monitor to start up from a powered-off state, and automatically begin monitoring a particular input.

1. Press the

2. Press the

in Figure 3–13 below.

Figure 3–13 Startup Menu Option

3. Press the

4. Press the Up or Down buttons to scroll through the startup

options. Note that only those options that are available in your system will show up in the list.

• Last Used

• Analog

• AES 1

Fn + Setup buttons.

Down button until the LCD screens Startup as shown

Enter button to display the Startup list.

• AES 2

• SDI 1 (not available on DA models)

• SDI 2 (not available on DA models)

5. Press the

Setup Menu.

6. Press the Escape button to return to normal operation.

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Enter button to make your selection and return to the

Page 45

Chapter 3 Audio Configuration

848131 4.00

Setup: Aes Term

AES Termination

Unbal. 1: Ena

AES Termination

Unbal. 1: Disa

Terminating/Unterminating Inputs

Each of the AES and bitstream inputs on the AMPx-S8 may be terminated or unterminated independently of each other. A given input should be terminated when the AMPx-S8 is the last receiving device in the signal path or is the only receiving device in the signal path. If the signal loops through the AMPx-S8 to another receiving device, the input should be unterminated in the AMPx-S8 (and terminated at the last device in the signal path). Terminating the signals properly improves signal integrity, and ensures the signal will be received correctly by all the devices in the signal chain.

In the AMPx-S8 monitors, the terminations are set to "Enabled" by default for the balanced AES inputs and unbalanced AES inputs inputs.

To change the termination settings:

1. Hold the Fn button while pressing the Setup button.

2. Press the Down button once. The LCD should look similar to the

image in Figure 3–14 below.

Figure 3–14 AES Termination Settings

3. Press the

Figure 3–15 or in Figure 3–16.

Figure 3–15 Termination Setting Currently Enabled

Enter key. The LCD should now look like the image

Figure 3–16 Termination Setting Currently Disabled

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Chapter 3 Audio Configuration

AES Termination

Save and Exit

Terminating/Unterminating Inputs

4. Press the Up or the Down buttons until the desired input is shown

on the screen.

5. Press the Enter key to change the termination setting for that

input.

Important:

Repeat Steps 4 and 5 until all the inputs have been set according to your needs.

6. To exit the menu, press the

Up or Down arrow buttons until Save

and Exit appears in the LCD, as shown in Figure 3–17 below.

Figure 3–17 Saving and Exiting the Termination

Settings

7. To exit the Setup menu without saving your changes, press

Escape.

The termination selection order is:

• Unbalanced 1

821030: AMPx-S8 Series User Guide

• Unbalanced 2

• Unbalanced 3

• Unbalanced 4

• Balanced 1

• Balanced 2

• Balanced 3

• Balanced 4

• Save and Exit

Page 47

Introduction

Overview

This chapter describes how to create, recall, modify, and erase presets. It

also discusses using Preset mode for fast system configuration.

Topics

CHAPTER 4

Presets

Topics Page

Introduction 37 What are Presets? 38 Methods of Accessing the Presets 38

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Chapter 4 Presets

What are Presets?

The AMP1-E8 is an incredibly flexible tool for monitoring multiple audio streams. You can configure the entire system to function exactly the way you want it to for your specific application. You can store a complete system configuration into a preset. After saving one or more presets, you can quickly scroll through them with the press of a single button. The AMPx-S8 allows you to store up to 10 presets (numbered 0 through 9).

Methods of Accessing the Presets

Setup Menu

All presets can be stored, recalled, or erased through the Setup menu.

1. Press Fn+Setup to enter the Setup menu.

2. Use the Up and Down arrow buttons to select Save Preset,

3. Then press the Enter button.

Each of these menu items is described more fully in Chapter 5: Setup

Menu on page 43.

Preset Mode

This mode of operation is intended for situations where a number of pre-defined unit configurations is all you need. This allows even the most non-technical person to quickly scan through a list of sources to monitor, without having to understand the operation of the rest of the unit, or which source is plugged into which input of this unit.

Erase Preset, or Recall Preset.

In Preset mode, the Input button cycles through the defined presets.

With

Preset mode enabled, you can recall a preset by pressing only the

Input button to access each stored preset by name, rather than by

signal type.

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Chapter 4 Presets

Methods of Accessing the Presets

Note:

When this mode is enabled, you can no longer directly select the inputs by the input type (e.g., AES 1, SDI 2, analog, and so on). The inputs are accessed only indirectly through the presets in this mode. To access the inputs by input type, you

must first disable Preset mode.

Enabling/Disabling Preset Mode

To enable or disable Preset mode:

1. Press Fn+Setup.

2. Use the Up and Down arrow buttons until PSet Mode appears in

the LCD window and press Enter.

Note:

3. Press the Up and Down arrow buttons to toggle between Disa

(disabled) and Ena (enabled). Press Enter to accept the new setting, or press Escape to cancel the change. Either way, you will be returned to the Setup menu.

This selection will not appear if all the presets are empty. In this case, you will need to store at least one preset to enable this menu item.

4. Press Escape again to return to normal operation.

Recalling a Preset

If Preset mode is enabled, press Input to recall the first available

preset. Subsequent presses will cycle through all the available presets.

Speaker Assign/Preset Buttons (Presets 1 through 4 Only)

Presets 1 through 4 get special attention. You can recall, save, or

overwrite them simply by pressing Fn+Preset x (where x represents

the corresponding below the meters on the left side of the unit). In the following examples, we’ll be using Preset 1.

Speaker Assign button immediately above or

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Chapter 4 Presets

Methods of Accessing the Presets

Saving a Preset

1. Press Fn+Preset 1.

If Preset 1 is currently empty, the system will prompt you to save and name the current unit configuration to Preset 1.

2. Name the preset by using the Up and Down arrow buttons to

scroll through the available list of characters. Press Enter to accept

each character.

3. When you’re done entering all the characters, scroll until _DONE_

appears in the window, and press

Enter.

Note:

_DONE_ is located between the lowercase letters and before the numbers.

Recalling a Preset

If, after pressing Fn+Preset 1, the preset is not empty, the system will

prompt you to recall Preset 1, and Preset 1's name will appear in the

LCD. If you press Enter, the system will recall the preset.

Overwriting a Preset

If the preset is not empty (after pressing Fn+Preset 1) the system will

prompt you to recall Preset 1, and its name will appear in the LCD.

1. If you press Escape while the preset recall prompt is showing, the

system will ask you if you want to overwrite the preset. If you want to overwrite the preset with the unit's current settings, press

Enter.

2. Press

Enter to continue.

3. Save Old Name? will appear, with the selected preset number

and current name below it. If you wish to use the name displayed, press

Enter, and skip the rest of the following instructions. Your

current settings are now stored in the selected preset.

Otherwise, if you wish to enter a new name, continue on with Step 4 below.

4. Press Escape.

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Chapter 4 Presets

Methods of Accessing the Presets

5. Name the preset by using the Up and Down arrow buttons to

scroll through the available list of characters. Press Enter to

accept the character; repeat the process until all the characters have been entered.

6. When all the characters have been entered, scroll until _DONE_

appears in the window, and press Enter.

Note:

_DONE_ is located between the lowercase letters and

before the numbers.

If you do not want to overwrite the preset, press Escape again, and the

unit will be returned to normal operation without recalling Preset 1 or modifying it in any way.

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Page 52

Page 53

Introduction

Overview

This chapter explains the options in the Setup menu. Figure 5–1 on page

44 provides a structural overview.

Topics

CHAPTER 5

Setup Menu

Topics Page

Introduction 43 Accessing Setup Mode 44 Analog Output Preference Mode 46 Recalling a Preset 46 Saving a Preset 47 Preset Mode 51 Erasing a Preset 51 SDI Delay 52 Startup 53 Surround Gain 53 Bitstream Detection 54 Phase Bits 55

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Page 54

Chapter 5 Setup Menu

Fn + Setup

Normal Operation

Esc

Enter

Setup: AES Term

Unbal. 1: Ena/Disa

Balanced 1: Ena/Disa Balanced 2: Ena/Disa Balanced 3: Ena/Disa Balanced 4: Ena/Disa

Unbal. 3: Ena/Disa Unbal. 4: Ena/Disa

Unbal. 2: Ena/Disa

Bitstrm. 1: Ena/Disa Bitstrm. 2: Ena/Disa

Save and Exit

Enter/Esc

Setup: AOutputPref

Discrete

Downmix

Enter

/Esc

Enter/Esc

Setup: Startup ++

Last Used

SDI 1 SDI 2 BSt 1 BSt 2

AES 1 AES 2

Analog

SDI 1 + DBY SDI 2 + DBY

Enter

/Esc

Setup: Srnd Gain

Mute

-9 dB

-6 dB

-3 dB

Enter

/Esc

Setup: Erase PSet

0 through 9

Enter

/Esc

Setup: Pset Mode

Enable Disable

Enter

/Esc

Unused?

Choose Preset Num

Preset0: DOLBY1

AES2 ?@<A>BC Name: A_

OVERWRITE PRESET?

Preset1: DOLBY1

Save Old Name?

Preset1: DOLBY1

Enter

Esc

Enter

Esc

Setup Menu

AES Term

Startup

Srnd Gain Erase Preset Pset Mode +

Save Preset

AOutPref

RCallPSet +

Choose Preset Num

Preset0: AES MIX

Enter/Esc

ERASE PRESET? Preset0: AES MIX

Enter/Esc

Choose Preset Num

Preset1: On Site

0 through 9

Normal

Enter/Esc

Enter

Yes

Enter

/Esc

SDI Delay

Setup: SDI Delay

Off through 170 ms

Enter

/Esc

A Vld Det

Ena/Disa

Enter/Esc

Phase Bts

Ena/Disa

Enter

/Esc

Accessing Setup Mode

Figure 5–1 Setup Menu Tree

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Chapter 5 Setup Menu

Accessing Setup Mode

1. Enable Setup mode by pressing and holding the Fn button and

then pressing the Setup button. This mode is used to change unit

features.

2. You can step through the menu selections and parameters using

Up and Down buttons.

the

3. Press the

Enter button to save your selections. To cancel the

option and exit the menu, press the Escape button.

The current options in Setup Mode (as shown in Setup Menu Tree on

page 44) are:

• Preset Recall (RCallPSet)

• Preset Save (SavePSet)

• Preset Mode (PsetMode)

• Preset Erase (ErasePSet)

• SDI Delay (only available for the 3G model)

• Surround Gain (Srnd Gain)

• Startup

• Analog Output Preference (AOutPref)

After entering the Setup Menu, the display will indicate the software,

version number, and the menu selection: RCallPSet (if presets are saved).

Table 5–1 Up Button List

Pressing the Up

Button the...

Changes the Display to...

1st time SavePSet 2nd time PSetMode (if presets are saved) 3rd time ErasePset (if presets are saved) 4th time SDI Delay (3G model only) 5th time Srnd Gain 6th time Startup 7th time A-OutPref 8th time RCallPSet

To select the current option, press the Enter button.

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Chapter 5 Setup Menu

Analog Output Preference Mode

To exit Setup Mode, press the Esc button.

Note:

The RCallSet, PSetMode, and ErasePSet options will not be available if a preset has not been previously saved to the unit. See Saving a Preset on page 47 for how to save a preset of the current unit configuration.

Analog Output Preference Mode

To change the Analog Output Preference, select AOutputPref and then press the Enter button.

This entry within the Setup menu is used to determine how the

Selected/Downmix Analog Out and Metered Analog Out

connectors on the rear panel output the metered signal when any of the DM1, DM2, or DM3 downmix selections is enabled.

The default setting is Downmix, which outputs the speaker assign with individual channel scaling (gain settings) intact as determined by the selected downmix (DM1, DM2, or DM3). In addition, the channels are summed at unity gain into the speakers and headphones. However, if

Discrete is selected, then all channels within the downmix are output

from these connectors at unity gain without scaling of the channels as determined by the selected downmix. For example, the center channel

scaling is -3dB, and the surround channel scaling is set in the Setup

menu.

Recalling a Preset

1. Press the Fn + Setup button to display the Setup menu.

2. Press the Up button to display RCallPSet.

3. Press the

821030: AMPx-S8 Series User Guide

Enter button to select this option.

Page 57

Chapter 5 Setup Menu

Choose PresetNum

Preset1: Off Air

Choose PresetNum

Preset7: Unused

Saving a Preset

Figure 5–2 Recalling an Existing Preset

4. Press the Up and Down buttons to scroll through the presets.

In the example above (Figure 5–2), Preset 1 is called Off Air. If a particular preset is not assigned, it will be indicated as Unused, as shown in Figure 5–3 below.

Figure 5–3 Creating a New Preset

5. Press the Enter button with the desired preset displayed to recall

that preset. The unit returns to normal operation, reconfigured according to the settings in that preset.

Saving a Preset

1. Press the Fn+Setup buttons to display the Setup menu.

2. Press either the

3. Press the

Decision Point:

If you want to create a brand new preset, continue on to Creating a

New Preset on page 48.

Enter button.

Up or Down buttons to display Save Preset.

Otherwise, if you want to overwrite an existing preset, continue on to

Overwriting an Existing Preset on page 49.

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Chapter 5 Setup Menu

Choose PresetNum

Preset7: Unused

AES 1 ?@<A>BC

Name: A_

HD.SDI1 _DONE_

Name: HDSDI1

_

Saving a Preset

Creating a New Preset

Note:

To cancel the procedure at any time during this process,

press the Escape button and the preset will not be saved

and the unit will return to normal operation.

1. Press either the Up or Down buttons to choose any preset labelled

Unused.

Figure 5–4 Choose an Unused Preset

2. Press the Enter button to display a prompt for a new preset name

as shown in Figure 5–5.

Figure 5–5 Assigning the Name of a Preset

3. Scroll through letters (and symbols) using the Left Up and Left

Down

buttons. Press the Enter button to accept the current letter

shown in the display and move to the next letter. Repeat this procedure until the display shows the name you want to use for this preset.

Note:

Pressing the Enter button may display multiple letters,

but the only one that changes will be the one immediately to the left of the underscore. As a result, it may be necessary to start the procedure over again if too many characters appear in the display.

Figure 5–6 Completed Preset Name Selection

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Chapter 5 Setup Menu

OVERWRITE PRESET

Preset1: Off Air

Save Old Name?

Preset3: Studio

Saving a Preset

Naming will automatically end after you select eight characters, or

when you press the Enter button when _DONE_ appears on the

display. See Figure 5–6 above.

Note:

The _DONE_ selection comes before the numerals, and follows the lower case alphabet. The character order is the order of ASCII characters.

After naming the preset, the current state of the system is saved under that name and preset number, and the system returns to normal operation.

Important:

This concludes the procedure for creating a new preset.

Overwriting an Existing Preset

1. Press either the Up or Down buttons to choose any preset that is

not labelled Unused.

Choosing an already used preset will display a warning to the user that they are about to overwrite the preset, as shown in Figure 5–4 below.

Figure 5–7 Overwriting a Preset

2. Press the Enter button to display Save Old Name? (Figure 5–8

on page 49) with the selected preset number and current name

below it. If you wish to use the name displayed, press skip the rest of the following instructions. Your current settings are now stored in the selected preset.

Figure 5–8 Save Old Name?

Enter, and

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Chapter 5 Setup Menu

Studio ?@<A>BC

Name: A_

Saving a Preset

3. Pressing the Enter button keeps the old name for the new preset

and returns the unit to normal operation.

Important:

This concludes the procedure for overwriting an existing preset with the same name.

Pressing the

Escape button displays a prompt for a new preset

name as shown in Figure 5–9 below.

Figure 5–9 Save New Name?

4. Scroll through letters (and symbols) using the Left Up and Left

Down

buttons. Press the Enter button to accept the current letter

shown in the display and move to the next letter. Repeat this procedure until the display shows the name you want to use for this preset.

Note:

Pressing the Enter button may display multiple letters,

Naming will automatically end after you select eight characters, or

when you press the Enter button when _DONE_ appears on the

display.

Note:

The _DONE_ selection comes before the numerals, and follows the lower case alphabet. The character order is the order of ASCII characters.

After naming the preset, the current state of the system is saved under that name and preset number, and the system returns to normal operation.

Important:

This concludes the procedure for overwriting an existing preset with a new name.

Page 61

Preset Mode

Choose PresetNum

Preset1: Off Air

For more information about presets Refer to Chapter 5: Setup Menu on

page 43.

To enable or disable Preset mode:

1. Press Fn+Setup.

2. Use the Up and Down arrow buttons until PSet Mode appears in

the LCD window and press Enter.

Chapter 5 Setup Menu

Preset Mode

Note:

3. Press the Up and Down arrow buttons to toggle between Disa

(disabled) and Ena (enabled). Press Enter to accept the new setting, or press Escape to cancel the change. Either way, you will be returned to the Setup menu.

4. Press Escape again to return to normal operation.

This selection will not appear if all the presets are empty. In this case, you will need to store at least one preset to enable this menu item.

Erasing a Preset

This menu command allows you to erase a stored preset. Pressing the

Enter button will allow the user to choose a preset to erase.

Note:

If the unit does not have any stored presets, this menu item will not appear.

Figure 5–10 Erasing a Preset - Choose the Preset

The Left and Right buttons select from among the available presets.

Once you press the warn you that the preset will be erased.

Number

Enter button to select a preset, the system will

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Page 62

Figure 5–11 Erasing a Preset - Confirmation

Erase Preset?

Preset1: Off Air

Choose PresetNum

Preset2: VTR #2

-Setup-

SDI Delay: 140 ms

Pressing the Enter button will erase that preset. Pressing the Esc

button will not erase that preset. In either case, control returns to the menu to choose another preset to erase.

Figure 5–12 Erasing a Preset - Select the Preset to

Erase

Press the

Monitoring Mode

SDI Delay

Important:

This menu item is not available if this unit has no de-embedder card.

This feature allows you to change the amount of delay added to the deembedded audio signals from the SDI inputs. This allows you to compensate for video processing delays in external video signal chains and monitors. This selection delays the monitored SDI audio and the de-embedded SDI AES signals, but does not affect the reclocked SDI output in any way.

Figure 5–13 SDI Delay

Esc button to exit Setup Mode and return to Normal

Step through settings using the example). To accept, press the

exit Setup Mode and return to Normal Monitoring Mode.

Up or Down button, select 140 ms (for

Enter button. Press the Esc button to

Page 63

Startup

-Setup-

Srnd Gain -3dB

The Startup entry within the Setup Menu determines the input used

by the unit at power up. When set to Last Used, the unit will power up the same way that the unit was before power was interrupted. If instead you want to have the unit start up every time with the same input selected, repeatedly press the Up/Down buttons until the desired input is shown in the LCD. Save the selection by pressing the

Enter button. Press the Esc button to exit Setup mode and return to

normal operation.

Surround Gain

To change surround gain, select Srnd Gain and then press the Enter

button.

Chapter 5 Setup Menu

Startup

Important:

Figure 5–14 Erasing a Preset

Step through settings using the Up or Down buttons, select -9dB (for example). To accept, press the Enter button. To exit without saving,

press the

Surround gain adjustments are only effective for downmixes DM1 and DM2. In downmix DM3 the surround gain is fixed.

Esc button.

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Page 64

Bitstream Detection

The unit will now mute an input pair if it detects the presence of a nonPCM stream (such as a Dolby or DTS bitstream) on that pair. The unit detects bitstreams with two methods:

A. Preamble detection

B. Not-Audio AES Channel status flag is asserted

In terms of Method A, encoded bitstreams contain key data sequences that identify the type of encoding used. These sequences are known as preambles (see the SMPTE 337 and 338 standards). This unit can only detect 16-bit preambles. For example, a 20-bit Dolby E stream would be passed as PCM audio, instead of being flagged as an encoded stream. This method is always employed.

In terms of Method B, the upstream equipment must either assert or de-assert this flag. Unfortunately, not all equipment does this correctly. In those cases where the channel status flag is set incorrectly, you may need to disable this method of bitstream detection. This can be done

using the setup menu item A Vld Det. When enabled (Ena), Method B is used to detect bitstreams. When disabled (Disa), Method B is not

used to detect bitstreams. If your unit is muting PCM streams, set this

item to Disa. If encoded bitstreams are getting through to the speakers, set this item to Ena.

Page 65

Phase Bits

For units with SDI de-embedder cards installed, there is a new menu item available, entitled Phase Bts, which stands for phase bits. These are bits that are embedded in SDI streams that allow the audio sample rate to be independent of the video pixel clock, and they are required by the latest SMPTE standards. However, not all equipment implements these bits correctly. Normally, this menu item should be left in the Ena (enabled) setting, which means the phase bits are being used to properly time the audio samples that are being de-embedded.

If you experience interrupted or garbled audio from the SDI deembedder, try setting this to Ignor (ignore), which means the embedded phase words are ignored. If this fixes the garbled audio, please contact the manufacturer of the upstream equipment to determine if any firmware updates are available for it. In cases where phase bits are not embedded at all, or if this menu item is set to Ignor, the pixel clock will be used as the reference for the de-embedded audio sample rate.

Chapter 5 Setup Menu

Phase Bits

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Page 66

Chapter 5 Setup Menu

Phase Bits

821030: AMPx-S8 Series User Guide

Page 67

Introduction

Overview

This chapter details the features of each of the monitors in the series and provides the technical specifications. It also outlines the distinctions between models.

CHAPTER 6

Features and

Specifications

Topics

Topics Page

Introduction 57 Features 58 Specifications 59 Technical Functional Overview 60

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Chapter 6 Features and Specifications

Features

Common Features

The AMPx-S8 Series audio monitors provide a complete, exceptionally high-quality 3G/HD/SD-SDI, PCM and analog stereo audio monitoring solution. A significant feature is the ability to monitor up to eight channels of a 3G-SDI, HD-SDI and/or SD-SDI bitstream, two sets of four AES/EBU signal pairs (balanced and unbalanced) or eight analog channels. Eight high-resolution, 53-segment, tri-color, LED bar graph audio level meters provide accurate and instantaneous visual level monitoring at a glance.

• Space-saving 1 RU or 2 RU

• Four de-embedded AES balanced or unbalanced outputs

• (Eight channels) from two selected SDI groups

• Four AES/EBU balanced inputs and loop-throughs on a DB-25

connector

• Eight analog inputs on a balanced DB-25 connector

• Eight analog outputs on a balanced DB-25 connector

• Comprehensive multi-channel to stereo downmix capability

• Unit configuration stored while unit is switched off

• Storage for ten preset monitoring settings for easy recall

• Phase (polarity) correlation display of selected channels

• LCD status display on front panel

• Volume and balance controls

• Eight high-resolution tri-color LED bar graph level meters with

simultaneous PPM dot over VU bar

• Headphone output

Model Dinstinctions

Table 6–1 Model Functional Distinctions

Model AES Analog SD-SDI HD-SDI 3G

AMPx-S8DA  AMPx-S8MDA-

   

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Chapter 6 Features and Specifications

Specifications

Table 6–2 Specifications for the AMPx-S8 Series Monitors

Specification Value

Power Consumption 72 W max AC Mains Input 100 to 240 VAC, 50 to 60 Hz Analog Input Impedance 27K balanced, minimum AES Input Configuration 110 balanced, 75 unbalanced Analog Input Overload +24 dBu balanced Analog Reference +8, +6, +4, or 0 dBu Digital Reference -20, -18, or -9 dBFS Meter Dynamics (AES Scale) VU and PPM Level Meter Scale (standard) AES AES Input Sampling Rate

D to A Converter Peak Acoustic Output (at 2 ft.) 104 dB SPL

Acoustic Distortion

Response, 6th Octave

Distortion, Electrical <0.15% at any level below limit threshold Hum and Noise, Analog Better than 68 dB below full output Power Output

32 to 48 kHz, autoselected 24-bit low jitter

6% or less at worst case frequencies above 140 Hz including cabinet resonance; typically < 1.5%

80Hz to 18 KHz ±5 dB (-10 dB at 55 Hz, 21 kHz)

High Frequency

Low Frequency

6 W RMS (each channel)

14 W RMS

Converted Analog Out THD <0.008%

3.5” H x 19” W x 12.5” D (89 mm x 483 mm x 317.5 mm)

2RU Model Chassis Dimensions

(Depth, including controls and knobs, is 14” [355.6 mm])

1.75” x 19” x 11” (4.5 mm x 483 mm x 30 mm)

1RU Model Chassis Dimensions

(Depth, including controls and knobs, is 13.5” [342.9 mm])

1RU: 13 lbs. (5.9 kg)

Weight

2RU: 18 lbs. (8.2 kg)

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Chapter 6 Features and Specifications

Technical Functional Overview

Table 6–2 Specifications for the AMPx-S8 Series Monitors

Specification Value

• AES (D-Sub 25, 4 BNC)

Inputs

• 3G/HD/SD-SDI (2 BNC)

• Analog (D-Sub 25)

• Metered Analog (DB-25)

• 3G/HD/SD-SDI Re-Clocked (BNC)

• AES Unbalanced Out from SDI (HD-15)

Outputs

• (Optional) Balanced AES Out from SDI Input

(DB-25)

• Selected Downmix/Analog Out (Left and

Right, XLR-M)

• AES Bal In/Loop Out (DB-25)

a Other level meter scales are available at time of manufacture including BBC, DIN, and others.

Contact Wohler for more information concerning alternate scales.

Note:

All features and specifications are subject to improvement without notice.

HD and 3G SDI signals require embedded audio phase data according to SMPTE 299-2009.

Table 6–3 Size-Specific Specifications for the AMPx-E8 Series

Monitors

Specification AMP1s AMP2s

Rack Height 1RU 2RU Level Meter Segments 26 segments 53 segements

Technical Functional Overview

Figure 6–1 on page 61 through Figure 6–3 on page 63 illustrate the

overall functionality of each of the AMPx-X8 models.

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Page 71

821030: AMPx-S8 Series User Guide

Chapter 6 Feat ures and Specifications

Technical Functional Overview

Figure 6–1 AMP1-S8DA Block Diagram

Balanced

Analog Inputs

(DB-25)

Unbalanced

AES/EBU

Inputs (BNC)

1-2

3-4

1-2 3-4 5-6 7-8

5-6

7-8

uP Control / U.I.

LCD Display

Group & Channel Switching Status

RS-232 A

1 2

5 6

3 4

7 8

Analog Out From

Selected Source

(Chan. 1-8)

Analog Matrix & Channel Summing with Front Panel Control

Balanced

AES Inputs

and Loopthrough

Outputs

(DB-25)

Balanced Digital In 3-4

Balanced Digital In 1-2

Balanced Digital In 5-6

Balanced Digital In 7-8

Unbalanced Digital In 7-8

Unbalanced Digital In 5-6

Unbalanced Digital In 3-4

Unbalanced Digital In 1-2

SDI In 1-2

SDI In 3-4

SDI In 7-8

SDI In 5-6

53-Segment Hi-Res Level Meters

Selected/Downmix

Analog Out From Selected Source (Stereo)

Level Metering

1234

5678

Level Metering

Left Speaker

Stereo Analog

Amplier

Volume

Balance

Woofer Speaker

Right Speaker

Headphone

Woofer Speaker

Analog to

Digital

Analog to

Digital

Digital Input Select

1-2

3-4

5-6

7-8

1 2 3

D/A Select

Analog to

Digital

Digital to

Analog

Digital to

Analog

Digital to

Analog

Digital to

Analog

Digital Input Select

1 2 3

D/A Select

Analog to

Digital

Digital Input Select

1 2 3

D/A Select

Digital Input Select

1 2 3

D/A Select

Page 72

Chapter 6 Features and Specifications

Technical Functional Overview

Figure 6–2 AMP2-S8DA Block Diagram

Balanced

Analog Inputs

(DB-25)

Unbalanced

AES/EBU

Inputs (BNC)

1-2

3-4

1-2 3-4 5-6 7-8

5-6

7-8

uP Control / U.I.

LCD Display

Group & Channel Switching Status

RS-232 A

1 2

5 6

3 4

7 8

Analog Out From

Selected Source

(Chan. 1-8)

Analog Matrix & Channel Summing with Front Panel Control

Balanced

AES Inputs

and Loopthrough

Outputs

(DB-25)

Balanced Digital In 3-4

Balanced Digital In 1-2

Balanced Digital In 5-6

Balanced Digital In 7-8

Unbalanced Digital In 7-8

Unbalanced Digital In 5-6

Unbalanced Digital In 3-4

Unbalanced Digital In 1-2

SDI In 1-2

SDI In 3-4

SDI In 7-8

SDI In 5-6

Left Speaker

Right Speaker

Woofer Speaker

Stereo Analog

Amplier

Volume

53-Segment Hi-Res Level Meters

Balance

Headphone

Selected/Downmix

Analog Out From Selected Source (Stereo)

Level Metering

1234

5678

Level Metering

Analog to

Digital

Analog to

Digital

Digital Input Select

1-2

3-4

5-6

7-8

1 2 3

D/A Select

Analog to

Digital

Digital to

Analog

Digital to

Analog

Digital to

Analog

Digital to

Analog

Digital Input Select

1 2 3

D/A Select

Analog to

Digital

Digital Input Select

1 2 3

D/A Select

Digital Input Select

1 2 3

D/A Select

Page 73

821030: AMPx-S8 Series User Guide

Chapter 6 Feat ures and Specifications

Technical Functional Overview

Figure 6–3 AMP1-S8MDA-3G Block Diagram

Balanced

Analog Inputs

(DB-25)

Unbalanced

AES/EBU

Inputs (BNC)

1-2

3-4

1-2 3-4 5-6 7-8

5-6

7-8

uP Control / U.I.

LCD Display

Group & Channel Switching Status

RS-232 A

1 2

5 6

3 4

7 8

Analog Out From

Selected Source

(Channels 1 to 8)

Analog Matrix & Channel Summing with Front Panel Control

Balanced

AES Inputs

and Loopthrough

Outputs (DB-25)

Balanced Digital In 3-4

Balanced Digital In 1-2

Balanced Digital In 5-6

Balanced Digital In 7-8

Unbalanced Digital In 7-8

Unbalanced Digital In 5-6

Unbalanced Digital In 3-4

Unbalanced Digital In 1-2

SDI In 1-2

SDI In 3-4

SDI In 7-8

SDI In 5-6

Unbalanced AES Output

from SDI

SDI to AES

Output

(Reclocked)

Input #1

3G/HD/SD-SDI Section

Input #2

Selected/Downmix

Analog Out from

Selected Source

(Stereo)

Level Metering

1234

5678

3G/HD/SD

Interface

RS-232 C

Left Speaker

Stereo Analog

Amplifier

Volume

Balance

Woofer Speaker

Right Speaker

Headphone

Woofer Speaker

Analog to

Digital

Analog to

Digital

Digital Input Select

1-2

3-4

5-6

7-8

1 2 3

D/A Select

Analog to

Digital

Digital to

Analog

Digital to

Analog

Digital to

Analog

Digital to

Analog

Digital Input Select

1 2 3

D/A Select

Analog to

Digital

Digital Input Select

1 2 3

D/A Select

Digital Input Select

1 2 3

D/A Select

Page 74

Chapter 6 Features and Specifications

Technical Functional Overview

Figure 6–4 AMP2-S8MDA-3G Block Diagram

Balanced

Analog Inputs

(DB-25)

Unbalanced

AES/EBU

Inputs (BNC)

1-2

3-4

1-2 3-4 5-6 7-8

5-6

7-8

uP Control / U.I.

LCD Display

Group & Channel Switching Status

RS-232 A

1 2

5 6

3 4

7 8

Analog Out From Selected Source

(Channels 1 to 8)

Analog Matrix & Channel Summing with Front Panel Control

Balanced

AES Inputs

and Loopthrough

Outputs (DB-25)

Balanced Digital In 3-4

Balanced Digital In 1-2

Balanced Digital In 5-6

Balanced Digital In 7-8

Unbalanced Digital In 7-8

Unbalanced Digital In 5-6

Unbalanced Digital In 3-4

Unbalanced Digital In 1-2

SDI In 1-2

SDI In 3-4

SDI In 7-8

SDI In 5-6

Unbalanced AES Output

from SDI

SDI to AES

Output

(Reclocked)

Input #1

3G/HD/SD-SDI Section

Input #2

Left Speaker

Right Speaker

Woofer Speaker

Stereo Analog

Amplifier

Volume

53-Segment Hi-Res Level Meters

Balance

Headphone

Selected/Downmix

Analog Out from

Selected Source

(Stereo)

Level Metering

1234

5678

3G/HD/SD

Interface

RS-232 C

Analog to

Digital

Analog to

Digital

Digital Input Select

1-2

3-4

5-6

7-8

1 2 3

D/A Select

Analog to

Digital

Digital to

Analog

Digital to

Analog

Digital to

Analog

Digital to

Analog

Digital Input Select

1 2 3

D/A Select

Analog to

Digital

Digital Input Select

1 2 3

D/A Select

Digital Input Select

1 2 3

D/A Select