Contemporary Research QMOD-SDI Bedienungsanleitung

Contemporary Research 1 QMOD-SDI

Product Manual

QMOD-SDI

QMOD™ HDTV Modulator

December 4, 2011

Control Firmware 4.5

Encoder Firmware 02E5

Contemporary Research 2 QMOD-SDI

Table of Contents

Table of Contents ................................................................................................................................ 2

Overview ............................................................................................................................................. 3

Features................................................................................................................................................. 3

Integration ............................................................................................................................................ 3

Specifications...................................................................................................................................... 4

Front Panel Setup ............................................................................................................................... 5

Front Panel Menus.................................................................................................................................... 5

Tips & Troubleshooting ....................................................................................................................... 7

Common Symptoms.................................................................................................................................. 7

General Symptoms and Solutions............................................................................................................... 8

RS-232 Control Protocol ................................................................................................................... 10

RS-232 Commands............................................................................................................................ 11

Control Commands ..................................................................................................................................11

RS-232 Cable Connections................................................................................................................ 13

Single QMOD-SDI ....................................................................................................................................13

QMOD-SDI Daisy-Chain............................................................................................................................13

Rack Mounting .................................................................................................................................. 14

RK1 Single Unit Rack Mount .....................................................................................................................14

RK2 Side-by-Side Rack Kit ........................................................................................................................14

RK2 EZ Dual Rack Kit, Independent Mounting ...........................................................................................14

Safety Instructions ........................................................................................................................... 15

Limited Warranty and Disclaimer ..................................................................................................... 16

Contemporary Research 3 QMOD-SDI

Overview

CR QMOD™ technology is opening the door to new HDTV applications. Create your own on-site HDTV broadband

distribution system using a variety HD, SD, and AV sources with the Contemporary Research QMOD-SDI HDTV Modulator.

No matrix routers or IP resources required, just tune in with standard displays or CR HDTV tuners.

Compact and easy to integrate, the QMOD-SDI accepts SDI, Component, or S-Video/Composite NTSC, converts the audio

and video to a digital cable channel, and amplifies for distribution through broadband cable system. Innovative in design

and value, the QMOD-SDI opens the door to cost-effective distribution of HD-SDI broadcast sources and live video, digital

signage, HD subscriber sources, and EAS emergency AV, using existing broadband coax cabling in sports, retail and

entertainment facilities, corporate offices, colleges, schools and worship centers. Front-panel buttons and text menu

display simplify QMOD-SDI setup, with options for 2-way integration with custom control systems.

Features

Auto-senses digital HD-SDI (1080i/720p) and SD-SDI (480i)

Inputs analog Component, S-Video and Composite video

Employs pro-grade HD encoding that minimizes artifacts for motion video and signage “tickers”

Merges embedded audio with video from SDI, analog stereo, digital optical and coax inputs

Switches between SDI, Component, and video inputs

Creates an HD 720p/1080i or SD 480p/480i MPEG-2 stream with MPEG1 stereo audio for broadcast

Delivers a fully agile QAM 64/256 digital cable channel 2-135

Amplifies for distribution over an on-site broadband cable system with adjustable output level, compatible with

all cable format broadband systems

Sets up with front-panel buttons and easy to use menus, including inputs, encoding, channel, and RF options

Allows creation of two-part (XX-XX) and single-part (XXX –emulates Guide channel ID) virtual channels

Responds to GPI inputs to switch to EAS composite video and audio

Integrates with RS-232 control and feedback with simple ASCII commands

Saves power and rack space using efficient design, fan-free cooling, and compact enclosure

Includes compact switching power supply

Mounts in optional 1RU single (RK1) or dual (RK2) 19” rack kits

Meets RoHS safety and California energy standards

New –Measure menu displays H/V frequency of video input

New –Free option to drive 2-4 QMOD Modulators from a 12 VDC 4A power supply. Check website or CR Sales for info.

Integration

Connect SDI, Component, S-Video or Video source

Connect audio to digital optical, coax, or stereo audio inputs

Select inputs, channel, resolution, and RF output parameters from front-panel menus

Contemporary Research 4 QMOD-SDI

Specifications

Physical

Size: 8.5” [216mm] wide x 1.73” [62mm] height (1RU) x 6.0” [153mm] deep

Weight: 1.5 lbs [0.68kg]

Temperature: +32° to 122° F operating temperature, convection cooled

Mounting: Rack mounting for one or two units side-by-side optional (RK1, RK2)

Front Panel

Power button

Setup, Select and directional buttons for front-panel setup

Menu LCD, 2 lines of 20 blue characters each

Encoding

MPEG2 Profile: MP@HL for HD, MP@ML for SD

1080i, 720p, 480p, and 480i resolution, depending on input

Video Encoding bitrate 18 or 25 Mbps

MPEG1, Layer 2 audio

Modulation

Latency

Switchable 64/256 QAM, J83 Annex B, Interleaving Modes (128,1)

MER 38 dB typical

360 ms@720p, 660ms1080i, includes all processing and tuning

HDTV modulators experience more latency, as the media is converted to

MPEG2 and QAM, then distributed over RF.

Compliance

FCC Class B, ROHS, meets California standards

Power

2.1mm coaxial jack (inside center conductor positive)

0.8 A maximum, 11.5 to 13.5 VDC, 12 VDC typical

Real Panel

RS-232

Closures

SDI Input

Video Inputs

Audio Inputs

RF Out

DB-9 male, RS-232 data link to control system

300 to 19,200 baud (9600 default), 8 data bits, no parity, 1 stop bit

3 GPI Pins in DB-9, selects composite/stereo inputs for EAS

4=1, 9=2, 5=GND

BNC Female

SD-SDI rate 270Mb/s or HD-SDI rate 1.485Gb/s

Coax cable auto-equalizer for SD up to 460m, HD up to 230m (RG6)

Auto-sense 1080i at 29.97Hz, 720p at 59.94Hz, or SD 480i at 29.97 Hz

Video Format YCbCr 4:2:2

Can accept SDI embedded Stereo 48KHz digital audio, Groups 1-4

Component: RCA Y, Pb, Pr (1080i/720p/480p/480i) , 59.94/29.97 Hz

Note: If source outputs Component on a DB-15, use VGA cable to wire to QMOD, set

QMOD to Component

S-Video: Y(Composite), C (Blue Pb) 480i, 29.97 Hz

Composite: RCA female (480i), 29.97 Hz

Digital SPDIF: Coax and TOSlink optical output, PCM 48K sample rate

Analog L and R: 2 stereo RCA female jacks

Inputs assignable to video inputs

‘F’, female, 75 ohm impedance

Agile, channels 2-135 (48-860 MHz), standard, HRC, or IRC spacing

6 MHz bandwidth fits any open channel without interference to adjacent channels

1 KHz resolution, +/- 30 ppm accuracy, +/- 35 ppm stability

29 dBmV typical output power, attenuated in 5 steps, approx 4 dB

Includes

PS12-1 Switching power supply, 1A 12 VDC, fits in typical AC power strips

PS12-4Y 4A power supply with Y cable to drive 2-4 QMODs (free at time of order)

Options

RK1 Single Rack Kit , RK2 Dual Rack Kit

CC-232 RS-232 Cable

Firmware

4.5 Improved composite video operation

4.2 adds analog H/V frequency display on LED screen

Contemporary Research 5 QMOD-SDI

Front Panel Setup

There are a number of parameters that can be set by front-panel Setup commands. In normal operation the

Up/Down arrows select channels, and the Left/Right arrows adjust volume.

Pressing Setup enters the setup menus, shows last menu accessed

Pressing Up and Down arrow keys steps through the QMOD-SDI options

Pressing Left and Right keys steps through options for each front-panel menu

Press Select to save desired option

Pressing Setup ends menu item editing or exits the front-panel setup mode

Front Panel Menus

Parameters

Basic Settings

In most cases, the menus below will work for most displays at sites.

Video Input

This selects the appropriate input:

- SDI (autosenses 1080i, 720p, 480i)

- YPbPr (1080i, 720p, 480p, 480i)

- Video (automatically uses 480i)

- S-Video (automatically uses 480i)

HD Format

Sets the video resolution Component input. SDI auto-senses; Video and S-Video

inputs are automatically set to 480i.

- 1080i - 480p

- 720p (default) - 480i

Channel

XXX

Left/Right steps through channel numbers (use Left to access high channels)

Cable Format

Standard cable frequencies (default)

HRC –same as Standard, channels 5 and 6 slightly different

IRC –All channel frequencies are different than the standard cable setting

RF Level dB

Sets the output level of the RF output, in dBmV

- 29 (default) -17

- 25 -13

- 21 - 9

Audio Input

Sets audio input for currently selected input (SDI, Component, and Video have separate

audio-follow memory)

SDI G1 –Embedded audio (normal stereo)

SDI G2 –Embedded audio

SDI G3 –Embedded audio

SDI G4 –Embedded audio

Digi (Digital) Optical

Digi Coax

Analog (default)

No Vid Color

Displays a color background with there is no video input, or the resolution doesn’t match the

QMOD settings.

- Orange

- Purple (default)

- Green

QAM Type

Today, most displays are set to tune 256 QAM. If a site has some very old displays, they

might only be able to tune in channels set to 64 QAM. Continuous Wave is often used to test

the channel with a meter.

- 64

- 256 (default)

- CW (Continuous Wave)

Contemporary Research 6 QMOD-SDI

In most applications, the basic settings on the previous page will work fine with all displays. Of course, there

are exceptions to every rule that often arise with older displays with archaic firmware, which is why we offer

a variety of encoder options and settings. A few examples include:

Older LG sets need to see the MPEG stream encoded at 18 Mbps (19.4 Mbps total).

Newer displays don’t need channel data, older sets need to see the CVCT data table.

Some displays want to see certain PMT data, while most ignore almost all values.

Parameters

Quality Settings

These adjust the overall quality of encoding

Sync Trig Lev

This is a cable compensation setting that adjusts output for different Component cables.

To see the difference in quality you’ll need a test chart from a Sencore or other HDTV signal

generator. Adjust using the same cable you’ll use for the installation.

The settings are 1-4, with 2 as the default.

Video Bitrate

This adjusts the quality of the encoded video, in M bits per second. For typical HD

satellite/cable, 18 the best solution, as the receiver’s video output rarely exceeds 12 Mbps,

and old and new display tuners will tune that in. For very good HD video sources, such as

from HDTV studio feeds on SDI or Component, 25 may produce visible improvement. Note

that some older display tuners don’t expect to see a video stream larger than 19.4, and you

may need to go down to 18 for those sets. The lower settings are for special applications and

are rarely used in normal systems.

- 11, 13, 15, 18 (default ) , 25 Mbps

MPEG Metadata

When you work with a variety of displays, old and new, you may need to change the settings

below to assure all tune the channels equally. The settings below select the type of

metadata included in the MPEG video stream.

PMT Type

Program Map Table Presets. This setting includes four presets that include various minor

data we’ve used in past installations. When a display can’t scan the channel, and you know

the other RF settings are valid, try changing the PMT type. This setting is also useful when

most of the sets tune in fine, except for few. Some Samsung sets prefer 3.

0-3 (0 is default)

CVCT

Default Cable Virtual Channel Table

On - Turns on virtual channel and short name in MPEG stream, if present

Changes QMOD display Channel to virtual channel

An “*” will appear at the end of the channel if it is virtual

Off - Turns off CVCT data, changes display back to Channel: <Physical>.1

Tip: Turn off CVCT when creating virtual channel, then turn on when complete. TVs will

need to re-scan to find the channel

EIT

Event Information Table

On, Off (Default)

Default=HDTV-Over Coax [G] (Shows in Guide in HDTV tuners)

Time/Date is fixed. May affect TV’s time and date.

Few displays need this data, generally keep off

Chan Major

Sets the Major portion of dual-part (XX-XX) or single-part (XXX) virtual channel

Press right or left arrow to start editing, use Up and Down arrows to select digit.

When Major is set to “000”, QMOD reverts to <Physical>.<Minor> mode

Chan Minor

Sets the Minor portion of the virtual channel. Set to “0” to use Major as single-part virtual

channel to emulate Guide channel ID.

Press right or left arrow to start editing, use Up and Down arrows to select digit.

Chan Name

Enters channel short name, up to 7 characters. “QMOD” is default text.

Press right or left arrow to start editing, use Up and Down arrows to select character.

Various

Firmware

Shows version

QMOD-SDI VX.X NNNN

VX.X = Control Firmware

NNNN = Encoder Firmware

Touch Right Arrow –J83B XXXXXXXXX=QAM Processor Firmware

Contemporary Research 7 QMOD-SDI

Tips & Troubleshooting

Common Symptoms

Symptom

Solutions

QMOD constantly resets –analog

inputs

Usually, the encoder is resetting because the input video isn’t set to a correct

HDTV resolution or frequency.

Check if your QMOD has V 4.1 or higher firmware, if not, go to

www.crwww.com/downloads.asp, and install new firmware to your

QMOD.

Press SETUP, then arrow up or down and locate the MEASURE menu.

This will display the exact H/V frequency of the source video.

The H/V frequencies should be:

oH:33.715K V: 29.97 for 1080i

oH:44.955K V: 59.94 for 720p

oH:31.469K V: 59.94 for 480p

oH:15.734K V: 29.97 for 480i

You may see small changes in values, especially for horizontal, that do

not affect performance.

If the source is VGA, use a scaler like the TV One iT-C2-400 to conform

the video to a true HD signal. If the source is a scaler, check its manual

to see if it can be set to the correct vertical frequency. Some cameras

with HD Component Out can be set to 60/59.94 Hz.

QMOD SDI switches to

background color during setup or

occasionally.

The SDI input processor constantly tests the quality and resolution of the SDI

input, then auto-syncs the QMOD resolution to match 1080i 27.97 Hz, 720p 59.94

Hz, or 480i 29.97 Hz. If you’re getting a color background, watch the bottom right-

hand corner of the QMOD LED screen for:

“*” symbol – means the quality of the SDI signal is poor quality

“?” symbol – the SDI resolution does not match the above 3 settings.

Usually, the source video might be set for 60 Hz. Change the source

settings to the correct frequency.

QMOD channel tunes fine

connected directly to a TV, but

not when combined with in-house

RF system.

There are several classic caused for this. When you insert the channel into the

house system, there are added interference and level issues.

If you’re mixing with an incoming cable feed, assume there are no

“empty” channels. Usually, your QMOD channel conflicts with an existing

cable channel. Read the QMOD Integration Guide to learn how to use

blocking filters to screen out the offending cable channel.

When your combining the QMOD channel with an existing system, it has

to be set to the right RF level. For example, if the analog channels are

running at 55 dBmV, you’ll need an RF amplifier to raise the QMOD 29

dBmV out to at least 45 dBmV.

Use a digital RF meter.

QMOD channel is Green

Also could be Orange or Purple. This is the color background the QMOD inserts

when there is no or improper video input. This means that the QMOD is working,

the channel is tuned correctly, but there is an input problem. It’s also good test

signal when you set up QMODs before the sources are connected. You can also

feed audio to the QMOD and test that as well.

Contemporary Research 8 QMOD-SDI

General Symptoms and Solutions

Symptoms

Solutions

Status Codes

Appears on QMOD front panel display

SDI Lock

“*” appears at end of bottom line when not locked to SDI signal

“?” appears when SDI is locked but at incorrect resolution or Hz

Virtual Channel

“*” appears at end of top line when QMOD is using a virtual channel.

Encoder Error

“R” appears at top left of front panel display, notes the encoder is resetting:

Usually the VGA or scaler output is not set to 1080i/720p 59.94 Hz

–Use the Measure menu to see the H and V frequency

Press the left and right arrows together to reset the QMOD

If neither fixes the condition, call CR Support

“X” appears, notes there is no communication with the encoder

If you check the Firmware menu, the last 4 characters will likely be

“0000” instead of “02E5”

Call CR Support

No composite video signal

“V” Appears when the QMOD is in Video Input, and no video is

present. Goes away when video is active.

No FPGA firmware (QAM)

“xxxxxxx” appears when you use the firmware loader, or press the

right arrow when you view the firmware version on the QMOD.

V X.X = Control Firmware

02A2 = Encoder Firmware

J83B and following = FPGA firmware

“xxxxxxx” means that the FPGA firmware is incomplete or

corrupted.

Re-install firmware or call CR Support if you can’t update.

Green screen

That’s good news – it means the TV is receiving the channel from the QMOD.

The green (or blue, purple) background means that there is no video input or

the resolution of your source doesn’t match the QMOD settings.

Black Screen or No Signal

Reset the QMOD by pressing the Left and Right arrows together.

Component

No video –check input wiring and settings

Tip –you can use RCA to HD15 cable to connect YPbPr

Wrong resolution –set both to match each other

Wrong vertical frequency, source must output 59.94 Hz

Press left and right panel buttons together to reset encoding

PC VGA

PC graphic cards rarely output video-standard HDTV at 720p/1080i, 59.94 Hz

–use VGA scaler

TV One iT-C2-400

Extron DVS-340 (with recent firmware)

Set scaler Hz to 59.94 (some state 60Hz but do 59.94 on YPbPr outputs)

DVD

Check cables and input setting

Some players only output 480p/480i on Component

Try changing Resolution

Tuning Issues

Displays not finding channel in scanning, or have problems locking on to

channel.

Update QMOD Firmware

Check CRWWW.COM for the latest firmware, download, and install.

Update Settings

The update won’t affect your current settings. Make sure you are set to Vid

Bitrate 18, CVCT On, QAM 256, PMT 0.

Test offline

Test a sample TV connected directly to the QMOD to eliminate problems in

the RF system.

No audio

For embedded SDI audio, update to firmware 3.8 or higher. This allows

playback of AES audio that does not use an error correction bit

Check audio inputs and wiring

Set source digital source output to PCM

Some Sharp displays lack the standard QAM codec to play MPEG1 stereo,

those models should be avoided for commercial sites.

Contemporary Research 9 QMOD-SDI

Signage

Digital signage presentation almost always require a scaler to

format the output for HDTV displays

Green Screen

Use VGA scaler, set to 720p/1080i, 59.94 Hz

Edges cut off

Most HDTV displays overscan video, underscan video to fit to

displays

Design signage with safe area

Positioning

Use Up, down, left, right scaler adjustments to fit

Improve thin lines, small text quality

Using a signal generator or test graphic, adjust quality with Sync

TrigLev setting 1-4. The cable can make a difference at this setting,

so use the same cable for testing as you use for the install.

DirecTV

The DirecTV HD receiver default settings can shift resolutions

between 1080i, 720p, and 480p, depending on programming.

HDTV setup

Go to HDTV menu

Select Video and turn Native Mode off

Select Resolution and turn all modes off but 720p

Go to Audio, and turn Dolby Digital off

Contemporary Research 10 QMOD-SDI

RS-232 Control Protocol

Overview

The QMOD-SDI full duplex RS-232 enables a system programmer to control all functions as well as monitor

status. All commands are sent as ASCII strings. No delays between characters or commands are required, as

data is interrupt driven and buffered.

One QMOD-SDI may be daisy-chained together with a CR 232-series tuner from a single RS-232 port. The

QMOD-SDI is pre-set to Unit 1, and the tuner would be set to Unit 2.

Communications parameters (Front Panel Mode 1) are 300 to 19200 baud, 8 data bits, No parity, and 1 stop

bit. Factory default is 9600 baud, Unit#1.

All settings are saved to NVRAM in the QMOD-SDI.

The QMOD will accept non-standard RS-232 control such as voltage that swings from 0 to +5 VDC,

commonly found when IR ports are used to send RS-232 commands.

General protocol specifications

Characters in command strings to the QMOD-SDI are common ASCII keyboard characters.

Command strings sent to the QMOD-SDI begin with the ASCII > (greater than symbol) as an 'Attention'

character and end with carriage return - ASCII CR, Hex $0D, or keyboard Enter - as an 'End-of-command'

character.

Responses from the QMOD-SDI begin with the ASCII < (less than symbol) as an 'Attention' character and

end with a carriage return followed by line feed an ASCII LF or Hex $0A as 'End-of-command' characters.

A carriage return is required at the end of each command and is assumed in all examples.

Command String Structure

[Attention] (Unit#) [Command] (Parameters) [Return]

Attention Single character (>) starts the string

Unit# The Unit# is expressed as an ASCII 0-9 when used in multiple tuner applications.

To address all units, use a Unit # of 0 (Zero)

No unit number will default to Unit#1

Command A two-character command

Parameters Added attributes to some commands

Return A carriage return ends the command string, you may use ASCII CR, Hex $0D, or keyboard

‘Enter’ in programming. For simplicity, the programming examples in the manual will not

show the ‘CR’ – so remember, you’ll need to add it in your control code.

Command and Status Response

Commands can be sent back to back at any time without any delay. To allow for rapid, multiple commands,

status responses are intentionally delayed by about 125mS, sending the most current status in response to

control commands or user actions.

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