LDR-LV5700A

MULTI SDI MONITOR

The LV 5700A is a Multi SDI Monitor for HD/SD-SDI signals with an XGA TFT color LCD in an adjustable tilt front panel. The monitor tests 14 HD-SDI and SD-SDI formats with total digital processing compliant to SMPTE 259M, SMPTE 292M and SMPTE 296M. Input format, colorimetry and trilevel or black burst external reference inputs are automatically detected.

Extensive monitoring functions include waveform (YCbCr, YRGB, YGBR, RGB or GBR), vector (75% or 100% graticules), picture and surround sound monitoring modes. The first SDI module accepts two SDI inputs switchable from the front panel providing buffered SDI output(s) of the selected feed. Parade, overlay and timing modes facilitate characterization of component waveform levels and timing. Freeze mode allows comparisons of different SDI input signals. Multi-display operating modes include a thumbnail picture display.

Digital audio from HD/SD groups (1 & 2) or (3 & 4) are disembedded and output as four pairs of AES/EBU. Digital audio is also displayed as 3:1, 3:2, or 3:2:2 surround images, multi-lissajous and 8-Ch bargraphs. The peak bargraphs have selectable dynamic ranges as well as average ballistics. Remapping of the channel order allows users to create custom displays.
High Resolution decoded pix-monitor outputs may be set to feed monitor requirements as either YPbPr or GBR. Digital line-select, precision digital cursors, menu control of storage of 100 front-panel setups, flash card, USB and Ethernet round out the operating features. The HD/SD status screens list detection of input format, TRS, CRC checks for chroma and luma, video, audio ID, ancillary parity and check sum errors ... User adjustable alarm error thresholds are provided for digital component level ranges. Ethernet allows full remote control operation and monitoring of operating conditions including alarms. HD/SD eye pattern analysis with automatic measurements is an option. DC operation is also available as an option.

LDR-LV5700A PDF Data Sheet

LDR-LV5170D

Leader’s Full Rack HD/SDI Waveform/Vectorscope Monitor

Leader Instruments Corporation has introduced the LV 5170D a multiformat HD/SDI Waveform/Vectorscope Monitor with dual CRT’s. Operating features include the ability to handle 14 HDTV formats as well as optional D1 SDI and 480p analog. Format selection is automatic, with auto adoption of colorimetry to match the selected system. Detection and logging of video, audio, ancillary & color gamut errors plus selectable alarms ensure awareness of operating conditions. AES/EBU digital audio is disembedded from the signal being processed, and output as four pairs of digital audio for eight channels total. Finally, a readout in hex of all data points on any selected raster line is provided with the choice of manual line selection or line capture as the result of a detected TRS error.
Extensive monitoring functions include waveform (YCbCr or GBR), vector (choice of electronic or external graticule), picture and stereo monitoring. All observations are presented with the unbroken clarity that only instrument grade CRT displays can provide. Line-select, precision cursors, menu control of digital and analog setups and storage of ten front-panel setups round out operating features. The LV 5170D accepts two SDI inputs switchable from the front panel and provides a buffered SDI output from the feed selected. Input selection includes one 3-wire analog input. Decoded pix-monitor outputs may be set to either YPbPr or GBR.

Monitoring facilities include data capture that is triggered by selected line number or detected error and reads out hex data for the selected line and addresses. A reading of serial data signal level, given in terms of equivalent cable length from an ideal source, aids in evaluating SDI conditions. Of particular value is the error detection system that spots CRC errors in video (Y and C), audio and ANC data. The time of first error is shown along with total error count and time elapsed from the first error to facilitate BER determinations. White phosphor CRT is provided as standard.

Options include HD eye pattern or D1 SDI with 480p analog.

Availability is through Leader’s regional sales offices and nationwide distributor network.

LDR-LV5170D PDF Data Sheet

LDR-5152 Multiformat Waveform Monitor

• Analog Component Monitoring
• Multiple Formats:
• 1080/60i, 1080/50i, 1080/48i, 720/60p,
• 480/60p, 480/60i, 576/50p, 576/50i
• Two Sets (A&B) of 3-Wire Analog Inputs
• YPbPr and GBR Monitoring, Overlay and Parade
• Full Line Select for all Formats
• Timing (Bowtie) Measurements
• Precision Cursor Measurements for Level and Time/Frequency
• Ten Presets for Local and Remote Recall
• Stereo Phase/Amplitude Monitoring
• Conversion Matrix for YPbPr to GBR
• Y Formulation Complies with SMPTE 274M, RP-177


The LV 5152 provides waveform, vector and picture monitoring facilities for analog components in the major U.S. and European HDTV and EDTV systems that are considered of prime importance for production applications. Six U.S. systems and three European systems are covered and include 1080p, 1080i, 720p, 480p and 480i. The 1080/60i is provided in two flavors 1125/25 as per SMPTE 274M and as 1250/25 as per SMPTE 295M. The unit accepts two sets of 3-wire analog inputs with provision for external reference. Waveform display may be in YPbPr form or GBR with overlaid, parade and timing (bowtie) presentations. Extensive menu-selected operations offer wide-ranging control over operating parameters and includes line select and precision cursor measurements of level, time and frequency. The preset system stores ten front-panel settings for instant (and remote) recall, and a new on-screen display reduces preset recalls to a single keystroke. The vector display and the conversion matrix from YPbPr to GBR complies with Y formulation given in SMPTE 274M, 296M and RP-177. Other features include a stereo phase amplitude plot (Lissajous pattern), and 3-component picture monitor output.

LDR-5152 PDF data sheet

LDR-LV5152DA

HDTV Digital Waveform Monitor

• Multi-Format HDTV Waveform Monitor
• Digital and Analog Inputs
• 8-CH AES/EBU Digital Audio Outputs
• YPbPr or GBR Analog Pic Monitor Output
• External Reference for Analog and Digital Timing
• Digital Data Dump in Hex
• Extensive Error Logging and Custom Alarms
• System Matrices for 1080i/720p and 1035i
• RGB Gamut Error and p-p Readout of WFM Components
• Auto System Recognition and Setup with Display
• Selectable 16, 18, 20 or 24 Bit Audio Monitoring


Model LV 5152DA provides full monitoring facilities for 1080i/60 (59.94)/50, 1080p/30 (29.97)/25/24 (23.98)/24sF (23.98sF), 1035i/60 (59.94) and 720p/60 (59.94) systems. (A switchable matrix accommodates Y formulation for both 1035i and 1080i/720p systems.) The unit accepts two SDI inputs and provides a switched active output of the selected input. One set of analogcomponent inputs accepts YPbPr or GBR.Waveforms may be monitored in YCbCr or GBR form, in three-channel overlaid or parade display. Other display modes include Vector (with the choice of electronic or external illuminated graticule), timing (bowtie), picture and stereo (Lissajous).A decoded three wire picture monitor output may be set in either YPbPr or GBR. New features include the capture and readout of data for all data points in the raster in hex form for addressable lines and data addresses. In addition, a readout of SDI level in terms of equivalent cable length from an ideal source is provided. Of particular value is the ability to separate embedded digital audio with eight channels of AES/EBU digital output.A YCbCr conversion to GBR facilities gamut checks to spot illegal colors. Cursor measurements provide 0.5% accuracy. Extensive menu-selected operations give wide ranging control over operating parameters and include the line select (with numbering readout corresponding to the chosen system) and precision cursor measurements of level, time and frequency.The preset system stores ten front-panel settings for instant (and remote) recall, and a new on-screen display reduces preset recalls to a single key stroke. An advanced error reporting system, applicable to 1080i systems, records the time of the first detected error, time elapsed since the first error and the total error count in that period. Errors are detected in video (Y & C), embedded audio and ancillary data with provision for remote indication.A white phosphor CRT is standard.

LDR-5152 PDF data sheet

LDR-LV5100D Digital/
Analog Component Waveform Monitor

• Component Digital and Component/Composite Analog
• Eye Pattern (SDI Waveform), Model LV 5100DE Only
• EDH Facilities
• Digital Signal-Status Readout
• Hex Readout of All Data Samples
• User-Selected Alarms
• YCbCr or GBR Waveforms
• 3-Wire Analog Picture Out (YCbCr or GBR)
• Picture Display of Y or G
• Overlay, Parade and Timing Waveforms
• Component Vector Display
• X-Y Stereo Display
• Full Line Select with Strobe on Picture Display
• Preset/Recall of 10 Front Panel Setups
• Active Serial Output of Selected A or B Serial Input
• 4:2:2 Serial Digital Component
• Serial Data Signal Strength Reading in Terms of Equivalent Length of Coax Cable
• 525/60 and 625/50


Able to work in component digital as well as component analog facilities (and mixed operations) Models LV 5100D and LV 5100DE provide comprehensive waveform, vector, timing and picture monitoring capabilities. Menu-driven control functions extend familiar waveform observations into highly specialized areas and include local calibration control, the ability to show or blank SAV/EAV signals in both the waveform and picture, the ability to monitor digital signals in GBR or YCbCr form, line select (with an adjustable window),memory storage of test setups with the ability to provide on-screen labels, flexible cursor measurements, automatic 525/60 and 625/50 operation and much more. Model 5100DE adds an equivalent-time sampling technique to display the SDI waveform for analysis of amplitude, phase, frequency and jitter effects on the 270 Mb/sec data stream. Available timebases include 1 and 3 ns/div with 500 ps/div in MAG. Jitter filters of 10, 100 and 1000 Hz are provided and precision cursors facilitate measurements of amplitude, jitter, rise time and other factors.

DATA READOUT
Monitoring operations open into the digital domain with a touch of the front-panel DIGITAL key. This calls up a three- page status display, the first of which shows signal format and content in the vital areas of ANC data, embedded audio, the presence of EDH codes and the time at which an error was found. A very useful feature of this first status board is a reading of a serial data stream amplitude in terms of equivalent coax cable length from a standard source. This provides an easy-to-interpret indicator of the proximity of the digital "cliff." A second status board reads the status or error in TRS, SAV, EAV, ANC, APCRC, FFCRC and shows the presence of embedded audio and EDH flags. The third status board presents hex data for all 1716 data points on a line selected manually or triggered automatically by a TRS error.

LDR-LV5100D PDF Data Sheet

LDR-LV5100DE Digital/Analog Component Waveform Monitor

EDH Facilities

• 525/60 and 625/50
• User-Selected Alarms
• YCbCr or GBR Waveforms
• Eye Pattern (SDI Waveform)
• 4:2:2 Serial Digital Component
• Hex Readout of All Data Samples
• Digital Signal-Status Readout
• 3-Wire Analog Picture Out (YCbCr or GBR)
• Picture Display of Y or G
• Overlay, Parade and Timing Waveforms
• Component Vector Display
• X-Y Stereo Display
• Component Digital and Component/Composite Analog
• Active Serial Output of Selected A or B Serial Input
• Serial Data Signal Strength Reading in Terms of Equivalent Length of Coax Cable
• Full Line Select with Strobe on Picture Display
• Preset/Recall of 10 Front Panel Setups

Able to work in component digital as well as component analog facilities (and mixed operations) Model LV 5100DE provides comprehensive waveform, vector, timing and picture monitoring capabilities. Menu-driven control functions extend familiar waveform observations into highly specialized areas. Including local calibration control, the ability to show or blank SAV/EAV signals in both the waveform and picture. The ability to monitor digital signals in GBR or YCbCr form, line select (with an adjustable window), memory storage of test setups with the ability to provide on-screen labels, flexible cursor measurements, automatic 525/60 and 625/50 operation and much more. The LV 5100DE adds an equivalent-time sampling technique to display the SDI waveform for analysis of amplitude, phase, frequency and jitter effects on the 270 Mb/sec data stream. Available timebases include 1 and 3 ns/div with 500 ps/div in MAG. Jitter filters of 10, 100 and 1000 Hz are provided and precision cursors facilitate measurements of amplitude, jitter, rise time and other factors.

DATA READOUT
Monitoring operations open into the digital domain with a touch of the front-panel DIGITAL key. This calls up a three-page status display, the first of which shows signal format and content in the vital areas of ANC data, embedded audio, the presence of EDH codes and the time at which an error was found. A very useful feature of this first status board is a reading of serial data stream amplitude in terms of equivalent coax cable length from a standard source. This provides an easy-to-interpret indicator of the proximity of the digital "cliff". A second status board reads the status or error in TRS, SAV, EAV, ANC, APCRC, FFCRC and shows the presence of embedded audio and EDH flags. The third status board presents hex data for all 1716 data points on a line selected manually or triggered automatically by a TRS error. Rear panel facilities include an active serial output (selected A or B) and a 3-wire pix monitor output in GBR or YCbCr form (menu selected). Remote control and stereo audio monitoring are also accessed at rear panel connectors. The audio XY display includes an electronic graticule with programmable reference levels.

LDR-LV5100DE Click for PDF Data Sheet

5870 NTSC Waveform Monitor and
Vectorscope w/SCH

• Digital SCH Readout
• Simultaneous/Overlaid Displays
• Full Raster Line Select
• Line Select Presets
• Easy DG/DP Measurements
• Remote control
• Universal Power Supply (90-250 V ac, 48-440 Hz)
• DC Operation Standard (11-20 Vdc)

Combining the standard features of a waveform monitor and vectorscope in a single half-rack package. Model 5870 adds a number of powerful measuring advantages. Among these are the ability to overlay waveform and vector displays from two input signals for precise level, timing and phase matching. A x5 vertical gain multiplier, 200 ns/major division fastest time base and wide-range centering controls permit close inspection of all parts of the waveform for high resolution adjustments. The use of the decoded R-Y signal facilitates easy high-resolution measurements of differential phase and gain. Chroma and IRE filters may be inserted on a full-time or line-shared basis.

SCH
Model 5870 offers an on-screen digital readout of SCH in degrees of error referenced to the signal observed or an external reference for color framing checks.

LINE SELECT
Full raster line select is offered with lines chosen from Fields 1/3, 2/4 or ALL. Field and line numbers appear on screen and a strobe is added to PIX MON OUT signals to highlight the selected line(s). Full waveform and vector manipulation is available in the line-select mode. Memory storage of up to 9 resettable field/line numbers provides instant recall for routine tests. Provision is made for remote control including recall of line presets.

UNIVERSAL POWER
A switching mode power supply that accepts 90-250 V ac, 48-440 Hz to operate in any locality where ac power is available. In addition, dc power is standard and vehicle or battery power at 11-20 V dc is accepted. A battery mounting bracket, the LC-2222, is available for battery operation from a BP-90 type battery.

5870 PDF Data Sheet

5872A NTSC Waveform Monitor and
Vectorscope w/Line Select

• Simultaneous/Overlaid Displays
• Full Raster Line Select
• Line Select Presets
• Easy DG/DP Measurements
• Remote control
• Universal Power Supply (90-250 V ac, 48-440 Hz)
• DC Operation Standard (11-20 Vdc)

Combining the standard features of a waveform monitor and vectorscope in a single half-rack package. Model 5872A adds a number of powerful measuring advantages. Among these are the ability to overlay waveform and vector displays from two input signals for precise level, timing and phase matching. A x5 vertical gain multiplier, 200 ns/major division fastest time base and wide-range centering controls permit close inspection of all parts of the waveform for high resolution adjustments. The use of the decoded R-Y signal facilitates easy high-resolution measurements of differential phase and gain. Chroma and IRE filters may be inserted on a full-time or line-shared basis.

LINE SELECT
Full raster line select is offered with lines chosen from Fields 1/3, 2/4 or ALL. Field and line numbers appear on screen and a strobe is added to PIX MON OUT signals to highlight the selected line(s). Full waveform and vector manipulation is available in the line-select mode. Memory storage of up to 9 resettable field/line numbers provides instant recall for routine tests. Provision is made for remote control including recall of line presets.

UNIVERSAL POWER
A switching mode power supply that accepts 90-250 V ac, 48-440 Hz to operate in any locality where ac power is available. In addition, dc power is standard and vehicle or battery power at 11-20 V dc is accepted. A battery mounting bracket, the LC-2222, is available for battery operation from a BP-90 type battery.

LDR-LV5872A PDF Data Sheet

LDR5860V NTSC Waveform Monitor

• Two Channels Plus EXT REF
• 1H, 2H, 1V, 2V, Sweeps
• 1 µs/div Plus 2V MAG
• RGB Standard, YRGB Option
• FLAT, IRE, CHROMA and DIF’D STEP Filters
• (The Latter for Y Linearity Checks)V
• Picture Monitor Output
• Fits Half-Rack Adapter
• White Phospher CRT Standard

The standard workhorse of studio monitoring, the 5860V is ready to handle routine monitoring operations and offers extended operating options such as 1H and 1V sweeps for closer waveform inspection and a differential-step filter to facilitate luminance linearity checks using staircase signals. A DIF GAIN filter also sets up the monitor for differential gain measurements. The unit syncs to the selected A or B feed or accepts black burst or composite sync as an external reference. An output jack drives a picture monitor with the selected A or B video feed.

CRT
Accelerating Potential: 12 kV/2 kV
Area: 8 x 10 cm
Graticule: Internal with scale illumination

VERTICAL SECTION
Flat: 25 Hz to 3.6 MHz± 2% 3.6 MHz to 5 MHz +2 to -5% of response at 50 kHz
IRE: Based on response per IEEE Std. 205
Chroma: Response at 3.58 MHz bandpass filter± 2%/Flat
Differential Gain: Increased 3 to 5.5 times versus chroma
Differential Step: 400 kHz bandpass
Full Scale: 140 IRE (sync 40 IRE plus video 100 IRE)
Transient Response:± 2 IRE at 1V full scale,
Flat (using sin 2pulse and bar signal)
Tilt (Vertical Window): 2%
Deflection Accuracy:
1V full scale, 140 IRE units± 2%
4V full scale, 140 IRE units± 4%
Variable Range:
For 140 IRE-unit display
1V full scale, 0.25 V or less to 1V
4V full scale 1V or less to 4V
Maximum Input Voltage
± 5 V dc (1V, 4V full scale)
Input:
2 sets of loop-through jacks (A or B
switchable) on rear panel
Input Impedance:
1V full scale, 15 kW across 50 pF
4V full scale, 60 kW across 50 pF

VIDEO OUTPUT
Amplitude: 1V p-p rear panel for 140 IRE waveform Display
Frequency Response: 25 Hz to 5 MHz ± 5% Impedance 75 ohm 0%

HORIZONTAL SECTION
1H Sweep: Displays 1 line of video signal
2H Sweep: Displays 2 lines of video signal
1 µs/div Sweep: Expands 2-line display 10 times
1V Sweep: Displays 1 field of video signal
2V Sweep: Displays 2 fields of video signal
2V Mag Sweep: Expands 2 fields 20 times Linearity 3% or less
RGB/YRGB: RGB input is connected for standard;
YRGB input is optional
Staircase Input: 10 V± 15% for 9 div display
Maximum Staircase Input: 12 V p-p (ac plus dc)
Time Base: RGB (3 steps)/YRGB (4 steps)

Sweep Length
RGB: About 30% normal sweep
YRGB: About 22% normal sweep
Control Signal: 12 V to 15 V between pins 4 (pos) and 5 (neg)
RGB/YRGB Input
9 pin socket on rear panel

DC RESTORATION
Clamp time: back porch

CALIBRATOR
Frequency: 32 kHz Amplitude: 1V± 1%

EXTERNAL SYNC
Input
1 set of loop-through jacks on rear panel
Input Impedance
15 k Ohm

Input Sensitivity
143 mV to 5V
(Black burst - composite sync)
Maximum Input Voltage ± 8V

LINE SELECTOR
Displayed Lines 14-21 of first and
second fields

POWER REQUIREMENTS
100, 120, 220, 240 V ac ± 10%
50/60 Hz, 45 VA

PHYSICAL
Size (W x H x D): 8 1/2 x 5 1/4 x 16 7/8 in. / 215 x 132 x 428 mm
Weight: 14.3lbs, 6.5Kg
Operating Temperature: 0° to 40°C

SUPPLIED ACCESSORIES
protective Metal Cabinet with Handle & Feet 9 Pin Plug
5 Spare Illumination Lamps
2 Rackmount Screws (8-30 UNC)
Spare Fuse

AVAILABLE OPTIONS
YRGB Capability
Rack Mount Adapter (LR-2400VI)
Protective Front Cover (LC-2077)

LDR-LV5860 PDF Data Sheet

LDR-5850V NTSC Vectorscope

• Two Channels Plus EXT REF
• EXT REF Accepts Composite Video,
• Black Burst or CW Subcarrier
• Accepts Line-Select Strobe
• Electronic Scale Shows Error Limits
• No Parallax Error
• Fits Half Rack Adapter

The perfect mate for the Model 5860C Waveform Monitor, the 5850C Vectorscope extends monitoring and timing adjustments into chroma aspects. The unit accepts a phase reference from either input (A or B) or from an external reference. The latter may be composite video, black burst or CW subcarrier. A unique feature of the 5850C is an electronically-generated scale of coarse and fine error limits for either 75% or 100% color bars. These targets allow precise adjustments from relatively large viewing distances and eliminate the need for fussy centering adjustments. The illuminated internal graticule facilitates differential gain and phase measurements. An unblanking input jack on the rear panel accepts a strobe signal from waveform monitors equipped for line-select operation for vector display of selected lines. Electronically-generated graticule (scale) gives an across-the-room indication of vector error that is parallax free and immune to centering error.

LDR-5850V PDF data sheet

LDR-5222 NTSC / PAL / SECAM Waveform Monitor

• Handles NTSC, PAL and SECAM
• 8 Channels plus EXT REF
• Parade and Overlay Displays
• Picture Display (with Line-Select Strobe)
• Full Line Select with 525/60 and 625/50 Notation
• Menu Selected Setup
• Memory Storage of 10 Panel Setups
• Cursor Measurement of Level and Time (0.5%)
• Level Cursors Read in Volts, IRE, % and dB
• Dual Filter Display
• RGB and YRGB
• Y/C Monitoring
• X-Y Operation (Option)
• White Phosphor (Option)
• Universal Power Supply (90-250 V ac, 48-440 Hz)

A powerful component/composite waveform monitor, the 5222 handles 8 channels in A/B groups of 4 with the ability to overlay parades of 3 x 3 component signals. A picture display of the selected channel shows program material with a line-select strobe. The unit sets up automatically to 525/60 or 625/50 (or menu select) and a TIMING mode sets up bowtie observations. Full line selection is provided with line number notation applicable to NTSC or PAL and a 1-10 line window. Extensive operating options available under menu control include level and time/frequency cursors that read in volts, IRE units, % or dB and time/frequency units. Components are handled in GBR or YCbCr form. Calibration is menu controlled as well as DC restorer speed and sample point. Ten front panel setups can be stored and recall brings back all but power ON/OFF, INTEN, FOCUS and scale ILLUM.

LDR-5222 PDF Data Sheet

LDR-5212 NTSC / PAL / SECAM Vectorscope

• Handles both NTSC and PAL
• Overlay Display of 3 Channels Plus EXT REF
• Auto Burst Zeroing
• CRT Readout of DG/DP to 2 Decimal Places
• Storage/Recall of 10 Front Panel Setups
• Remote Control and Line Select (via 5222)
• X-Y Display for Stereo Monitoring
• Digital Phase Measurement
• Phase Accuracy Within 1-
• Universal Power Supply (90-250 Vac, 48-440 Hz)

Operating automatically in NTSC or PAL, the 5212 overlays vector displays for 4 signals (3 input channels plus an external reference.) A touch on AUTO PHASE automatically zeros burst to the -B-Y (-U) axis using the reference chosen from any channel or an external reference. Digital phase readout makes it easy to measure precise phase differences between channels. Of particular value is semi-automatic setup for high-resolution measurements of differential phase and gain.

Other features include menu selected calibration for signals with or without setup and for 75% or 100% color bars. A +V key inverts -V signals for a less cluttered PAL display. Up to 10 front panel setups may be stored for instant recall and remote control with line select strobe is provided via connection to a 5222 waveform monitor. X-Y operation for stereo monitoring is standard and is accessed at a rear panel connector.

LDR-5212 PDF data sheet

LDR-LV5836B Surround Sound Monitor

• 6-Channel AES/EBU Digital Inputs
• Includes Level Display for Sub Woofer Channel
• Stereo Bargraph Level or Phase Display
• Display of L-C-R Surround (3-1) or L-C-R-Ls-Rs (3-2)
• 5-Channel Analog Balanced/Unbalanced Inputs
• Interchannel Lissajous Displays Spots Polarity Errors at a Glance
• Auto Spot Killer
• Precision Display of Sound Image Aids in Mixing and Mic Placement

Model LV 5836B is capable of displaying a precise sound image that visually matches the human aural perception of sound directivity in surround-sound systems. Developed in collaboration with NHK, the Japanese National Broadcasting Company, the digital processor works out phase and amplitude aspects to display the sound image. Both L-Ctr-R-S (3-1) and L-Ctr-R-LS-RS (3-2) are accommodated as well as the 5.1 Dolby system. The unit accepts the latter in the form of 6-channel AES/EBU digital audio. A separate on-screen level indicator is employed for the low frequency woofer (0.1) channel. In addition to the sound image, dedicated bargraph level indicators are provided. And six multi-Lissajous displays are available to show phase and polarity between pairs in the five channel group, this to spot polarity inversion in signal feeds at a glance. The unit accepts six channels of AES/EBU digital audio as well as five channels of analog audio in both balanced and unbalanced form. Peak or average response may be chosen, and an auto gain feature ensures optimum display. But fixed reference levels are menu selectable for both digital and analog inputs. A spot killer protects the CRT from extended no-signal operation.

LDR-LV5836B PDF data sheet

LDR-5835 Stereo Audio Monitor

• Lissajous Display of L and R Signals
• Choice of L/R or L+R/I-R Plot
• Auto Phase Reversal Alarm
• Remote Alarm
• Spot Killer Protects CRT
• Fits Standard Half-Rack Adapter

Stereo-audio operations require tight control of relative L and R amplitude and phase to ensure correct directional response for stereo listeners and to prevent serious degradation of the L component for monaural listeners. Model 5835 provides the means to monitor stereo signals with an X-Y plot that shows both amplitudes and relative phase of L and R signals (a Lissajous pattern). Further, an automatic alarm is triggered if a serious phase error, as might be caused by a polarity inversion in either stereo feed, results in a significant L-R component for more than five seconds. The warning appears on a front-panel LED and can be rigged for a remote alarm. The 5835 mounts in a standard half-rack adapter to take its place in studio or transmitter monitoring operations. Two interchangeable graticules are provided to allow the 5835 to be set up for the standard of L versus R plot or the newer plot of L versus L-R. The change is effected by internal jumper connections. Both balanced (XLR) and single-ended (phono-type connector) inputs are provided. A -20 dB, 0 dB, dB range switch includes a CAL setting and is augmented with a VARIABLE control.

LDR-5835 PDF data sheet