Professional Video 
Video Mixing LVS-400
Video Mixing LVS-400
Simple, straightforward operation for all your mixing requirements.
Now it is even easier to get professional video results in your event-center with the LVS-400. This compact, simply-operated 4 channel video switcher is so easy to use, that even without any previous video experience, you can create very professional video transition and key effects for a professional video performance. Ideally suited for installations, the LVS-400 offers both BNC and S-Video inputs & outputs. It includes 17 back-lit buttons for easy control in low-light environments, a T-Bar for manual transitions, a time control for button-controlled transitions, & two effect control knobs. You can easily cut from source to source, simply by pressing the button of the input you want. You can preview these sources on your preview monitor output before you send it to your main out. You can use two different wipes or a dissolve taking up to 4 seconds to finish a transition. You also have an output on/off option to fade to black when not in use while you prepare your next shot in your preview monitor.
The LVS-400 is incredible. It is incredibly powerful, incredibly easy to use, and offers incredibly clean video throughput. If it is time to offer clean video to your events, the LVS-400 is the most effective addition you can consider. The LVS-400 is a part of the Roland SD video mixer line. See the SD Mixer Comparison.
- Easy to operate User Interface for mixing Video Sources.
- Back-lit Buttons for easy operation in low-light.
- BNC connectors for firmly locking cable connections.
- High-quality and stable video image.
- Digital processing for impressive image quality & two individual frame synchronizers.
- Picture In Picture & Key functions for super-imposing one video source on another T-Bar for manual control of video Mixing.
| LVS-400 | ||
| Video Format | NTSC or PAL (ITU601) | |
| Video Sampling Rate | 13.5MHz, 4:2:2 (Y: B-Y: R-Y), 8-bit Frame Synchronizer x 2 |
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| Video Input | S-Video: 4-pin mini DIN type x 4 Video (composite): BNC type x 4 (If S-Video is simultaneously, S-Video takes priority) |
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| Video Output | S-Video: 4-pin mini DIN type x 1 Video (composite): BNC type x 2 |
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| Monitor Output | Video (composite): BNC type x 1 | |
| Input/Output Level and Impedance | S-Video: Luminance signal=1Vp-p, 75ohm, Chrominance signal=0.286Vp-p, 75ohm (NTSC), 0.3Vp-p, 75ohm (PAL) Composite: 1Vp-p, 75ohm |
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| Control Connectors | MIDI IN: 5-pin DIN type MIDI OUT: 5-pin DIN type |
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| Transition Effects | Mix (Dissolve), Wipe 1, Wipe 2 | |
| Composite Effects | Picture-in-Picture (4 types), Luminance Key (2 types), Chroma Key |
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| Power Supply | DC 9V (AC Adaptor) | |
| Current Draw | 1500mA |
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| Accessories | BNC-RCA Adapter x 4 | |
| Size and Weight | ||
| Width | 365 mm | 14-3/8 inches |
| Depth | 259 mm | 10-1/4 inches |
| Height | 87 mm | 3-7/16 inches |
| Weight | 3.0 kg | 6 lbs. 9 oz. |
| *The specifications are subject to change without notice. | ||
questions about products
- What is DSK (downstream keyer)?
"When video merging and/or mixing is done at the upstream side and the key merging is done at the down stream side[virgula] the merging function at the downstream side is called ""downstream keyer"" (DSK).
In general[virgula] logos and text are generated by DSK. This function allows you to keep a log or text displayed while switching videos or using the Picture-in-Picture display on the background."
Did this help? Yes No
- What is the difference between the PGM OUT terminal and A/B MIX OUT terminal?
"LVS-800 provides two types of output terminals[pvirgula] A/B MIX OUT terminal and PGM OUT terminal).
The A/B MIX OUT terminal only outputs the result of switching between the bus A and bus B (A/B MIX).
The PGM OUT terminal outputs the result of merging a logo or text with the result of A/B MIX.
The final output fade is only available for PGM OUT."
- The field of view of videos output from the PGM OUT terminal differs from those output from MONITOR OUT?terminal.
"Input analog signals are output from the PGM PVW terminal or MONITOR OUT terminal as analog signals. However[virgula] videos output from the PGM OUT terminal are internally converted from the input analog signals into digital signals[virgula] and the field of view information is not added to them.
The field of view can vary depending on the display connected and/or its setting and you need to adjust the aspect ratio of the I/O signals of the device connected to LVS-800."
- What can I do by using the RS-232C terminal for external control?
"LVS-800 allows you to control switching operation and effects via the RS-232C terminal from an external controller such as a PC. You can:
* Select the input channel for bus A and bus B.
* Select the channel for the foreground an background for DSK.
* Control the video fader.
* Control other operations available on the panel."
- Can I start the device with an arbitrary input channel selected?
"You cannot start LVS-800 with a particular input channel selected[virgula] but you can save the status of each operation knob with the PANEL PREST button.
By saving the status with a particular input channel selected[virgula] you can invoke this status after power on just by pressing the PANEL PREST button."
- Can I change the size and position of the child window of the Picture-in-Picture function?
"Yes[virgula] you can do it by using the configuration menu.
Four combinations of the position and size of the child window are assigned to the four PinP buttons at factory.
By changing this assignment using the configuration menu[virgula] you can display the child window with the specified size at the specified position by pressing the corresponding PinP button."
- How many child windows of the Picture-in-Picture function can be displayed?
"Up to two child windows can be displayed.
You can display one child window at the A/B-MIX side and additional one at the DSK side.
By using the PinP function at both sides[virgula] you can display two child windows on the monitor connected to the PGM-OUT terminal. "
- The t-bar doesn´t work. Doing transitions with the buttons still works. What are some steps we can take to troubleshoot this problem.
"Your T-bar may require calibrating. To do this[virgula] connect a TV monitor to the MONITOR OUT jack. - Power up the LVS-400 while holding down the MONITOR-1 and MONITOR-4 buttons. - The ""LVS-400 Test Menu"" will appear. - Use the MONITOR-2 or MONITOR-3 buttons to select 01:Tbar Set. - Press MONITOR-4 to enter 01:Tbar Set. - Move the Fader to the MAIN (bottom) bus and press the INPUT 1 button on the MAIN (bottom) bus. The MAIN value will be set. - Move the Fader to the INSERT (upper) bus and press the INPUT 1 button on the INSERT (upper) bus. The INSERT value will be set. - Press the MONITOR-1 and MONITOR-4 buttons to exit the Menu. Turn off the LVS-400 and restart normally. Your T-bar should now operate normally. ***Don not adjust any other parameters in the Test Menu[pvirgula] doing so can cause catastrophic failure to the LVS-400 and is not covered as a warranty failure!*** If calibrating does not solve the problem[virgula] please call us at your local RSG office for repair."
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