Audio enhancement K-SRC14 Manuale utente

XD RECEIVER

MANUAL

2 3

FCC CAUTION

Changes or modiﬁcations not expressly approved by the party responsible for compliance could void the user’s authority to

operate the equipment.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not

cause harmful interference, and (2) this device must accept any interference received, including interference that may cause

undesired operation.

NOTE

FCC ID can be found on the bottom of the units.

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, but if not installed and

used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this

equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the

interference at their own expense.

COMPLIANCE WITH FCC REQUIREMENT 15.407(C)

Data transmission is always initiated by software, which is passed down through the MAC, through the digital and analog

baseband, and ﬁnally to the RF chip. Several special packets are initiated by the MAC. These are the only ways the digital

baseband portion will turn on the RF transmitter, which it then turns o at the end of the packet. Therefore, the transmitter will

be on only while one of the aforementioned packets is being transmitted. In other words, this device automatically discontinues

transmission in case of either absence of information to transmit or operational failure.

RADIO FREQUENCY (RF) EXPOSURE WARNING

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment and meets the FCC radio

frequency (RF) Exposure Guidelines. This equipment should be installed and operated keeping the radiator at least 20cm or

more away from person’s body (excluding extremities: hands, wrists, feet and ankles).

MEDICAL NOTICE

Consult the manufacturer of any personal medical devices, such as pacemakers, to determine if they are adequately shielded

from external RF (radio frequency) energy. The unit operates in the frequency range of 1.92 GHz to 1.93 GHz.

Do not use the unit in health care facilities if any regulations posted in the area instruct you not to do so. Hospitals or health care

facilities may be using equipment that could be sensitive to external RF (radio frequency) energy.

SAFETY PRECAUTIONS

WARNING:

• The main plug or an appliance coupler shall remain readily operable.

• To prevent injury, this apparatus must be securely attached to the ﬂoor/wall in accordance with the installation instructions.

• The connections should comply with local electrical code.

• The installation shall be carried out in accordance with all applicable installation rules.

• To reduce the risk of ﬁre or electric shock, do not expose this apparatus to rain or moisture.

• The apparatus should not be exposed to dripping or splashing and that no objects ﬁlled with liquids, such as vases.

• All work related to the installation of this product should be made by qualiﬁed service personnel or system installers.

• This product has no power switch. To disable the power, disconnect the LAN cable.

CAUTION:

Before attempting to connect or operate this product, please read the label on the bottom.

The model number and serial number of this product may be found on the surface of the unit. You should note the model

number and serial number of this unit in the space provided and retain this book as a permanent record of your purchase to aid

identiﬁcation in the event of theft.

Model No.

Serial No.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK).

NO USER SERVICABLE PARTS INSIDE

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION

The lightning ﬂash with arrowhead symbol,

within an equilateral triangle, is intended to

alert the user to the presence of uninsulated

“dangerous voltage” within the product’s

enclosure that may be of sucient magnitude to

constitute a risk of electric shock to persons.

The exclamation point within an equilateral

triangle is intended to alert the user to

the presence of important operating and

maintenance (servicing) instructions in the

literature accompanying the appliance.

4 5

Warnings........................................................................................................................................................................... 2

Overview .......................................................................................................................................................................... 5

Safety Instructions.......................................................................................................................................................... 5

Speciﬁcations ................................................................................................................................................................. 7

Features............................................................................................................................................................................9

Operation ...................................................................................................................................................................... 

Linking a Microphone to a Receiver....................................................................................................................... 2

Classroom Audio ..........................................................................................................................................................4

SAFE Alerts ................................................................................................................................................................... 5

Functions....................................................................................................................................................................... 6

LED Lighting Indication.............................................................................................................................................. 9

DIP Switch Setting....................................................................................................................................................... 2

Connections...................................................................................................................................................................23

Precautions for Installation ........................................................................................................................................27

Wall Installation Guide.................................................................................................................................................29

Ceiling Tile Installation Guide ...................................................................................................................................30

Cable Routing and Mounting ....................................................................................................................................3

Serial Communication Command ...........................................................................................................................32

Troubleshooting ...........................................................................................................................................................38

The XD Receiver is designed as a physical interface for triggering the Lockdown Notiﬁcation from

EPIC (Education Paging & Intercom Communications) System® remotely. This allows the button to

be installed in areas where installing an EPIC Kiosk is not feasible or where a physical push button

interface is desired. The button has a protective cover to eliminate accidental activation as well is

lighted to enable location in the dark.

TABLE OF CONTENTS OVERVIEW

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus

(including ampliﬁers) that produce heat.

9. Protect the power cord from being walked on or pinched, particularly at plugs, convenience

receptacles, and the point where they exit from the apparatus.

10. Only use attachments/accessories speciﬁed by the manufacturer.

SAFETY INSTRUCTIONS

6 7

11. Use only with the cart, stand, tripod, bracket, or table speciﬁed by the manufacturer, or sold with

the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to

avoid injury from tip-over.

12. Unplug this apparatus during lightning storms or when unused for long periods of time.

13. Refer all servicing to qualiﬁed service personnel. Servicing is required when the apparatus has

been damaged in any way, such as if a power-supply cord or plug is damaged, liquid has been

spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or

moisture, does not operate normally, or has been dropped.

14. Make sure that the wall that the shelf will be attached to is strong enough to support the shelf. If

not, it is necessary for the wall to be reinforced.

15. For safety reasons, do not physically modify the product or any optional equipment.

16. To prevent possible ﬁre or electric shock, do not expose this product to rain or moisture.

17. Follow all warnings and instructions marked on this product.

18. To reduce the risk of electric shock, do not disassemble this product. Only qualiﬁed personnel

should service this product. Opening or removing covers may expose you to dangerous voltages

or other risks. Incorrect reassembly can cause electric shock.

19. The product should never be placed near or over a radiator or other heat source.

20. Do not use a microwave oven to dry this product.

21. The product may only be installed and serviced by qualiﬁed service personnel.

SPECIFICATIONS

Control Terminals

Mixed Line Output Audio/Power ConnectionLine Input

Link Button DIP SwitchesLink Status

MIC1

Audio Link

MIC2

Audio Link

Power

Status

8 9

XD RECEIVER WITH 3’ CAT6

Receiver Speciﬁcations DECT Technology 1.9 GHz

Line In Line level 3.5 mm stereo mini jack (monaural mix)

Line out Line level 3.5 mm output mini jack, RJ45 line level output, line level 3.5 mm stereo output

Power Requirement 24V DC @ 130 mA

S/N 85 dB or more (Receiver to Mix/MIC output), by auto level control function in Microphone

MIC1/MIC2 (Microphone Output) –5 dBV Balanced, Adaptive impedance 10 k or more, φ3.5 mm (1/8 inches) stereo mini jack

Control Port Line In, REC/E1 Alert/E2, RS-232C, RJ-45, audio/power, MIC1/MIC2 (Microphone Output)

• (1) RS-232 communication ports to control another classroom device such as a projector

Material ABS resin

Color White

Temperature Range 32 - 104° F (0 - 40° C)

Weight 1.72 lbs (27.52 oz)

Dimensions 6.19 (H) x 7.19 (W) x 1.38 (D) in (157 x 183 x 35 mm)

LINK BUTTON

Pressing the Link button will put the receiver into register mode to link with a microphone. This register

mode is canceled after 20 seconds. Refer to operating procedures. At the time of E2 state, the button

operation is invalid.

POWER STATUS

The power LED lights up as follows to indicate various states:

• Green: When the power is on, and this unit can receive signals under normal conditions.

• Red: E2 signal output provided.

• Yellow: Page mute signal received.

MIC1/MIC2 AUDIO LINK

The MIC1/MIC2 Audio LED lights up as follows to indicate various states:

• Green: Receiving signals from each microphone under normal conditions.

• Red: E1 signal output provided.

• Red: E2 signal output provided.

• Yellow: Page mute signal received.

LINK STATUS

The Link LED lights up as follows to indicate various states:

• Green: During audio link with the WAP or when a media microphone is linked with the third channel.

• Blinks yellow: (500 ms) during linking registration.

• Red: When the link connection to the WAP is broken. (DIP switch 2-8 = ON) or system error.

FEATURES

10 11

CONTROL TERMINALS

8-pin and 7-pin Euro blocks are used.

The following terminals are equipped.

• E1 CNT: Provides E1 signal* output controlled by K-STD14 (Teacher Microphone).

• E2 CNT: Provides E2 signal* output controlled by K-STD14.

*Those are available when K-STD14 is used. Settings of E1 and E2 are performed with K-STD14.

• E2 ACK: Connects acknowledge signals responding to E2 output.

• PAGE MUTE: Provides “make signal” inputs externally when the paging function is used.

• RS-232C: Used to control this unit via communication from an external device.

• Link button: Provides “make signal” inputs externally when the external link button is used.

• Alert Notiﬁcation Button: Provides “make signal” inputs externally when the external Alert

Notiﬁcation Button is used.

POWER/AUDIO CONNECTION

This connector is used to connect a standard CAT5, CAT5e, or CAT6 cable to the ampliﬁer.

MIXED LINE OUTPUT

The Line In connector provides audio output for other media players. Setting the No. 4 of the DIP switch

1 to On allows the audio outputs of the microphone MIC1 and MIC2 received by this unit to be provided

after mixing with Line In. This is an unbalanced output that utilizes a stereo mini plug (φ3.5 mm).

LINE INPUT

This connector is used to provide an audio input from external sources. This is a stereo, line level input,

and is internally mixed to a monaural signal that utilizes a stereo mini plug (φ3.5 mm).

DIP SWITCHES

Two DIP switches are used. The settings of this switch are updated when the receiver powers on.

Settings changed while powered on are not updated until the receiver is restarted.

(Excluding No.7 of DIP Switch 1)

1. Connect a standard CAT5, CAT5e, or CAT6 cable to the ampliﬁer. Then turn on the ampliﬁer and

the Power LED of the receiver lights green.

2. Power on the microphone. On the XD Teacher Microphone, press and hold the PWR/MUTE

button for one second. On the XD Student Microphone, push the TALK button or ﬂip up the TALK

switch. The MIC1 or MIC2 LED lights green, depending on a channel to be received.

3. Adjust the volume of external devices such as an ampliﬁer. The overall volume is adjusted with an

external ampliﬁer or volume knob. Use volume buttons on the Teacher Microphone to adjust the

volume. Adjust the volume of the other microphone or Line In by pressing the Select button.

4. The LED of the Power/MIC1/MIC2 indicates the operating state of the Receiver.

OPERATION

*Only applicable when XD Teacher Microphone is used

STATUS COLOR

During audio link with the WAP Lights Green

During linking registration Blinks Yellow at 500ms intervals

System Error Lights Red

LED POWER INDICATOR LED MIC1/MIC2 INDICATOR

E2 signal output provided* Lights Red Lights Red (lights green at E2 ACK

input provided)

E1 signal output provided* Lights Green Lights Red (for 300 ms)

Page mute signal input provided Lights Yellow Lights Yellow

Microphone volume operated* Lights Green No Light (for 300 ms)

Feedback blocker operated Lights Green Lights Yellow (for 5 sec)

During audio link Light Green Lights Green

5. The LED of the Link indicates the operating state of this unit.

12 13

LINKING A MICROPHONE

TO A RECIEVER

LINKING TEACHER MICROPHONE

2. With the microphone o, press

and hold REC button. Then

promptly press and hold PWR until

microphone is linked.

3. Successful microphone linking will produce a beep through the system, and on the front of the

receiver you will see an additional green LED.

LINKING STUDENT MICROPHONE

1. Press and hold the PWR LINK

button on the back of the XD Student

Microphone.

2. While holding use your thumb to slide

the TALK button up into to

the on position. Successful linking will

produce an audible beep as well as an

additional green LED.

LINKING MEDIA CHANNEL

1. The microphone cannot be linked to the Media channel unless MIC1 and MIC2 channels

are on.

2. Make sure the microphone needing to be linked, either the Teacher or Student, is turned o.

3. Conﬁrm that both Channel 1 and Channel 2 mics are on and connected to the ampliﬁer.

4. Follow XD Teacher or XD Student Microphone Linking section instructions.

5. In around 10 seconds you should hear a beep and the ampliﬁer Link LED will be solid yellow.

1. With the microphone o, press the Link

button on the front of the XD Receiver

(Look for the blinking yellow LED).

14 15

CLASSROOM AUDIO SAFE ALERTS

PAIRED VS NOT PAIRED

TEACHER MICROPHONE

Pressing the PWR/MUTE button for 3+ seconds will power up the microphone. The microphone can be

used in a classroom. (When linked, MIC1 or MIC2 LED indicator lights green on the receiver)

PAIRED MODE

MICROPHONE CONNECTED TO A RECEIVER

When a Teacher Microphone is linked to the receiver and the E2 buttons are pressed simultaneously

for 3 seconds or more the Teacher Microphone immediately sends an alert message to the receiver.

(MIC1/Power/MIC2 indicator: lights red.) The microphone continues to transmit audio before, during,

and after the alert message is sent. (If the microphone is moved to the Audio Mute Area* or the wireless

connection breaks location, the status changes from a linked alert to a non-pair alert.) Audio mute area:

Refer to Command List [SAA].

Even when the Teacher Microphone is o, an alert can be sent by pressing the E2 buttons on the

microphone. If the microphone is able to connect to its linked receiver, it will be in a linked alert state. (If

the microphone can not connect to its linked receiver, it will be in a non-pair state.)

NON-PAIRED MODE

MICROPHONE ISN’T CONNECTED TO A RECEIVER

If the Microphone is not linked to the receiver and the E2 buttons are pressed for 2 seconds or more:

1. The microphone uses the ALL command to search for nearby receivers.

2. The ﬁve closest receivers will return a signal to the microphone, helping software plot the E2

alert’s location on.

3. The Microphone will repeat #2 every 30 seconds until the microphone is turned o.

(MIC1/Power/MIC2 indicator: there is no change.)

*The microphone in non-linked mode never transmits audio.

*Alerts from the Alert Notiﬁcation button will only be sent alert information.

REMINDER

Also read the operating instructions of the Teacher Microphone.

Also read the operating instructions of the Student Microphone.

STUDENT MICROPHONE

Pressing the TALK button or pushing up the TALK switch will turn on the microphone. The microphone

can be used in a classroom. (MIC2 or MIC1 LED indicator lights green on the receiver)

16 17

MICROPHONE OVERRIDE FUNCTION

This is a function where the audio level of Line In automatically lowers when the audio input of the

microphone MIC1 or microphone MIC2 is provided. The attenuation of the audio level is –12 dB.

When the audio input of the MIC1 or MIC2 is no longer provided, the volume of Line In automatically

returns to the previous level.

FUNCTIONS

PAGING MUTE FUNCTION

This is a function where the audio outputs of the MIC1, MIC2, and Mixing Output of this unit are muted by

closing the Page Mute terminal.

This function is speciﬁed with the Control Terminal or RS-232C. This function is set to o at default settings.

TONE FUNCTION

This is a function where the operation sound output is provided from the Mix Out connector when the

volume button is operated with the optional microphone, K-STD14. The operation sound is generated

twice at the maximum and minimum volumes.

The level of the operation sound can be set to High or Low with the DIP switch. The level is set to Low at

default settings.

This function is speciﬁed with the DIP switch. This function is set to o at default settings.

MICROPHONE/LINE MIXING FUNCTION

This function is designed to assign the microphones, MIC1 and MIC2, to the mixing out, and two signals

will be mixed with the mixing out.

REMOTE VOLUME FUNCTION

This is a function where the volume of this unit cannot be adjusted with the volume button of the optional

microphone, K-STD14.

This function is used when external devices are controlled with the volume button through the use of the

communication control function of this unit.

This function is speciﬁed with the DIP switch. The volume can be controlled with the microphone at

default settings.

MIXING OUTPUT ATTENUATOR FUNCTION

Setting the mixing output attenuator to ON provides attenuation in the mixing output by 10dB. This

function is useful when a device with high input sensitivity is connected. This function is speciﬁed with

the DIP switch. The output is set to –10dB at default settings.

ABOUT THE FEEDBACK BLOCKER

This is a function where the feedback loop generated when the microphone and speaker approach

each other is reduced. An integrated ﬁlter is automatically selected according to the generated audio

frequency and reduces the uncomfortable feedback loop. This function is speciﬁed with the DIP switch.

This function is set to o at default settings.

REMINDER

This function is simpliﬁed and cannot fully remove the feedback loop. When the feedback loop is

extremely large, this function will work to mute all the audio outputs of this unit.

18 19

E1 CNT, E2 CNT FUNCTION

These functions are available when the K-STD14 microphone is used. When E1 or E2 is controlled with

the microphone, control signals are provided from the E1 CNT or E2 CNT terminal of this unit. Selection

between E1 and E2 is made at the microphone side.

E1: DEFAULT SETTING IS OPEN

Press the button REC on the Teacher microphone to select the closed state of 300 ms.

E2: DEFAULT SETTING IS OPEN

Press both side E2 buttons simultaneously on the Teacher Microphone for 2 seconds or more or press

the Alert button to select the close state.

LED LIGHTING INDICATION 1: POWER/MIC1/MIC2

The three LEDs of this unit act as a status indicator, indicating signal reception. Those LEDs indicate the

operating states as shown in the table. Furthermore, the priority order of the indications is dependent on

operating states.

LED LIGHTING INDICATION

E2 ACK FUNCTION

When make signal inputs are provided to E2 ACK of the control terminals during E2 operation, the LED

indicator of this unit turn from red to green to indicate that the E2 ACK signal is received.

When the E2 control input has not been provided from the microphone for 3 minutes after turning o

the power of the microphone, the E2 state ends, the MIC1 or MIC2 LED indicator indicates the receiving

state, and the operation LED turns from red to green to indicate the operating state.

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