VTM-200 Television Signal Monitors Installation and Operation Handbook TWO-YEAR LIMITED WARRANTY Videotek, Inc. warrants that this product is free from defects in materials and workmanship for a period of two years from the date of purchase, except for CRTs and LCDs, which are warranted for a period of one year. During this warranty period, Videotek will, at its option, repair or replace defective products at no charge for the parts or labor. Batteries are not covered in the warranty.
VIDEOTEK SOFTWARE LICENSE AND WARRANTY The software which accompanies this license (the "Software") is the property of Videotek or its licensors and is protected by copyright law. While Videotek continues to own the Software, you will have certain rights to use the Software after your acceptance of this license. Except as may be modified by a license addendum which accompanies this license, your rights and obligations with respect to the use of this Software are as follows: • • You may: i.
OPERATOR'S SAFETY SUMMARY CAUTION — these instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform this installation or any servicing unless you are qualified to do so. Refer all servicing to qualified service personnel. To ensure safety: • The unit should not be exposed to dripping or splashing, and no objects filled with liquids, such as vases, shall be placed on the unit.
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Contents Section 1 ♦ Introduction Section 2 ♦ Installation Inspecting the Shipment ....................................................................................................... 2-1 Installing the VTM-200 .......................................................................................................... 2-1 COM Port Electrical Interface Selection .......................................................................... 2-2 Interface Mode Jumper Configurations ...............................
Contents Section 4 ♦ Troubleshooting Cold Starting the VTM-200 ................................................................................................... 4-1 Problems, Causes, and Solutions......................................................................................... 4-2 Appendix A ♦ Specifications General ................................................................................................................................. A-1 Inputs .........................................
Contents Figures Figure 1-1. VTM-200 Front and Back Panels ........................................................................... 1-2 Figure 2-1. Mounting the VTM-200 in Rack.............................................................................. 2-3 Figure 2-2. VTM-200 Back Panel Connectors.......................................................................... 2-4 Figure 2-3. Connecting the RCU-200 Remote Control Panel .................................................. 2-6 Figure 3-1.
Contents Table 3-7. Error Indicators (only visible for serial digital inputs)............................................. 3-21 Table 3-8. Keyboard Commands............................................................................................ 3-23 Table 4-1. VTM-200: Problems, Causes, and Solutions .......................................................... 4-2 Table C-1. VGA OUT Connector Pinouts.................................................................................C-1 Table C-2.
Section 1 ♦ Introduction The VTM-2001 is a 19” rackmounted unit that accepts two NTSC or PAL composite video signals, two component serial digital inputs (per ITU-R BT.601 and SMPTE 259M @ 270 Mb/s) at either 50 Hz or 59.94 Hz field rates, and an external analog reference video signal. In addition, the VTM-200 optionally accepts four analog audio stereo pairs, and four AES/EBU standard serial digital stereo pairs.
Introduction Figure 1-1. VTM-200 Front and Back Panels For information on the RCU-200, see Appendix D, “Remote Control Unit (RCU-200).
Section 2 ♦ Installation This section provides information about inspecting the VTM-200 shipment and installing the unit. Inspecting the Shipment Before installing the VTM-200, inspect the box and its contents. Report any damage to the shipper and telephone Videotek’s Customer Service Department for service support (see Appendix B, “Service Support”).
Installation COM Port Electrical Interface Selection CAUTION — these instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform this installation or any servicing unless you are qualified to do so. Refer all servicing to qualified service personnel. The COM interface on the VTM-200 as well as the Remote Control Unit (RCU-200) normally uses an EIA-232 electrical interface for communications.
Installation Rackmounting the VTM-200 Rackmount the VTM-200 with the enclosed rackmounting support rails. The ideal situation would leave one rack unit (1.75") above and below the VTM-200 open. When selecting the permanent mounting location for the VTM-200, ensure that the flow of air to the ventilation holes on the top and sides of the chassis is not obstructed. Rackmounting of the VTM-200 is illustrated in Figure 2-1; the parts required to rackmount the VTM-200 are listed in Table 2-2. Figure 2-1.
Installation Connecting the VTM-200 The back panel connectors are illustrated in Figure 2-2; the function of each connector is described in Table 2-3. Figure 2-2. VTM-200 Back Panel Connectors Table 2-3.
Installation Table 2-3. Description of Back Panel Connectors (continued) Key Label Description VGA (OUTPUTS) Female, 15-pin, “D” connector that provides the analog RGB signals and the vertical and horizontal sync signals necessary to operate a standard SVGA monitor at 800 x 600 resolution.* COM (CONTROL) Female, 9-pin, “D” connector that allows RS-232/RS-422 communication with the RCU-200 or the PC.
Installation Configuring the VTM-200 for Remote Control For the following configuration, the interconnecting cables can be extended using electronic distribution. To configure the VTM-200 for remote control: ♣• One RCU-200 connected to one VTM-200 using the COM port Figure 2-3.
Section 3 ♦ Operation The VTM-200 provides a rasterized output picture/waveform/vector/audio display on an SVGA monitor with an on-screen menu system for operator setup of the unit. The front panel controls allow for selection of inputs, filters, display parameters, and display formats. Front Panel Controls and Indicators The front panel controls and indicators are illustrated in Figure 3-1; the function of each control or indicator is described in Table 3-1. Figure 3-1.
Operation Table 3-1. Description of Front Panel Controls and Indicators (continued) Key Label Description SWEEP Press to cycle the waveform between 1H (one horizontal line of video), 2H (two successive lines of video), 1V (one vertical field of video), or 2V (two successive fields of video). 1H, 2H, 1V, 2V LED lights to indicate which SWEEP is currently in operation. H.
Operation Table 3-1. Description of Front Panel Controls and Indicators (continued) Key 21 Label Description WAVEFORM (ZOOM) This button has a dual purpose: Press to cycle through the composite waveform display between its normal display of -50 to 120 IRE levels, a display zoomed around a center value of 0 IRE ± 20 IRE, and a display zoomed around a center value of 100 IRE ± 20 IRE. The PAL waveform, when displayed as volts, cycles between -0.1 to +0.7 volts, 0 ± 0.1 volts, and + 0.7 ± 0.1 volts.
Operation Making Digital Video Measurements with the VTM-200 The VTM-200 monitors analog NTSC/PAL composite and serial component digital video. Video adhering to the ITU-R BT.601/SMPTE 259 standards consists of three component channels multiplexed into a single data stream. The three components are luminance (or "Y") and two color difference signals (CB and CR). The color difference signals are similar to the more familiar analog color difference components B-Y and R-Y.
Operation GENERAL CHARACTERISTICS OF SERIAL COMPONENT SIGNALS • Serial data rate: 270 Mb/s • Serial digital signal amplitude: 800 mV p-p (Note: not video signal amplitudes) • 1440 data words in active video • 276 data words in horizontal blanking (525 line system) • 288 data words in horizontal blanking (625 line system) • Serial transmission uses 10-bit words but 8-bit words are allowed (lower two bits set to logical 0) SUPER VGA (SVGA) Display Figure 3-2 illustrates a four-quadrant display of
Operation Figure 3-2. Sample SVGA display Waveform, Vector, and Audio Graticule Scales Waveform Graticule Scales The waveform graticule scales change according to the video format being displayed, as listed in Table 3-2. Table 3-2.
Operation Figure 3-3. Full-Screen Waveform Graticule Figure 3-4 shows an unzoomed, full-screen vector display graticule with no signal displayed. INPUT A has been selected, and the REF is internal. The signal standard is NTSC. The STATUS is not ON AIR, and the SOURCE ID has been set to read INPUT A. The SC/H phase is measured to be 0°. Red, Magenta, Yellow, Blue, Green, and Cyan are targets for a color bar test pattern and the horizontally indicated area in which the back porch color burst should fall.
Operation Figure 3-5. Unzoomed Full-Screen Audio Display Figure 3-6 illustrates a four-quadrant display with no video signal present, and the (non-audio) SETUP menu displayed as a result of the front panel SETUP button having been pressed. The menu item displayed is Waveform Color, and the currently selected value for that item is Green. On-screen instructions indicate “Choose an item with the H Pos knob. Change its value with the V Pos knob.
Operation Figure 3-7 illustrates a four-quadrant display with no video signal present, and the (audio) SETUP menu displayed as a result of the front panel SETUP button having been pressed, followed by a press of the AUDIO ZOOM button. The menu area overwrites the vector display area. The selected menu item is Analog Audio Scale, and the selected item value is Type I (+8 dBm).
Operation Figure 3-9 is similar to Figure 3-8, except that the waveform graticule has been zoomed to the region around 100 IRE, and the vector display has been zoomed to its lower right quadrant. Figure 3-9. Four-Quadrant Display with Lower Right Vector Figure 3-10 is similar to Figure 3-8 and Figure 3-9, except that the waveform graticule is unzoomed, and the vector area has been zoomed to its center. Figure 3-10.
Operation Figure 3-11.
Operation Vector Graticule Scales The vector graticule scales also change according to the video format being displayed; these scales are illustrated in Figure 3-12 and Figure 3-13. Figure 3-12. NTSC Vector Graticule Figure 3-13.
Operation Audio Ballistics The audio display is an option. The audio levels are represented by bar graph level meters with characteristics selectable to be either IEC Type I, IEC Type IIa, IEC Type IIb, Type I +8, or Nordic for both analog and digital inputs; for digital inputs only, the dBfs scale is selectable. The IEC types are according to IEC-268-10 and -17 specifications.
Operation Factory-Default Settings When the VTM-200 is powered on for the first time, it assumes the factory-default settings. These default settings are listed in Table 3-3. Table 3-3. Default Settings Key Menu Item Default Value 1 Waveform Color Lt.
Operation Video Inputs The VTM-200 accepts two video formats: composite and serial digital. Selecting Video Inputs Press INPUT next to the A, B, C, or D. Pressing the INPUT button will cycle through a four-quadrant display: • Full-screen display of the processing picture • Full-screen waveform display • Full-screen vector display • (OPT-1 Option) Full-screen audio level display NOTE: The video is in Parade mode. To change to Overlay mode, use the SETUP MENU.
Operation AUDIO, VECTOR, and WAVEFORM ZOOM Buttons There are three ZOOM buttons: WAVEFORM, VECTOR, and AUDIO. The following subsections explain their use. Expanding the Audio Display NOTE: This button is only active when the OPT-1 option is installed. Press AUDIO ZOOM to select one of the display options: • Expand the audio scales around the 0 dB reference point and enable increased resolution of readings. • Select items in the SETUP menu that are only concerned with audio.
Operation Navigating the SETUP MENU Press SETUP/LEARN to display or exit the SETUP MENU. Use the following knobs to navigate and select values on the SETUP MENU: • WAVEFORM POSITION-H − Rotate the knob left or right to move the menu cursor or to change a value or condition in a menu. − Stop knob at desired item. • WAVEFORM POSITION-V − Rotate the knob to change a selected value or move a graticule cursor line. − Stop knob at the desired value. Enter the Setup mode to display the SETUP MENU.
Operation Table 3-5.
Operation Table 3-5 SETUP Menu (continued) Menu Item AES/EBU AUDIO SCALE SUM/DIFFERENCE Item Values Type I (-18, -20, or –22 dBfs) Type I +8 (-18, -20, or -22 dBfs) L1/R1/L2/R2 Type IIa (-18, -20, or -22 dBfs) Nordic (-18, -20, or -22 dBfs) L1/R1/M1/S1 Type Iib (-18, -20, or -22 dBfs) dBfs (-9, -18, -20, or -22 dBfs) L2/R2/M2/S2 M1/S1/M2/S2 Display Colors Menu Black Blue Green Cyan Red Purple Brown LT Gray DK Gray LT Blue LT Green LT Cyan LT Red LT Purple Yellow White NOTE: LT=Light and DK=Dark VT
Operation Calibration Pulse Checking on the accuracy of the waveform graticule and the vertical gain of the VTM-200 circuits that process composite waveforms, a calibration pulse is selected for display in lieu of the normal composite waveform. The SETUP menu item CAL has as the values ON and OFF. If CAL pulse is selected, a squarewave several cycles in duration will be displayed.
Operation Table 3-6. Status Indicators Indicator Background color ON AIR clear – off the air SOURCE ID 2 lines of text, 6 characters per line, entered from the keyboard at the user's option red – on the air Table 3-7.
Operation 10. To cycle the waveform from normal to the zoomed displays around 0 IRE and 100 IRE, press WAVEFORM. 11. To change a user-settable parameter, press SETUP to display the on-screen menu selections. (See the VTM-200 SETUP MENU table in this manual for a listing of all possible menu items and their values). 12. To show just one selectable line of video on the waveform and vector displays, press the LINE SELECT button. 13.
Operation Using the Keyboard Commands Table 3-8 lists the keyboard commands used for remote operation of a single VTM-200 or multiple VTM-200 units. This table continues on the next page. Table 3-8.
Operation Table 3-8 Keyboard Commands (continued) Function Keystroke Description Display F1 Toggles between combo + menu and the prior mode Display F2 Full screen picture Display F3 Full screen waveform Display F4 Full screen vector Display F5 Full screen Audio Display F6 Quarter screen combination Source ID F10 Toggle source ID edit mode in which a cursor appears in the Source ID box. The cursor is a non-blinking underline.
Section 4 ♦ Troubleshooting CAUTION — these instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform this installation or any servicing unless you are qualified to do so. Refer all servicing to qualified service personnel. If the VTM-200 is not functioning properly, first verify that: 1. The VTM-200 is connected to a power source (90–264 VAC, 50/60 Hz nominal). 2. All cables are correctly connected (see Section 2, “Installation”).
Troubleshooting Problems, Causes, and Solutions Table 4-1. VTM-200: Problems, Causes, and Solutions Problem/Symptom Possible Cause No video visible on SVGA monitor. Output of VTM-200 not connected to SVGA 19 monitor. SVGA monitor cannot lock to VTM-200 output. Cable from VTM-200 to monitor not connected properly. SVGA monitor has no power applied. Monitor not capable of 800 x 600 resolution or proper combination of horizontal and vertical rates. Incorrect serial digital format being applied.
Appendix A ♦ Specifications General STANDARDS ITU-R BT.601 SMPTE 259M @ 270 Mb/s Digital Inputs 50 Hz and 60 Hz field rates Analog Inputs NTSC/PAL (auto detect or user lockable). MONITOR REQUIREMENTS Non-interlaced super VGA (SVGA) multisync monitor capable of 800 x 600 and 640 x 480 displays at a vertical rate of both 50 Hz and 59.94 Hz. (See OUTPUTS for additional requirements.) Composite video output for NTSC and PAL is an option.
Specifications GENERAL (continued) CHROMA FILTER RESPONSE Within 3% of flat @ 3.58 MHz and 4.43 MHz. SUBCARRIER PULL-IN RANGE ± 50 Hz of nominal Fsc WAVEFORM GAIN x1 and x2.5 TRANSIENT RESPONSE Preshoot and/or overshoot < 2% VECTOR ACCURACY ± 1° VECTOR PHASE CONTROL > 360°, continuously variable SC/H PHASE MEASUREMENT ACCURACY ± 5° @ SC/H 0° ALARMS For digital inputs, an on-screen indication is given if any of the following errors occur: EDH error, gamut error, and data error.
Specifications Inputs (continued) DIGITAL VIDEO INPUT LEVEL 800 mV p-p ± 10% DIGITAL VIDEO INPUT RETURN LOSS ≥ 18 dB, 5–270 MHz Four balanced analog stereo pairs may be applied at two push-on, mating connectors. Nominal levels of 0, +4, +6, +8 and +12 dBm (user selectable). AUDIO (optional) Four single-ended AES/EBU digital audio stereo pairs on four 75Ω BNC inputs. Nominal levels of -18, -20, and -22 dBfs (user selectable). AUDIO INPUT IMPEDANCE Analog inputs: 20 KΩ. Digital inputs: 75Ω.
Specifications Outputs (continued) AUDIO Two analog stereo pairs (L1, R1; L2, R2), user selectable from among the audio input pairs, are available at a push-on, mating connector (with audio option installed). AUDIO OUTPUT SIGNAL LEVEL +4 dBm (600Ω balanced) ± 1 dB for any situation where the input level is equal to the selected reference level, except for the selection of the dBfs scale.
Specifications Environmental OPERATING TEMPERATURE 0° to +50°C STORAGE TEMPERATURE -40° to +65°C HUMIDITY 0 to 90% non-condensing Operating to 10,000 feet (3,050 meters) ALTITUDE Non-operating to 50,000 feet (15,240 meters) TRANSPORTATION 24 inch (9.5 cm) impact drop survivable in original factory packaging. Mechanical DIMENSIONS WEIGHT Height: 1.75" (4.45 cm) Width: 19.0" (48.26 cm) Depth: 19.75" (47.60 cm) 15.6 lbs (7.
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Appendix B ♦ Service Support For service support, telephone our Customer Service Department at 610-327-2292. If the problem cannot be resolved over the telephone and the instrument must be shipped to Videotek for service or repair: • Obtain a Return Authorization (RA) number.
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Appendix C ♦ Pinouts Figure C-1. VGA OUT 15-pin Female Connector Table C-1.
Pinouts Figure C-2. RS-232/RS-422 COMM 9-pin Female Connector Table C-2.
Pinouts Figure C-4. Keyboard 9 Pin Female Connector Table C-4.
Pinouts Figure C-5. Audio IN A and B Connector Figure C-6. Audio OUT Connector Table C-5.
Appendix D ♦ Remote Control Unit (RCU-200) The RCU-200 remote control unit enables remote control operation of the VTM-200 or VTM-200L (VTM-200 with blank front panel). Installing the RCU-200 Figure D-1. RCU-200 Back Panel Connectors Table D-1.
Remote Control Unit (RCU-200) panel of the RCU-200, and secure it by tightening the captive screws. Route the cable as required and connect the other (male) cable end to the 9-pin COM (female) connector on the back panel of the VTM-200(L). 4. Connect the IEC connector end of the power cord to of the power supply and connect the other end to a properly grounded outlet. The RCU-200 will operate on nominal voltages of 115/230 VAC, 50 or 60 Hz. 5.
Remote Control Unit (RCU-200) Table D-2. Jumper Configuration for RS-422 Interface (RCU-200) Connection Jumper CN7 Jumper CN8 EIA-232 Connect 1-2 No connection RS-422 No connection Connect 1-2 Operating the RCU-200 Operating the RCU-200 is the same as operating a VTM-200. Troubleshooting Table D-3. RCU-200: Problems, Causes, and Solutions Problem/Symptom No LEDs are illuminated. INPUT LEDs flash in alternate pairs (e.g., A+D and B+C); no other LEDs are illuminated.
Remote Control Unit (RCU-200) Environmental Operating temperature 0° to +50°C Storage temperature -40° to +65°C Humidity 0 to 90% (non-condensing) Altitude Operating: to 10,000 feet (3,050 meters) Non-operating: to 50,000 feet (15,240 meters) Transportation 24” (9.5 cm) impact-drop survivable in original factory packaging Mechanical Dimensions Weight Height: 1.75" (4.45 cm) Width: 19.00" (48.26 cm) Depth: 2.41” (6.12 cm) 1.6 lb (0.
Remote Control Unit (RCU-200) Pinouts To Main Unit Figure D-2. RCU-200 TO MAIN UNIT 9-pin Male Connector Table D-4. Pinouts for RCU-200 TO MAIN UNIT Connector Pinout EIA-232 Signal Pinout RS-422 Signal 1 N.C. 1 No Connection 2 RX- (from VTM-200) 2 RX - (from VTM-200) 3 TX- (to VTM-200) 3 TX + (to VTM-200) 4 N.C. 4 No Connection 5 GND 5 Signal Ground 6 N.C. 6 No Connection 7 NC 7 RX + (from VTM-200) 8 NC 8 TX - (to VTM-200) 9 N.C.
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Appendix E ♦ Glossary 601 An international standard (ITU-R BT.601) for component digital television. It defines the sampling systems, matrix values, and filter characteristics for digital television. 8 VSB Vestigial sideband modulation with 8 discrete amplitude levels. 16 VSB Vestigial sideband modulation with 16 discrete amplitude levels. Advanced Television Systems Committee (ATSC) The parent organization that developed, tested and described the form and function of the US digital television formats.
Glossary Broadcast Legal Encoding video signal parameters to conform to prescribed limits for broadcast. Encoding rules vary by NTSC, PAL, country and broadcast facility. BTSC Broadcast Television Standards Committee. A US standard for stereo audio encoding in NTSC broadcast television. CAV Component Analog Video CES Consecutive Errored Samples Composite Video A single video signal that includes all color video and timing information.
Glossary Demodulator A receiver, such as for television broadcast, cable, and closed circuit applications. A TV demodulator receives and processes of f-air or cable RF signals and provides baseband video and audio outputs. Differential Gain A measurement that specifies how much the chrominance gain is affected by the luminance level. Expressed as a percentage showing the largest amplitude change between any two levels, it indicates how much color saturation variance occurs when the luminance level changes.
Glossary Encoded Clip Softness In the encoded legalization process, “softness,” as applied to encoded clips, refers to the processing of the video at the point of the clip. The clips are applied in YCBCR color space. The clip point is either an immediate limit (no softness) or will have a range of values leading to the clip point, all reduced to smooth the clip point to a less immediate limit (softness).
Glossary Gamma This term applies to the linearity of the change from black to white. Gamma controls adjust the gray or 50% point of the video either up or down, with the effect of changing the gray level of the video. Gamut The whole or total of whatever is being addressed. In color space, gamut refers to all colors which are included in a particularly defined color group, such as 601 gamut.
Glossary LCD Liquid Crystal Display LED Light-Emitting Diode LFE Low Frequency Effects LTC Longitudinal Time Code. A SMPTE timecode standard usually recorded onto the linear audio track of a VTR. Luminance The degree of brightness (black and white portion of the video signal) at any given point in the video image. A video signal is comprised of luminance, chrominance and sync. If luminance is high, the picture is bright and if low the picture is dark.
Glossary Packetized Elementary Stream (PES) The data structure used to carry elementary stream data. The packets consist of a header followed by payload data, and a stream is a series of packets which form an elementary stream and have a single stream identification. PAL Phase Alternation Line; the standard color television system in many European and other countries. Passive Looping Video and audio signals routed through components, even if power is removed.
Glossary QAM Quadrature Amplitude Modulation; the technique used by cable TV systems (64QAM and 256-QAM) to remodulate signals for distribution in a cable plant. RGB Legalization Limiting of luminance and color difference video signals such that, once transcoded into RGB component video signals, the resultant video does not violate the maximum or minimum signal levels as defined by component video level rules.
Glossary Tally A system used to light lamps and indicate usage. Most production switchers have an internal tally system to indicate selected functions, and which selected functions are currently involved with Program. TCP Transmission Control Protocol Telecine A device used to convert film to video; movie film is digitally sampled and converted to video frame by frame in real-time.
Glossary Zero Carrier Pulse (chopper) In a TV demodulator, removes the carrier in the vertical interval for a short period, enabling depth of field measurement.
Index A Audio AES/EBU, C-4 Audio IN Connector, C-4 Audio Out Connector, C-4 Ballistics, 3-13 Expanding Display, 3-16 Expanding the display, 3-16 Gradicule Scales, 3-6 Meter Responses, 3-13 Zoom, 3-16 B Back Panel Connectors, 2-4 C Calibration Interval, 3-20 Calibration Pulse, 3-20 Cold Start, 4-1 Connectors Back Panel, 2-4 Controls Front Panel, 3-1 Customer Service, B-1 D Display Audio, 3-16 Sample, 3-6 Selecting Display Format, 3-15 SVGA, 3-5 Vector, 3-16 VGA OUT Connector Pinouts, C-1 Error Data, 3-20
Index K Keyboard, 2-5, 3-21 Commands, 3-23 Pinouts, C-3 N NTSC, 3-6 O Overlay Mode Video, 3-15 P PAL, 3-6 Pinouts GPI/TALLY, C-2 Keyboard Connector, C-3 RCU-200 TO MAIN UNIT Connector, D-5 RS-232 COMM Connector, C-2 VGA OUT Connector, C-1 R Rackmount, 2-1, 2-3 Parts, 2-3 RCU-200, D-1 5 VDC IN connector, D-5 Back Panel, D-1 Connecting, 2-6 Installing, D-1 Operating, D-3 Pinouts, D-5 Specifications, D-3 TO MAIN UNIT Connector, D-5 Troubleshooting, D-3 Remote Control Configuring, 2-6 Return Authorization,