Imagine Communications Timecode Interface Instruction Manual

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Instruction Manual

5300CI SMPTE

Timecode Interface

Revision: A

175-100134-00

Delivering the Moment

Publication Information

Imagine Communications considers this document and its contents to be proprietary and confidential.

Except for making a reasonable number of copies for your own internal use, you may not reproduce this publication, or any part thereof, in any form, by any method, for any purpose, or in any language other than English without the written consent of Imagine Communications. All others uses are illegal.

This publication is designed to assist in the use of the product as it exists on the date of publication of this manual, and may not reflect the product at the current time or an unknown time in the future. This publication does not in any way warrant description accuracy or guarantee the use for the product to which it refers. Imagine Communications reserves the right, without notice to make such changes in equipment, design, specifications, components, or documentation as progress may warrant to improve the performance of the product.

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Contact Information

Imagine Communications has office locations around the world. For locations and contact information see:

http://www.imaginecommunications.com/contact us/

Support Contact Information

For support contact information see:

▪ Support Contacts: http://www.imaginecommunications.com/services/technical support/

▪ eCustomer Portal: http://support.imaginecommunications.com

FCC COMPLIANCE STATEMENT

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 in a commercial installation. This equipment generates, and can radiate, radio frequency energy, and, if not installed and used in accordance with standard installation procedures and instructions, 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 the user’s own expense.

5300CI

SMPTE COMPUTER TIME CODE INTERFACE

INSTRUCTION MANUAL

SECTION 1: Introduction

SECTION 2: Operational Modes

2.1

5300CI SMPTE Computer Time Code Interface . . . . . . . . . . . . . . . . 2-1

2.1.1

Time Code Reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1.2

Time Code Synchronizer . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2

5300CI-G SMPTE Computer Time Code Interface . . . . . . . . . . . . . . . 2-2

2.2.1

Time Code Reader/Generator . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.2.1.1

Time Code Reader . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.2.1.2

Time Code Generator . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.2.2

Time Code Synchronizer . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.2.3

Time Code Synchronized Generator . . . . . . . . . . . . . . . . . . . . 2-3

SECTION 3: Hardware Details

3.1

Input/Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2

Setting the Output Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.3

Setting the Input Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.4

DIP Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

SECTION 4: Other Software-Accessible Features

4.1

Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2

Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.3

Initializing the Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.4

Interrupt Handler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.5

Reading Time Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.6

Miscellaneous Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

5300CI i

SECTION 1: Introduction

The 5300CI SMPTE Computer Time Code Interface provides simple-to-use SMPTE time code reading, or reading and generation, for IBM® PCs, ATs, and compatibles. It has its own built-in CPU, and does not require background processes that may interfere with other resident software. This card has two models: the 5300CI and the 5300CI-G.

Both the 5300CI and the 5300CI-G can be used as SMPTE longitudinal time code readers. These cards can read time code, and display it on the screen as hours, minutes, seconds, and frames. The reader is compatible with all formats of the SMPTE longitudinal time code.

The 5300CI-G is also designed to generate SMPTE longitudinal time code, allowing the user to set the start time and stop time code generation. Time code generation can continue while other programs are being executed on the PC. Please note that the reader and generator functions are mutually exclusive; that is, they cannot operate simultaneously.

In addition, both models of the 5300CI can be used to synchronize the clock in an IBM® PC, AT, or compatible to house (or Master) time distributed via SMPTE. With its generator function, the 5300CI-G can also serve as a source for house time.

5300CI 1-1

SECTION 2: Operational Modes

2.1 5300CI SMPTE Computer Time Code Interface

The 5300CI can be used as a direct SMPTE time code reader, using the program SMPTE.EXE on the support software distribution disk. Running the SMPTE program brings up a reader menu. The F10 key is used to exit the program.

NOTE: The reader program does not use interrupts.

When in the reader menu, the card is configured as a SMPTE time code reader. The current time code is displayed as read at the bottom of the menu. If no time code is being fed to the card, the words NO

SMPTE are displayed instead.

2.1.2 Time Code Synchronizer

The 5300CI can be used to synchronize the PC internal clock to a house time source distributed via time code. The program SMPTESET.COM performs this function.

SMPTESET is invoked by the following command line: SMPTESET /x where x is the interrupt number to be used by the card. This interrupt is set by Jumper J1 on the card. The interrupt to use is dependent upon the availability in a particular machine. Normal interrupt uses are as follows:

Interrupt

PC Usage

Usually free

COM2

AT Usage

Reserved

COM2

COM1

Fixed Disk

COM1

Free

6 Diskette Controller Diskette Controller

7 LPT1 LPT1

The recommended interrupt selections are 2 in PCs and 5 in ATs. Jumper the card correctly prior to its insertion in the machine. If Interrupt 2 is used, type: SMPTESET /2 . If Interrupt 5 is used, type:

SMPTESET /5

Once started, the SMPTESET program remains in memory, occupying less than 1KB. It keeps the system time equal to the received time at all times.

The SMPTESET program can also be started automatically each time the computer is booted by inserting the above command line in the computer’s AUTOEXEC.BAT file. This will cause the computer to lock to the external SMPTE signal, if available, each time the system is turned on.

NOTE: The program SMPTE cannot be run while SMPTESET is running, since this program assumes control of the 5300CI.

5300CI 2-1

SECTION 2: OPERATIONAL MODES

2.2 5300CI-G SMPTE Computer Time Code Interface

The 5300CI-G can be used as a direct SMPTE time code reader/generator. The program SMPTE.EXE on the support software distribution disk allows the card to be used as either a time code reader or generator.

Running the SMPTE program brings up one of two menus: a reader or a generator menu. The F1 is used to toggle between the menus. The F10 key is used to exit the program.

NOTE: The reader/generator program does not use interrupts.

When in the reader menu, the 5300CI-G is configured as a SMPTE time code reader. The current time code is displayed as read at the bottom of the menu. If no time code is being fed to the card, the words

SMPTE are displayed instead.

2.2.1.2 Time Code Generator

When in the generator menu, the 5300CI-G is configured as a SMPTE time code generator. The generator menu has several options. The generation of time code can be started and stopped with the F2 and F3 keys, respectively. The operation of these keys is similar to the start and stop functions on a standard tape deck.

The F4 key allows the user to enter a new time code. If the generator is running at the time this function is selected, it will be stopped so that the user can enter the new time code. The generator must then be restarted by pressing F2.

The F5 key stops the generator and presets the time code to 1:00:00/00. This is a common start time for programs that utilize time code. Starting a program at this point ensures that the program will not cross

0:00:00/00 (a problem for some synchronizers), but will have some room at the beginning for adding lead-ins, etc. Following the preset, the generator must be restarted by pressing F2.

The F6 key synchronizes the time code generator to the PC clock. This makes it easy to synchronize two or more PCs to the same time. The generator restarts immediately.

NOTE: The generator does not stop upon exiting from the SMPTE program. The generator continues to operate in a background even after the program has been exited.

2-2 5300CI

SECTION 2: OPERATIONAL MODES

2.2.2 Time Code Synchronizer

The 5300CI-G can be used to synchronize the PC internal clock to a house time source distributed via time code. The program SMPTESET.COM performs this function.

Interrupt

PC Usage

Usually free

COM2

AT Usage

Reserved

COM2

COM1

Fixed Disk

COM1

Free

6 Diskette Controller Diskette Controller

7 LPT1 LPT1

SMPTESET /5

Once started, the SMPTESET program remains in memory, occupying less than 1KB. It keeps the system time equal to the received time at all times.

2.2.3 Time Code Synchronized Generator

The 5300CI-G can be used to generate time code synchronized to the PC internal clock in order to serve as a house time source. The program SMPTEGEN.COM performs this function.

SMPTEGEN is invoked by the following command line: SMPTEGEN /x where x is the interrupt number to be used by the card. This interrupt is set by Jumper J1 on the card. The interrupt to use is dependent upon the availability in a particular machine. Normal interrupt uses are as follows:

Interrupt

PC Usage

Usually free

COM2

AT Usage

Reserved

COM2

COM1

Fixed Disk

COM1

Free

6 Diskette Controller Diskette Controller

7 LPT1 LPT1

The recommended interrupt selections are 2 in PCs and 5 in ATs. Jumper the card correctly prior to its insertion in the machine. If Interrupt 2 is used, type:

SMPTEGEN /2

. If Interrupt 5 is used, type:

SMPTEGEN /5 .

Once started, the SMPTEGEN program remains in memory, occupying less than 1KB. It keeps the generated time equal to the system time at all times. Normally, SMPTEGEN will be installed in the computer’s AUTOEXEC.BAT file.

5300CI 2-3

SECTION 2: OPERATIONAL MODES

NOTE: The program SMPTE cannot be run while either SMPTESET or SMPTEGEN are running, since these programs assume control of the 5300CI-G.

2-4 5300CI

SECTION 3: Hardware Details

3.1 Input/Output Connections

The time code input is a balanced audio input. Pins 2 and 3 of the DB-15 connector are for input, with

Pin 1 used for ground. Polarity is not important on the input or output. If an unbalanced input is used, ground the other input pin.

Time code output is on Pins 5 and 6, with Pin 4 being the associated ground. The input and output levels are preset to 0 dBm.

3.2 Setting the Output Level

The time code output left is preset at the factory to 0 dBm. This level can be adjusted by varying the setting of R20. This pot is labeled OUT on the card.

With the card in the generator mode, adjust R20 until the desired level, as measured on the output terminals, is achieved. Turning the control to the right increases the output level. It is recommended that this adjustment be made with the card connected to normal output termination (600

Ω

3.3 Setting the Input Level

The input level control, R6, is adjusted at the factory for maximum capture range. Field adjustment should not be necessary, and is not recommended.

3.4 DIP Switch Settings

The 5300CI and 5300CI-G SMPTE Computer Time Code Interfaces have been preconfigured to an address of 310h. The software included with the card expects it to be at that address. The correct DIP switch settings, should they be changed accidentally, are as follows:

Switch Setting

1 ON

2 ON

OFF

5300CI 3-1

SECTION 4: Other Software-Accessible Features

NOTE: This information is furnished as a courtesy to users of the

5300CI and 5300CI-G SMPTE Computer Time Code Interfaces who may wish to make use of additional features of the card that are not available with the standard software provided.

Utilization of the information supplied herein may require proficiency in computer programming.

No warranty is provided on the information or features described herein, nor will any further support of any kind be given except on a custom basis at additional cost.

Modifications to the 5300CI and

5300CI-G may be made without notification, and there are no guarantees that the software features described herein will be supplied or supported in the future.

4.1 Interrupt

The following information is necessary when using the 5300CI in a customized programming environment.

1) The interrupt is jumper-settable on the card, and is usually set to 5.

2) The I/O address is 310h (DIP Switch selected). There is only one address.

3) The interrupt is generated immediately following time code receptions, where the seconds field is 30, and the frames field is 0.

4) Additional interrupt options are available at the beginning and end of time code, and upon response to the PC system.

5) Interrupts are also generated when time code is lost and regained.

6) Time is set once per minute.

4.2 Commands

The procedure for sending a command to the 5300CI is as follows:

1) Output the command to 310h.

2) Read 310h, and wait for the commands response. This step is required if a fast PC is used. The response time is several milliseconds.

3) To avoid a BUSY WAITING FOR COMMAND response, the card can be set to generate an interrupt upon response, allowing for a fully interrupt-driven support routine.

5300CI 4-1

SECTION 4: OTHER SOFTWARE-ACCESSIBLE FEATURES

Command Description

commandPC Receives commands from the PC and executes them.

28h

29h

2ah

2bh

2ch

2dh

2eh

2fh

0000xxxx

0001xxxx

001000xx

0011xxxx

0100xxxx

0101xxxx

01100xxx

0111xxxx

1000xxxx

1001xxxx

10100xxx

1011xxxx

1100xxxx

1101xxxx

111000xx

1111xxxx

Set Frame units

Set User Group 1, 4 bits

Set Frame tens

Set User Group 2, 4 bits

Set Seconds units

Set User Group 3, 4 bits

Set Seconds tens

Set User Group 4, 4 bits

Set Minutes units

Set User Group 5, 4 bits

Set Minutes tens

Set User Group 6, 4 bits

Set Hours units

Set User Group 7, 4 bits

Set Hours tens

Set User Group 8, 4 bits

Clear enhanced (29h — 2fh) features

Set host interrupt on each response

28h

29h

Set host interrupt at end of time code 2ah

Set host interrupt at start of time code 2bh

Set writes to buffer time

Set writes to generator time

Set buffer time valid for send

2ch

2dh

2eh

26h

27h

24h

25h

26h

27h

24h

25h

26h

27h

24h

25h

24h

25h

26h

27h e8h e9h eah ebh ech edh

Rec Time read request

Gen Time read request

Set stopped mode

Set receive mode

Set generating mode

Get current mode

Dummy Commands for Synchronization

eeh Dummy Command efh Dummy Command

Response

e8h e9h eah ebh ech eah, ebh, ech eeh efh

4-2 5300CI

SECTION 4: OTHER SOFTWARE-ACCESSIBLE FEATURES

Command Description

68h

69h

Read rfru - Frame units

Read rug1

- User Group 1, 4 bits

6ah

6bh

6ch

6dh

6eh

Read

Read rfrt - Frame tens rug2

- User Group 2, 4 bits

Read rsecu - Seconds units

Read rug3

- User Group 3, 4 bits

Read rsect

- Seconds tens

6fh a8h a9h aah abh ach adh aeh afh

Read rug4

- User Group 4, 4 bits

Read rminu

- Minutes units

Read rug5 - User Group 5, 4 bits

Read rmint

- Minutes tens

Read rug6 - User Group 6, 4 bits

Read rhru

- Hours units

Read rug7 - User Group 7, 4 bits

Read rhrt

- Hours tens

Read rug8 - User Group 8, 4 bits

Interrupt Status Values

68h Time set interrupt (Seconds=30, Frames=0)

69h

6ah

6bh

6ch

Gained time code

Lost time code

End of time code interrupt (after User Group 8)

Start of time code interrupt (after last sync bit)

Response

0000xxxx

0001xxxx

001000xx

0011xxxx

0100xxxx

0101xxxx

01100xxx

0111xxxx

1000xxxx

1001xxxx

10100xxx

1011xxxx

1100xxxx

1101xxxx

111000xx

1111xxxx

No SMPTE time code is indicated by a frame unit of h’f (normally impossible).

NOTE: Enhanced features 28h — 2fh and the interrupt status values were added in Firmware Revision 2.02, and are not available in earlier firmware revisions. Contact the factory for information on an update.

4.3 Initializing the Card

The procedure for initializing the card is as follows:

1) Send the Set Receive Mode command (ebh).

2) Set the interrupt vector in the PC.

3) Activate the interrupt vector in the PC (unmask).

5300CI 4-3

SECTION 4: OTHER SOFTWARE-ACCESSIBLE FEATURES

4.4 Interrupt Handler

The Interrupt Handler does the following:

1) Reads time code from the card.

2) Sets the PC clock from time code.

4.5 Reading Time Code

1) Send the Rec Time read request (e8h). This causes the current time to be copied into a reading area. This is done to allow accurate asynchronous reads.

2) Read each 4-bit SMPTE group using commands 68h — afh. Obviously, if the user bits are not needed, it is not necessary to read them. These can be read in any order.

4.6 Miscellaneous Notes

1) Reading the card port clears the interrupt. You must also be sure to clear the PC interrupt controller (ie.

out 20h,20h

2) A lack of input time code is indicated by a frame unit of 0fh

3) The 5300CI cannot send and receive at the same time.

4) The data read is raw, and includes drop frame, color bits, etc.

4-4 5300CI

Customer Service Support

+1 888 534 8246

[email protected]

Harris is a registered trademark of Harris Corporation. Trademarks and tradenames are the property of their respective companies.

Broadcast Communications Division

25 Dyas Road | North York, ON M3B 1V7 | Tel: 1 (416) 445 9640

www.broadcast.harris.com

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