Broadcast Devices SCA-200 Produkthandbuch

Broadcast Devices, Inc.

SCA-200 Dual 67 KHz SCA Generator

Technical Reference Manual

Broadcast Devices, Inc.

Tel. (914) 737-5032

Fax. (914) 736-6916

World Wide Web: www.Broadcast-Devices.com

Rev A. 11/19

Table of Contents

Introduction 3

I. Unpacking 3

II. Installation and Connections 3-4

III. Features and Operation 4

IV. Initial Operating Setup 4-5

SCA-200 Optional Programming Functions 5-6

Remote Control Connections 6

Analog Audio Input Connector Wiring 7

Serial RS232 Connector Wiring 7

V. Specifications 8

VI. Warranty 9

Introduction and Description

The SCA-200 Dual 67 KHz SCA Generator is a next generation approach to SCA generators

utilizing digital signal processing. The SCA-200 comprises of two totally independent 67 KHz SCA

generators in one chassis. Each generator has two XLR balanced inputs which are selectable via

the SCA-200 Windows application software. The unit features two independent outputs for each

generator. All setup adjustments are made via the APP as there are no physical controls or

switches on the front panel of the unit. Adjustment for input level, optional audio low pass filter,

pre emphasis and output level are all accomplished via the SCA-200 APP.

I. Unpacking

Carefully inspect the unit after unpacking and make certain that no damage has occurred during

shipping. If damage is noted, contact the shipper immediately and file a claim for damages. Each

unit is carefully packed and carries full insurance against damage. Inspect the packing list and

make sure that the contents of the package match those described on the packing list.

II. Installation and Connections

Select a space in suitable E.I.A. standard rack to locate the unit. Determine the local electrical

power supply voltage. As supplied from the factory, your SCA-200 is setup for 100 – 240 V.A.C.

50 - 60 Hz. No external adjustment for local power standards is necessary if power available

conforms to the above rating. The SCA-200 utilizes a switch mode power supply and

automatically adjusts for local power entry. Make connections to the unit following good

engineering practice. Supply power to the unit utilizing a three conductor grounded outlet. Do no

lift the electrical ground to the unit at the power receptacle as this will result in a safety hazard. In

the event of ground loops, lift the ground at the offending connection only. Make certain that the

unit is afforded proper ventilation in the area of the top cover vent.

III. Features and Operation

The SCA-200 can accept up to two balanced nominal 0 dBm signals to each generator. There is

provision to adjust audio level for each input by +/- 10 dB affording a wide range of input levels.

There is a third position of the switcher which provide a 400 Hertz tone for test purposes.

IV. Initial Operating Set up

After mounting the unit in the rack and applying power connect a CAT5 cable from a laptop

computer to the unit. The initial IP settings are as follows:

IP address: 192.168.1.200

Subnet mask: 255.255.255.0

Default Gateway: 192.168.1.1

Username: username Password: password

Once you enter the default IP address this screen should appear:

Press Setup and the IP setup page will appear:

Make changes and hit save but make sure you record the settings before exiting this screen. It is

a good idea to take as screen shot or record the username, password and IP address information

here:

Username: __________________________________________________

Password: ___________________________________________________

IP address: __________________________________________________

SNMP Port:__________________________________________________

In order for the setting to take effect the unit must be power cycled for at least 5 seconds.

Once the unit is confirmed on the desired IP address load the SCA APP supplied on the

accompanying CD ROM onto a computer. Once installed you can start the app by clicking on the

EXE file. Send it your desktop for convenience.

Once the APP starts you will see the following screen:

It is possible to have up to 5 SCA generators collocated or at other sites under management from

the same APP. You can give each unit a name by entering it in the space allowed.

Click OPEN on the desired generator presumably Unit 1 if you are only setting up one generator

chassis. The screen below will appear:

You will need to click on the Connect tab in order to set the IP address set up previously on the

browser interface screen.

Enter the IP address and port assignment if other than what is shown. Make certain that the port

is forwarded on the router that the unit is connected to or you will not be able to access the unit

from an outside connection. Make the changes and click on CONNECT.

You can go back to the Control screen and finish the setup. It is advisable to monitor the output of

the generator with a means of looking at the base band spectrum or a suitable SCA monitor while

performing these adjustments.

1. Select input

2. Set input gain. The unit is setup for 0 dBm with the adjustment at “0” default. A coarse

gain change in one dB increments and a fine adjust of 0.1 dB increments can be made by

using the UP/DOWN arrows. It is advisable to feed an audio signal in that is processed

with at least some form of peak limiter to limit modulation of the generator. The SCA-200

does no dynamic processing of the audio feeding it. This must be done ahead of the unit.

3. Set pre emphasis as desired. Off, 50, 75, 150 or 225uS

4. An optional audio low pass filter setting can be made to Off, 5 or 10 KHz

5. Mode select to On, Off or Auto. Auto places the unit in a mode whereby a lack of audio

signal at nominal level will mute the generator output after 10 seconds.

6. Set output gain which is the injection level for the exciter that the unit will feed. Again a

+/- 10 dB in 1 dB increments and fine adjust in 0.1 dB increments can be performed.

Remote Control – Parallel/GPIO DB25F Connection Table 2.

Command input pins require a momentary closure to common. Status connections open collector

outputs which require a 5 VDC pull up which is provided on pin 12.

SCA GEN 1 INPUT A SEL COMMAND

+5 VDC

CMD/STAT COM

SCA GEN 2 INPUT A SEL COMMAND

SCA GEN 2 OFF STATUS

CMD/STAT COM

SCA GEN 1 OFF STATUS

SCA GEN 2 ON STATUS

SCA GEN 1 B INPUT SELECTED STATUS

SCA GEN 1 ON COMMAND

CMD/STAT COM

SCA GEN 1 A INPUT SELECTED STATUS

SCA GEN 1 INPUT B SEL COMMAND

SCA GEN 2 B INPUT SELECTED STATUS

SCA GEN 1 ON STATUS

CMD/STAT COM

SCA GEN 2 A INPUT SELECTED STATUS

CMD/STAT COM

OPT SHIELD

SCA GEN 2 OFF COMMAND

SCA GEN 2 B INPUT SEL COMMAND

SCA GEN 1 OFF COMMAND

SCA GEN 2 ON COMMAND

CUST SUPPLIED

DB-25M

V. Specifications

Input: 2 – XLR balanced 600 Ohm – for each generator

Output: 2 – BNC 50 Ohm adjustable – for each generator

Sub Carrier Frequency: 67 KHz +/- 0.5% over environmental temperature range

Frequency Response: +/- 0.25 dB from 50 Hz to 10 KHz – 5 KHz low pass filter

switchable

Pre Emphasis: 50, 75, 150 or 225 uS switchable – each generator

Total Harmonic Distortion: Less than 0.5% over audio passband

Remote Control: Parallel GPIO, Ethernet SNMPv2, RS232/485 BDI Stack

Graphical User Interface supplied for setup and

operation

Power Requirements: 100-240VAC 50-60 Hertz @ 0.5 Ampere

Environmental: 0-50 degrees C. non condensing atmosphere

Mechanical: 19”W X 10”D X 1.75”H standard EIA rack enclosure

Shipping Weight/Dimensions 15 lbs, 22”W X 14”D X 7”H

FCC Certification Statement:

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.

VI. Warranty

Broadcast Devices, Inc. products are warranted against failure due to faultymaterials or workmanship

for a period of one year from the date of shi

pment from Broadcast Devices, Inc. dock. The warranty

covers repair or replacement of defective parts at the factory, provided the unit has been returned prepaid

by the user. All shipments to the factory shall have affixed to the outside of the container a

return

authorization number obtained from the factory. The above warranty is void if the unit has been modified

by the user outside of any recommendations from the factory or if the unit has been abused or operated

outside of its electrical or environment

al specifications. If customer conducted field tests suggest that the

unit may be faulty, whether or not the unit is in warranty, a full report of the difficulty should be sent to

Broadcast Devices, Inc. factory. The factory may suggest further tests or au

thorize return for factory

evaluation. Please email:

customer.service@broadcast-devices.com

Units sent to the factory should be well packed and shipped to Broadcast Devices, Inc. – Check

www.broadcast

-devices.com for current shipping address. Remember to affix the R.A. number to the

outside of the carton. Any packages received without such R.A. number will be refused. Note: freight

collect s

hipments will also be refused. When the unit has been received, inspected and tested, the

customer will receive a report of the findings along with a quotation for recommended repairs, which are

found falling outside of the standard warranty. Units returne

d for in-

warranty repairs, which are found not

to be defective will be subject to an evaluation and handling charge. In

warranty units will be repaired at

no charge and returned via prepaid freight.

Out-of-warranty units needing repair require a purc

hase order and will be invoiced for parts, labor, and

shipping charges.

When ordering replacement part, always specify A) Part Description, and Quantity; B) Date of

Purchase, Where Purchased; C) Any Special Shipping Instructions. Always specify a stre

et address, as

shipping companies cannot deliver to a postal box.

Broadcast Devices, Inc. is not responsible for any other manufacturer’s warranty on original

equipment. Nor are we responsible for any failure, damage, or loss of property that may occur

due to

the installation or operation of our equipment outside of recommended specifications.

Broadcast Devices, Inc. reserves the right to change materials, specifications, and features from

time to time.

www.broadcast-devices.com

Tel. (914) 737

-5032 Facsimile: (914) 736-6916

Email:

Customer.service@broadcast-devices.com

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