High Definition Waveform Monitor
WFM1125, Opt. 0A, 0B, 0C, and 0D
Features & Benefits
- Waveform/Vector Monitor for HDTV Baseband Video
- Two SMPTE 292M, 1.485 Gb/s Serial Component Inputs
- Available for 1920×1080i, 1280×720p, or Dual Digital Video Formats
- Multiformat Option Adds 1920×1080i/50, 1920×1080/24sF, and 1920×1080p/24 Formats
- Parade and Overlay Waveform Displays in RGB, GBR, or Y/Pb/Pr
- Vector display for 240M or 274M Colorimetry
- Tektronix Diamond, Lightning, and Bowtie Displays
- Expanded Waveform Scales for Extended Accuracy
- Waveform Save Mode for Signal Comparison
- NTSC or Trilevel External Reference
- Analog Y/Pb/Pr and Digital Picture Monitor Outputs
- AES/EBU Output of Audio Embedded in SMPTE 274M Data (1920×1080i/60 Format)
- Gamut, Status, and Line-by-Line CRC Monitoring
- VGA Display and Screen Output
- Digital High-Definition Baseband Monitoring for Production and Broadcast
Digital Television Waveform Monitor
The WFM1125, equipped with Opt. 0A, 0B, 0C, or 0D, is the latest in a series of Tektronix high-definition waveform monitors to both acquire and display the SMPTE 292M television signal in its native digital format. All signal processing is mathematical, resulting in very high display accuracy, even in magnified modes. The only analog processing is an instrument reference to external trilevel or NTSC sync and conversion of the digital signal for output to an external analog picture monitor.
Handling the digital signal without conversion to analog provides several distinct user advantages. Waveforms and screen graphics are clear and bright on the instrument VGA display and the WFM1125 display can be output to a conventional VGA computer monitor for easy viewing in large operating centers. The operator can view video data in its raw, unfiltered form, or mathematically accurate filters may be applied. The operator can store a display for reference, allowing comparison of one video signal to another. The engineer is assured the display is accurate and directly related to data values. And AES/EBU audio embedded in the 1920×1080i/60 video format can be easily extracted for thorough evaluation using a companion Tektronix 764 digital audio monitor.
The WFM1125 selects between two SMPTE 292M, 1.485 Gb/s data signals transporting video and, in the 1920×1080i/60 high-definition format (Opt. 0A, 0C, or 0D), embedded audio. Opt. 0B monitors video signals in the SMPTE 296M, 1280×720p high-definition format.
The operator may display data signals as video waveforms in Y/Pb/Pr, RGB, or GBR format. A color vector display of the Pb and Pr color difference components is provided for color matching, with graticules corresponding to 75% or 100% color bars with SMPTE 240M (BTA-S001A) or SMPTE 274M (ITU-R BT.709) colorimetry. A Diamond gamut display provides a reliable indicator which allows the graphics operator maximum color flexibility without violating RGB color space. Lightning and Bowtie displays assist the engineer in camera and system setup. These displays can be stored for reference, facilitating camera and graphics matching.
SMPTE 292M error checking is fully supported by the WFM1125 on a line-by-line basis for luminance and chrominance components. A rear-panel signal may be enabled to trigger external equipment in the event of a data CRC error. Engineers will appreciate the WFM1125's data list feature, with quick access to ancillary data locations.
The Tektronix WFM1125 is ideal for both operational and technical monitoring applications. Its selection of video displays and display storage capabilities provide the tools needed by operators to efficiently monitor the creation and correction of digital high-definition signals. This same instrument provides the data analysis capabilities needed by the engineer to setup digital high-definition sources and systems for conformance to standards, compatibility with other devices, and best technical quality. The Tektronix WFM1125 digital high-definition waveform monitor is the definitive tool for operators and engineers in the new high-definition DTV environment.
Uninterpolated display shows discrete data word steps.
Bowtie display is available to resolve channel-to-channel timing.
Waveform may be displayed RGB or Y/Pb/Pr.
30 MHz sweep display magnified x10.
Lightning display aids setup of component recorders.
Vector display includes I and Q axis guides for color correction applications.
Out-of-gamut RGB components are easily identified with the Tektronix Diamond display.
Serial Digital Interface
Video Inputs - Two 1.485 Gb/s SMPTE 292M/BTA-S004A compatible
Impedance - 75 Ohm BNC, internally terminated
Monitor Output - 1.485 GB repeat of selected input
Output Level - 800 mVp-p ±10%
External Reference Input
Sync Format - RS-170A, SMPTE 240M, SMPTE 274M
DC Input Impedance - >15 kilohm
Timing Uncertainty - <5 ns
Analog Picture Monitor Output
Format - Y, Pb, Pr, with trilevel sync on Y channel
DAC Resolution -
Luminance Channel: 9 bit
Chrominance Channels: 10 bit
Impedance - 75 Ohm unbalanced
AES/EBU Digital Audio Output (1920×1080i/60 Format Only)
Format - ANSI S.4.40
Amplitude - 1.0 V ±10%
DC Offset - 0.0 V ±50 mV
Rise/Fall Time - 30 ns to 44 ns
Output Channels -
CH A: 1/2, 3/4, 5/6, 7/8; CH B: 1/2, 3/4, 5/6, 7/8
Different channel pairs must be selected for CH A and CH B
Vertical Deflection System
Frequency Response -
Luminance (Y) Channel: 50 kHz to 30 MHz within 0.5% of response at 50 kHz
Chrominance Channels: 50 kHz to 15 MHz within 0.7% of response at 50 kHz
LOWPASS: ≥10 dB at 15 MHz
Gain - X1, X5, X10, frequency response accuracy is maintained in X5 and X10
Offset - CH2 and CH3 may be offset from CH1 by 350 mV
Cursor Accuracy - <0.25% for full scale
Horizontal Deflection System
Sweep - Displays "NO SIGNAL" message when no signal is present
Rates - 1 line, 2 line, 3 line, 1 field
Line Select - Selected line in 1 line, selected line 1st in 2 line
Cursor Accuracy - ≤0.25% for full scale
Component Vector Mode
Frequency Response - >14 MHz
Vertical Gain Accuracy - <0.25%
Horizontal Gain Accuracy - <0.25%
Magnification - X1, X5, X10
Display - Pb horizontal, Pr vertical
Lightning and Diamond Modes
Vertical Gain Accuracy - <0.25%
Horizontal Gain Accuracy - <0.25%
Lightning Display - Y is displayed vertically. Pb is displayed horizontally on top half of display. Pr is displayed horizontally on bottom half of display.
Diamond Display - GBR deflection axis indicated on display
Common Mode Rejection Ratio - >44 dB to 15 MHz
Accuracy - <0.25%
Internal Timing Match - 0 clock cycles
Matrix Coefficients - SMPTE 240M (BTA-S001A) or SMPTE 274M (ITU-R BT.709)
Word Range - 1.82 lines (4000 words)
Display Format - HEX, DEC
Save and Display Waveform
Delay Time from Button Push - Less than three frames
Reference Memory Size - One frame
CRC Error LED - Remains on 0.5 seconds after error
CRC Error Count - Number of errors and time since last start
GAMUT Error - Nominally 105% of legal RGB
Number of Memories - Four setups
Save/Recall - Front-panel or remote ground closure
Display Area - 9.5-cm horizontal × 7.1-cm vertical
Resolution - 640 H × 480 V pixels
WFM1125 rear panel
Environmental, EMC, Safety
Temperature - Operating: 0 to +40 °C
Humidity - Operating: 20% to 80%, noncondensing
Altitude - Operating: Up to 15,000 ft. (4,572 m)
Shock - Operating: 294 m/s2 (30 G), half sine, 11 ms duration
Safety Compliance - UL 3111-1, CSA1010.1, EN61010-1, IEC61010-1. MC=UL1244
Emission - EN 55011, EN 61000-3-2
Immunity - IEC 61000-4-2, 61000-4-4; EN 61000-4-11; ENV 50140, 50142, 50204; FCC Part 15, Subchapter B, Class A
Source Power -
Voltage Ranges: 90 to 240 V AC
Line Frequency: 48 to 63 Hz
Power Consumption - 90 W, 100 VA maximum
One year, return to Tektronix Factory Service Center.