Reading a Waveform - Panasonic BTLH-1700

OCFilmsSean

OCFilmsSean

Member
I searched the forum and did not see an answer so I am starting a new thread. Hope everyone is doing well!

I have purchased a Panasonic BTLH-1700 for use in conjunction with my HVX200. What an amazing monitor. With that said, I am trying to find out as much information as possible on how to operate it. I do not know how to read it's waveform. In addition if anyone has suggestions on the setting etc.

Thank you,
Sean Saint-Louis
 
Waveform monitors display the luminence (black and white) levels of your input signal.

On the particular waveform display on the BT-LH1700WP monitor, the line on the bottom is black (0-IRE) and the line on the top is white (100-IRE). The waveform monitor is generally used to set your exposure. If your signal goes above 100-IRE, the image is over exposed. If you look around on google, you can most likely find a better explination than mine.

I hope I helped.

Best regards,

Andrew Hoffman
Senior Operations Manager
Specialized Communications Corp.
20940 Twin Springs Dr.
Smithsburg, MD 21783-1510 USA
800-359-1858
301-790-0103
Fax: 301-790-0173
andrewh@spec-comm.com
www.spec-comm.com

Please visit our new online store at ( http://www.spec-comm.com/store ). New products being added daily!
 
Oh and I forgot about setting it up! :)

To properly setup your monitor, input SMPTE bars. For more info on SMPTE bars, click HERE.

Set one of your user buttons to "BLUE" and activate it. All of you color "guns" will be turned off except for blue. Now, you'll notice an offwhite bar on the left (75-IRE) with a small blue block below it and all the way to the right a large blue bar with a small offwhite block below it. With the blue mode turned on, adjust the "Color" adjustment until the seem between the white bar and blue block and the blue bar and white block goes away. The shade of both bars and block should match perfectly.

Next without the blue mode turned on, you will notice a cyan bar toward the middle with a magenta block below it and a magenta bar with a cyan block below it. Turn the blue mode back on and adjust the "HUE" (or tint) so that the seem goes away just like you did when you adjusted the color.

Now that all four blue bars match, turn the blue mode off.

At the bottom right corner of the SMPTE bar pattern, you'll notice a set of three dark bars. They are called "Pluge Bars". Adjust your brightness so that you can only see the lightest pluge bar. Then set your contrast by looking at the white bar and set it just below blooming (over saturation of the white bar.)

I hope this helps and isn't more confusing.

Best regards,

Andrew Hoffman
Senior Operations Manager
Specialized Communications Corp.
20940 Twin Springs Dr.
Smithsburg, MD 21783-1510 USA
800-359-1858
301-790-0103
Fax: 301-790-0173
andrewh@spec-comm.com
www.spec-comm.com

Please visit our new online store at ( http://www.spec-comm.com/store ). New products being added daily!
 
Many thanks

Many thanks

Andrew, I just walked through the process. It helped out greatly. It seems as if the monitor comes perfectly calibrated from the factory. I am assuming that the picture will change over time and this will require "tuning" the image?

As for the use of waveform, Thank you. That is a good start.

I would like to know more and have not found a good article on google... If anyone has a suggestion I would greatly appreciate it.


-Sean
 
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