Since the company's inception in 1987, Wohler Technologies' video products division, PANORAMAdtv, continues to be a world leader in providing in-rack audio and video monitoring solutions for the broadcast, motion picture, and professional audio/visual markets. The San Francisco Bay Area-based company offers a comprehensive range of products that simplify analog and digital source monitoring in facilities of all sizes and complexity. More information is available at www.wohler.com.
Wohler Products at BroadcastAsia2008
Video Products and Solutions:
Touch it™ Digital Multichannel Video Monitor and Controller
A recent addition to Wohler's award-winning Touch-it™ product line, the Touch-it Digital combines side-by-side 7-inch high-resolution color LCDs in just 3RU to enable convenient and cost-effective real-time monitoring and routing of up to 16 channels of multirate SDI video. The Touch-it Digital's left LCD is a touch screen that displays from four to 16 thumbnail images, which automatically scale to fill the screen. When one of these images is touched, the corresponding video source appears on the right LCD monitor at full size, in either a 4:3 or 16:9 aspect ratio, and its HD/SD-SDI source signal is sent to an unbalanced output and to a VGA output for monitoring on an external display. The Touch-it Digital accepts and switches eight standard SD-SDI video inputs, passing along any embedded audio, and features two multirate SDI and two DVI outputs. Its GPI output can be associated with any touch screen action, in addition to GPI input, for a variety of user-defined functions.
Touch-it™ Plus Multichannel Audio/Video Monitor
The Touch-it™ Plus multichannel audio/video color monitor offers simple, convenient monitoring of multichannel CVBS (composite) analog video and audio and provides route switching in a compact 3RU design incorporating dual 7-inch high-resolution color LCD panels. The unit supports video confidence monitoring for up to 12 channels of composite video. The left monitor displays 12 1.8-inch thumbnail images, and when one of these is touched, that image appears on right screen at full size and its signal is sent to a video output BNC connector for monitoring on an external display. The Touch-it Plus also features audio monitoring of 12 stereo analog audio inputs on DB-25 connectors, left and right internal speakers, and routing functions, and the monitored audio follows the selected video output on XLR connectors. Audio line out logic, attenuation, and volume pre/post selection all are user-adjustable.
HDMon Family of High Definition Monitors
Wohler's family of high definition color video monitor displays, the HDMon series, enables high-quality monitoring of digital HD-SDI, SD-SDI, or DVI signals; analog composite, component, and RGBHV video; and CGI images up to WUXGA resolution. Though the HDMon series is designed primarily for 1080-line HD applications, each monitor provides exceptional noise reduction, motion interpolation, and motion-adaptive processing to ensure crisp, clear display of images, regardless of their native resolution.
Current HDMon models include the HDMon-170, HDMon-92WS, HDMon-90, HDMon-260, and HDMon-240. Operating either as a desktop monitor or installed in a 19-inch-wide rack, these LCD displays offer HD resolution, a choice of 4:3 or 16:9 aspect ratios, user-adjustable scaling, and up to 170 degrees of perfect off-axis viewing without the image and color distortions normally associated with LCD displays. A sleek, lightweight design allows HDMon displays to convert from portable to tabletop solutions without the need for additional hardware. Built-in 100Base T Ethernet and RS232 connections allow the monitors to be configured and controlled remotely via a Windows®-based GUI or by third-party control systems.
MON4-2W/HR Multiple High-Resolution Display Monitors
The MON4-2W/HR high-resolution display monitor features four 4.3-inch wide-format LCD panels, each of which features dedicated recessed controls for contrast and brightness, native 16:9 aspect ratio, and selection between16:9 and 4:3 aspect ratios for SD-SDI signals, as well as tally indicators and independent power and input termination switches. The monitor automatically detects and accommodates NTSC and PAL video formats. Each LCD is mounted in a cylinder and thus may be rotated approximately ±30 degrees in the vertical plane for optimum operator viewing angles. The monitor's rear panel features four SDI inputs and four SDI outputs (buffered and equalized) on BNC connectors and a green LED indicating the lock status of the attached HD/SD-SDI source signals. A DB-25 connector on the rear panel can be interfaced to most tally systems.
MON8-1 Analog Video Monitor
The MON8-1 eight-channel color video monitor incorporates eight backlit 1.8-inch LCD displays in 1RU. Each LCD has a 4:3 aspect ratio and can automatically detect and properly display NTSC or PAL digital video signals. The unit features eight CVBS video inputs and eight CVBS loop-through outputs, all on BNC connectors. The MON8-1 provides both weight and power savings, weighing just 3.5 pounds and featuring an internal power supply with extremely low power requirements.
MON2-3W Dual-Standard Widescreen Monitor
The 3RU MON2-3W features dual 7-inch color video LCDs in a high-quality LCD chassis that offers adjustable viewing angles for efficient operator viewing. Each screen displays at either a 16:9 or 4:3 aspect ratio with front-panel selection. The standard MON2-3W system is equipped with two composite video inputs (NTSC and PAL autosensing). Each BNC composite video input has a passive loop-through and a 75-ohm termination switch.
VAMP2-MDA Audio/Video Monitoring System
The VAMP2-MDA system provides high-quality audio and SD/SDI or HD-SDI video monitoring in only 2RU of space, serving as an ideal solution for multichannel monitoring in VTR bays, mobile production vehicles, teleconferencing installations, multimedia systems, satellite links, cable TV facilities, and on-air radio studios. The unit's built-in 4-inch LCD screen enables confidence monitoring of video from either the SDI input or composite analog video inputs, and a composite video monitor output from the selected HD-SDI/SD-SDI source enables use of the VAMP2-MDA with larger external video monitors. The analog audio section features four channels and level meters. In addition to enabling independent analysis of any of the four channels, the VAMP2-MDA is a useful tool for converting and demuxing digital signals.
Audio Products and Solutions
The Wohler Plus line of audio products represents state-of-the-art processing and monitoring tailored to the needs of digital broadcasting, whether for terrestrial broadcasting, video over IP, cable, or satellite. The innovative system offers a radical new approach to processing and monitoring, providing a variety of DSP options so that each unit can be configured for the specific functions required by a facility. This flexibility eliminates the need for all-or-nothing boxes, helping broadcasters to lower operational costs. The modular system features flexible inputs (16 channels or 8 AES pairs) and outputs, alarms, monitoring, and metering, along with multiple channel synchronizing and shuffling of channels for 5.1 or 7.1 signal confidence. Optional inputs include AES and multirate serial digital embedded audio with Dolby® encoding. The 2RU Wohler Plus features a high-resolution TFT screen and on-board menu system for control, as well as Ethernet, RS-232, and GPIO interfaces.
AMP2-S8MDA Audio Monitoring System
The AMP2-S8MDA is a complete audio monitoring system offering premium-quality 8-channel analog, AES/EBU, HD-SDI, and SD-SDI digital multichannel audio monitoring and conversion, as well as professional level metering in a compact 2RU cabinet. This unit contains three audiophile-quality drivers and three power amplifiers; two speakers and amplifiers reproduce midrange and high frequency information in stereo, while the third amp/driver combination handles summed LF information below the 500 Hz crossover point. The AMP2-S8MDA features eight 53 segment high-resolution tricolor LED level meters showing simultaneous VU and PPM for superior level metering. The front panel features an innovative LCD display of phase/polarity relationships. A unique design provides optimally focused sound for operators in an ultra-near field (1 to 3 feet) working environment and offers performance comparable to that of many separate monitor pairs, yet does so without the installation hassles, awkward speaker placements and "added-on" look.
AMP2-E8MDA Multiformat Audio Monitor
The AMP2-E8MDA multiformat audio monitor processes and monitors up to eight channels from a Dolby® E or AC-3 (Dolby Digital) bit stream, an HD-SDI or SD-SDI bit stream, two sets of four AES/EBU signal pairs (balanced and unbalanced), or eight balanced analog channels. The audio amplifier section features five high-performance transducers driven by three power amplifiers. Eight high-resolution, 53-segment tricolor LED bar graph audio-level meters provide instant and accurate level monitoring at a glance. A convenient high-contrast LCD display on the front panel shows the user settings and status, type of signal, channel selection, mute status, and phase/correlation. The unique acoustic design of the AMP2-E8MDA provides optimally focused sound in an ultra-near-field environment, which gives the operator a higher sound pressure level while reducing overall ambient sound and adjacent bay crosstalk. The compact 2RU monitor installs into an industry-standard 19-inch-wide rack.
VMMDA-1 "Confidence Plus" Audio Monitor
The 1RU VMMDA-1 from Wohler provides stereo monitoring with fidelity exceeding that of ordinary monitors in a similar rack size. Intended for confidence monitoring for HD-SDI, SD-SDI, digital, and analog stereo audio, the unit offers selectable monitoring of either two HD-SDI or SD-SDI channels and either one stereo analog or one AES/EBU digital audio source with outstanding full-range fidelity. Two front-firing midrange-tweeter speakers and a compact high-performance woofer are arranged in Wohler Technologies' popular bi-amp design. Electronic rather than acoustic cancellation of bass frequencies provides positive audible detection of out-of-phase (reversed polarity) audio feeds, and fast and averaging "phase" LEDs give a visual alert of out-of-phase conditions. The VMMDA-1 features two 10-segment VU LED bar graph level meters. An analog output of the selected SDI, analog, or digital stereo source is provided on the rear panel. A three-way toggle switch selects among analog or digital inputs. An auxiliary analog output of the selected analog or digital source is provided on the rear panel.
Other Products and Solutions
Touchstone 3G Portable Signal Test Generator
Wohler's Touchstone 3G handheld test signal generator for digital video and audio is a palm-sized, battery-operated device that serves a growing market need for flexible testing of signals, including 3Gb/s serial digital signals. The award-winning Touchstone unit can generate dozens of 10-bit quantized test signals, providing programmed tones for up to eight stereo pairs of embedded audio channels and user-programmed motion-zone plates for virtually any video format (4:4:4 HD, 1080-50/60p, and 2k/4k). A USB connection to a PC or laptop enables convenient control, software updating, or uploading of user-generated test signals or images while an integrated high-resolution LCD/TFT screen supports the system's menu-driven user interface and provides instant confidence in the selected signal.
LM26-24 Audio-Level Metering Unit
The LM26-24 audio-level metering unit is a 1RU 26-segment model supporting 2 to 32 channels. The analog metering unit features input connector impedances of 27K ohm, balanced, that may be adjusted for reference-level gain via a rear-panel DIP switch. Input impedances for digital metering units are 110 ohm, balanced, for XLR and Phoenix connectors and 75 ohm, unbalanced, for BNC connectors. The LM Series' standard display mode is set as a single-segment PPM dot above a VU bar; each segment's color is fixed according to its position on the scale. Each bar graph meter section (pair) may be individually adjusted for parameters including display mode, peak hold, PPM ballistics, alternate scales, phase correlation, and optional auto line-level calibration.
LM106-6 AC-3 Ultra-High-Resolution Level Monitor
The six-channel LM106-6 in-rack professional level metering system features 106-segment tricolor bar graphs to deliver extremely high resolution and an industry-leading dynamic range up to 70dB in increments as small as 1/2dB across mid-scale. In just 1RU the system decodes and monitors encoded Dolby® Digital (AC-3) audio and also supports monitoring of AES/EBU digital and PCM audio to allow for simultaneous visual monitoring of all channels. Wohler's unique tricolor LED design enables a virtually unlimited variety of metering options including phase correlation, peak hold, loudness, sum and difference, and alternate scales and color mappings.
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