Phone in the UK: +44 7826 178752 [email protected]

LV5381 – Waveform Monitor for HD/SD SDI Signals

HD-SDI symbolSD-SDI symbol



LV5381 – MULTI SDI MONITOR Simultaneous Monitoring up to Four SDI Signals

The LV5381 is a waveform monitor that can monitor up to four SDI signals simultaneously. It is optimized for the level adjustment of the outputs of multiple installed cameras. In the video signal waveform display, vector display, and picture display, multiple input signals can be displayed on top of each other or lined up next to each other.

It is also full of useful features such as a level meter display for embedded audio, an error display that indicates transmission errors, and a 5-bar display that shows video signal peak levels using five bars. Furthermore, the LV5381 can show different combinations of these displays in its multi-screen display.



  • Simultaneous Monitoring of Four Inputs
    The LV5381 is a waveform monitor with a built-in 8.4-inch TFTLCD. It can display up to four SDI input signals of the same format simultaneously. The LCD is an XGA display (1024 x 768 pixels) that boasts high color reproduction.  This makes the LV5381 useful for picture monitoring as well.
  • Rich Assortment of Display Features
    Not only does the LV5381 have essential displays for video signal quality monitoring, such as a video signal waveform display and a vector display, it also has a rich assortment of other display features such as a picture display, audio level meter display, 5-bar display, transmission error detection, and gamut error detection.
  • Wide Variety of Display Formats
    In the video signal waveform display, vector display, and picture display, the LV5381 can display up to four input SDI signals on top of each other or side by side. This makes it suitable for adjusting the gain and black balance values of multiple cameras. In the video signal waveform and vector displays, the LV5381 can make different waveforms easier to see by using a different waveform color for each input channel.
  • Extremely Flexible Display Layouts
    Each of the different displays can be shown on a single screen, or the multi-screen display feature can be used to divide the screen into four areas with a different display shown in each area. The video signal waveform display, picture display, and audio level meter display can be shown as a thumbnail display on the one-screen display.
  • Video Signal Waveform Display
    The input Y CB CR signal can be converted to an RGB or pseudocomposite signal and shown on the video signal waveform display. The video signal waveform display has a rich assortment of features such as waveform magnification and line selection.
  • Picture Display
    The picture display has a wide variety of picture monitoring features, such as color temperature specification; brightness, contrast, and aperture adjustment; and the display of gamut error locations.
  • Standard-Equipped CINELITE Ⅱ
    The CINELITE feature makes it easy to manage the levels of specific points on the picture display. This is useful for adjusting the gain of multiple cameras through the use of the same reference point. The CINEZONE feature makes it possible to check the luminance distribution of the whole picture display at a glance.
  • S-LOG2  Exposure Function Capabilities (Option)
    In order to manage the challenges of the S-LOG2 (exposure) feature in certain cameras, Leader has created an option for it.  You can now see clearly the details that are included in a shot by turning on the Low Key function (for over-exposed images) or High Key function (for under-exposed images).   In addition, now the image can be zoomed in on the instrument without affecting the focusing captured from the camera.  
  • Screen Capture Feature
    The display can be captured and stored as image data. The captured data can be displayed on the LV5381. Additionally, it can be saved as bitmap files to USB memory, which makes it possible to view the data on a PC.
  • External Sync Signal Input
    The LV5381 can receive a tri-level sync signal or an NTSC or PAL black burst signal as its external sync signal and then display video signal waveforms with this sync signal as its reference.
  • Presets
    Stores up to 30 front panel presets.
  • Key LEDs
    All the panel keys have LEDs. This makes it easy to find the keys even in dark environments.
  • Last Memory
    Equipped with a feature that stores panel settings to memory.
  • ID Display
    IDs can be assigned to input channels. IDs are entered from the LV5381 panel.
  • Stereo Headphone Output
    The LV5381 can deliver the embedded audio of an SDI signal in stereo through the headphone output jacks.


LV5381 Data Sheet

For a full list of the technical specifications, please download the instruction manual for this product.
(Registration to this website is required).


HD-SDI and SD-SDI Video Signal Formats and Standards

Color System
Frame (Field) Rates
Compliance Standard
YCbCr 4:2:2 10 bits 525i 59.94 SMPTE 259M
625i 60
720p 60, 59.94, 50, 30, 29.97, 25, 24, 23.98 SMPTE 292M
1080i 60, 59.94, 50 SMPTE 274M
1080p 30, 29.97, 25, 24, 23.98
1080PsF 30, 29.97, 25, 24, 23.98 SMPTE 292M

Supported Formats of Dual Link System (LV5381-OP01) Video Signal Formats and Standards

Color System
Frame (Field) Rates
Compliance Standard
RGB 4:4:4 10 bits 1080i 60, 59.94, 50 SMPTE 372M
(1920 x 1080)
1080p 30, 29.97, 25, 24, 23.98
1080PsF 30, 29.97, 25, 24, 23.98
12 bits 1080i 60, 59.94, 50
1080p 30, 29.97, 25, 24, 23.98
1080PsF 30, 29.97, 25, 24, 23.98
YCbCr 4:2:2 10 bits 1080p 60, 59.94, 50
12 bits 1080i 60, 59.94, 50
1080p 30, 29.97, 25, 24, 23.98
1080PsF 30, 29.97, 25, 24, 23.98
RGB 4:4:4 (2K) 12 bits 1080p 24, 23.98 (2048 x 1080)
1080PsF 24, 23.98


Environmental Conditions
Operating Temperature Range 0 to 40oC
Operating Humidity Range 85% RH or less (no condensation)
Optimal Temperature 10 to 30oC
Power Requirements
Voltage 10 to 18 VDC
Power Consumption 46W max.
Dimensions (excluding feet)
215mm (W) x 175mm (H) x 111mm (D)
8.46″ (W) x 6.89″ (H) x 4.37″ (D)
2.2 Kg
(1) Instruction Manual, (1) 15-pin D-sub connector (when LV5381-OP70 is installed), (1) 15-pin D-sub connector bar (when LV5381-OP70 is installed), (1) AC Adapter (SPU-63-105)

Input / Output Connectors

SDI Input
Input Connectors Four BNC connectors (channels A, B, C, and D)
Input Impedance 75Ω
Input Return Loss ≥ 15dB for 5MHz to the serial clock frequency
Maximum Input Voltage ± 2V (DC + peak AC)
SDI Output
Output Connectors Two BNC connectors
Output Signal SDI signal selected from channel A or B is reclocked and generated.
SDI signal selected from channel C or D is reclocked and generated.
Output Impedance 75Ω
Output Voltage 800 mVp-p ± 10%
Output Return Loss ≥ 15dB for 5MHz to the serial clock frequency
External Sync Input (*1)
Input Signal Tri-level Sync or NTSC/PAL Black Burst signal
Input Connectors Two BNC connectors
Input Impedance 15 kΩ passive loop-through
Input Return Loss ≥ 30dB for 50kHz to 30MHz into 75Ω
Maximum Input Voltage ± 5V (DC + peak AC)
Headphone Output
Output Signal Extracts and transmits the audio signal embedded in an SDI signal.
Output Channel Specified AES/EBU pair
Sampling Frequency Only 48kHz is supported
Output Connector One stereo miniature jack
Volume Adjustment Configured from the menu
Power Output 50 mW max. (with 16Ω load resistance)
*1: If the video signal waveform is displayed using an external sync signal as the reference, inserting or removing an SDI signal or restarting the device may cause the waveform phase to be off by one clock.  This feature does not function when the video format is 1080p/60, 59.94, or 50.

Control Connectors

USB Port
Specification USB 2.0
Media Only USB memory devices are supported.
Function Used to save screen captures, event logs, and preset data.
Remote Control Connector (when an OP70 is installed)
Function Used to recall presets, display tally indications, and switch input channels.
(Turning tally indication on and off and selecting the input channel cannot be performed at the same time).
Control Signal LV-TTL level (low active)
Control Connector 15-pin D-sub (female)
Recall Feature Eight presets (bits), 30 presets (binary)
Tally Indication Tally indication of four inputs
Input Channel Selection Switching between four inputs


LCD Panel Type 8.4-inch color TFT
Display Format XGA.  The effective resolution is 1024 x 768
Backlight Brightness 32 levels
Auto Shutoff LCD can be automatically turned off after a set period of time


  • Remote and Tally Option (LV5381-OP70, factory option)

    The addition of the external remote option enables the LV5381 to load presets and display tallies according to the signals that it receives through the rear-panel remote control connector. This makes it possible to link the LV5381 to a switcher or other device.

  • Dual Link Option (LV5381SER01)

    The addition of the dual link option enables the LV5381 to monitor a pair of dual link signals simultaneously.

  • Audio Lissajous Option (LV5381SER02)

    The addition of the audio lissajous option enables the LV5381 to display the lissajous curves and the numeric values of levels of the audio that is embedded in an SDI signal.

  • Status Option (LV5381SER03)

    The addition of the status option enables the LV5381 to show analysis displays such as the data dump, phase difference, and event log displays.

  • 3D Assist Option (LV5381SER04)

    3D video signals can be evaluated by applying the video signal for the left eye to channel A and the video signal for the right eye to channel B. The available picture display formats are anaglyph, convergence, overlay, and wipe.

  • S-LOG2 Option for LV5381 (LV5381-OPSLOG2)

    This is a very useful option to handle the S-LOG2 features available in some cameras.  If the image is under-exposed, turn on the LOW KEY filter to evaluate shadow details.  On the other hand, if the image is over-exposed, use the HIGH KEY filter to see the highlight details.  In addition, this option allows you to zoom in into the image without manipulating the focus from the camera.  It also allows you to look at the exposure levels through custom false color displays.  


  • LR 2751 I : Rackmount Adapter for LV5381 (not fixed, with tilt)
  • LC 2129 : Blank Panel for the LR 2751 I
  • LH 2140 : Handle for LV5381
  • SPU63-105 : AC Adapter for LV5381, LV5382


Leader Instruments Corporation warrants its products to be free from defects in materials and workmanship for a period of two years from the date of purchase.

Leader’s obligation under this warranty is limited to repairing or replacing, at its sole option, any such defective product. Product must be returned to a Leader Service Center with transportation charges prepaid and must be accompanied by a brief description of the problem encountered and date and place of purchase. This warranty does not apply to equipment, which has been damaged by accident, negligence, and misapplication, altered or modified in any way.





In addition, we offer extended warranty coverage for an additional year (3-year extended warranty) or three years (5-year extended warranty). For your peace of mind, we highly suggest considering any of these extended warranties as soon as possible (and before the end of the standard warranty period) because, in some cases, the cost to repair your instrument could be up to 50% of the original purchase value. If interested in any of these extended warranties, please contact your LEADER authorized representative or visit our Warranty Page for details and pricing (within 30 days of original purchase).

View Warranty Info


Damage caused due to negligence or accident is not covered by Leader’s Warranties. LCD Display, CRT and transformer parts costs are not covered by the Extended Warranty. There is no Extended Warranty available for accessories.