SMPTE LTC Reader
The SMPTE LTC Reader reads a Linear Timecode (LTC) in an audio signal, per the SMPTE 12M specification. The LTC Reader gives you readouts of the Hours, Minutes, Seconds, and Frames per second. There is an LED to indicate if there are any dropped frames, and a user set offset.
Use the Control Pins connected to a Control Script component with an appropriate Lua script to trigger actions within Q-SYS at a specific point in the audio file containing a Timecode, or at a specific point generated by the SMPTE LTC Generator.
Inputs and Outputs
Input Pins
Input
Audio signal pins are represented by a (
) circle, and traditional wiring is represented by a thin black line. You can use Signal Names on audio signal pins.
By default, the SMPTE LTC Reader component only has one input pin available.
Output Pins
This component does not have any output pins available.
Properties
SMPTE LTC Reader Properties
This component has no configurable properties.
Graphic Properties
Label
Use the Label property to change the name of the component in the schematic. The Label property defaults to the component name. To learn more about renaming schematic elements, see Organizing Your Design.
Position
The coordinates reference a specific place in the schematic - for example,"100,100" (horizontal, vertical). 0,0 is the upper left corner of the schematic.
Fill
Sets the fill color of the component in the schematic.
Script Access Properties
Code Name
Displays the currently assign name for control access. You can use the auto-assigned name or customize it. Q-SYS will automatically check all Code Names in the design to ensure name is unique.
Script Access
Defines whether the component will be accessible by script and/or externally, or not at all. Choices include All, External, None (default), and Script.
Tip: Use Script Programmer Mode to quickly view the Script Access setting directly on the component in the design schematic without the need to disconnect from the Q-SYS Core processor.
Controls
Frame Rate (fps)
Displays the detected incoming frame rate. Displays "Tracking..." when the frame rate is being determined, such as during frame rate changes.
Hours
Displays the number of elapsed hours, from 0-23.
Minutes
Displays the number of elapsed minutes, from 0-59.
Seconds
Displays the number of elapsed seconds, from 0-59.
Frames (fps)
Displays the number of elapsed frames, from 0-29.
Drop Frame
The indicator illuminates to indicate Drop Frame mode.
Offset
The frame offset, from 0-10, is added to the decoded time to compensate for the fact that the timecode lags the current frame by one frame. Add 1 frame to compensate. You would add more frames to compensate for the time it takes Q-SYS to make any changes required by the Lua script.
Control Pins
|
Pin Name |
Value |
String |
Position |
Pins Available |
|---|---|---|---|---|
|
Drop Frame |
0 1 |
false true |
0 1.00 |
Output |
|
Frame Offset |
0 - 10 |
0 - 10 |
0 0.100 0.200 ... 1.00 |
Input / Output |
|
Frames |
0 -29 |
0 - 29 |
0 to 1.00 1 |
Output |
|
Hours |
0 - 23 |
0 - 23 |
0.00 to 1.00 |
Output |
|
Minutes |
0 - 59 |
0 - 59 |
0.00 to 1.00 (0.017 increments) |
Output |
|
Seconds |
0 - 59 |
0 - 59 |
0.00 to 1.00 (0.017 increments) |
Output |
|
Time (elapsed time in seconds) |
0.00 - 86399 | 0.00s - 86399s | 0.00 - 1.00 | Output |
|
Timecode (hours:minutes:seconds:frames) |
Text display HH:MM:SS:FF |
Output | ||
1. The increments in the position control depend on the number of frames per second. |
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