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Broadcast Television Measurements Data Sheet

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Broadcast Television Measurements Data Sheet Broadcast Television Measurements Data Sheet Broadcast Transmitter Testing with the Agilent 85724A and 8590E-Series Spectrum Analyzers RF and Video Measurements . at the Touch of a Button Installing, maintaining, and troubleshooting your broadcast TV systems can be a complex and time-consuming process. The Agilent Technologies 85724A Broadcast Measurements Personality enhances the Agilent 8590E Series of portable spectrum analyzers, providing customized RF Video measurements for testing broadcast transmitters. These rugged, portable broadcast spectrum ana- lyzers are ideal for field use, or as a production measurement and troubleshooting tool. Satisfy Your Customers and Save Time with One-Button Setting up Your Analyzer is Easy Non-Interfering Measurements A simple process quickly configures the analyzer Your customers expect a quality service with no for your particular TV system. User definable interruptions. With the 8590E-Series spectrum parameters include TV standard, default ITS lines, analyzers and the Agilent 85724A Broadcast and noise power bandwidths. Once these parame- Measurements Personality you can perform nearly ters are set, the analyzer will remember them, all RF plus three key video measurements with- even through power down. Once the analyzer is out interrupting your system. This helps maintain configured, you may tune to channels simply by continuous service to your customers and also entering the channel number and band. If you allows you to make measurements when it is use non-standard channels or want to measure convenient for you. FM radio channels, you can use the frequency tuning mode. The one-button tests ensure accurate and repeat- able measurements. Results may be printed, plot- The 85724A supports PAL-I/B/G, NTSC-M and ted, or stored as the screen image on a RAM card. SECAM-D/K. Advanced Processing Simplifies Measurements The one-button measurements make normally complex and time-consuming measurements at the press of a key. Measurements such as NICAM carrier power utilizes advanced processing to provide an accurate, repeatable measurement that updates at the end of each sweep to help in system adjustments. 2 The Agilent 85724A Broadcast TV Measurements Personality provides these dedicated broadcast TV measurements: RF Measurements • Automatic tuning of vision, sound, and FM broadcast carriers • Vision and sound carrier levels and frequencies (including NICAM for PAL-B,G,I) • Vision to Chrominance Level • Vision in Sound (AM or FM) Simultaneous measurement of carrier levels and • NICAM Intermodulation (PAL-B,G,I) frequencies • Intermodulation Products • Three-tone Intermodulation Test • Spurious Signals • Depth of Modulation (frame-by-frame) • Depth of Modulation (ITS line) • Low Frequency Error (Hum) • Field Sync Distortion • FM Deviation • Carrier to Noise Ratio • Simultaneous TV picture and sound1 Measurement of in-channel intermodulation using Video Measurements Analog+ • Differential Gain1 • Differential Phase1 • Chrominance to Luminance Delay Inequality1 Simultaneous differential gain and differential phase video measurements1 1. Requires Options 107, E81, or E86. 3 Quality Spectrum Analyzers Fit an Analyzer to Your Needs Hardware versatility is not all it takes to keep up Offering high quality spectrum analysis with dedi- to date with rapidly changing technology. Firmware cated broadcast TV measurements, the Agilent 8590E- flexibility is equally important. A Down Loadable Series portable spectrum analyzers offer the right Program (DLP) can give you this flexibility. DLPs frequency coverage to meet your needs. You can are stored on a memory card and are downloaded either order the analyzer and options separately or into the analyzer’s memory. They can be simple order one of the following four system bundle options. functions that repeat often-used sequences or elab- These system bundles provide complete hardware orate tests and calculations, such as the Broadcast and software solutions at a reduced cost. TV Measurements personality. 8591E 8593,4,5,6E Agilent is continually developing these application- 9 kHz–1.8 GHz See Note 1 specific programs. System Bundles E80 E81 E85 E86 Pre-loaded 85724A Broadcast Powerful Yet Portable Measurements Personality Advanced firmware provides tracemath, limit-line AM/FM demod plus TV line trigger testing, Fast Fourier Transforms, and storage for Fast time domain sweeps Analog+ display mode up to 50 traces and states. Adjustable markers let Precision Frequency Reference you select any signal; its amplitude and frequency RS-232 Interface are automatically measured and displayed. Zero Rugged carrying case span markers display amplitude and time or Built in 20 dB pre-amplifier inverse-time information. TV Receiver/Video Tester 1. 8594E: 9 kHz–2.9 GHz; 8595E: 9 kHz–6.5 GHz Use the built-in clock-calendar to time and date 8596E: 9 kHz–12.9 GHz; 8593E: 9 kHz–22 GHz stamp your active CRT traces. Traces can be stored on memory cards or in the internal memory of the analyzer. Flexibility for the Future A built-in card cage allows you to configure a vari- Local oscillator output options are available for ety of circuit-card options that add measurement compatibility with sideband adapters. capability. Circuit-card options are retrofittable, so the options you need are always available. In Sturdy and reliable, each analyzer is slightly larger addition to the system option bundles described than the size of a briefcase, weighs 16 kg, and has above, any 8590E-Series spectrum analyzer may a tilt-bail handle. be configured for broadcast TV measurements. Suitable options include: Additional Features • GPIB (IEEE-488) programmability (option) Option 301: Fast time domain sweeps, Analog+, TV • RS-232 programmability (option) line triggering, and FM/AM demodulation. (This is • Parallel Printer port (option) required for most broadcast TV measurements.) • Direct printer and plotter dump • Direct keyboard access for titling traces and Option 107: TV Receiver, Video Tester (including immediate remote command execution (option) Time Gated Spectrum Analysis) • Agilent service, support, and documentation 4 Characteristics The following information describes the characteris- Three Tone Test tics for the Agilent 85724A Broadcast Measurements Measurement of vision-chroma-FM sound intermodulation Personality (revision B.00.00 or later). These char- when a test generator with three CW tones is inserted to acteristics are to give an indication of the perform- emulate the carriers in a channel. ance of the measurements in the 85724A. The meas- Relative Accuracy: ±1.0 dB for C/N >40 dB and urements are listed individually along with the intermod >10 dB above the analyzer noise floor appropriate characteristics. Spurious Signals Channel Selection Measurement of +(2 x vision to sound carrier spacing) and Tune Configurations: –(vision to sound carrier spacing) spurious on a channel. CCIR VHF, S, and UHF Relative Accuracy: ±2.0 dB for peak detection, M & B (Netherlands) no averaging, ANALOG+ off, MIN HOLD off FCC-AIR PRC Bands Modulation Depth (Frame) Also channels tunable by vision carrier frequency using Measurement of modulation depth across eight successive F NRM mode. User can define span (6 MHz <span <12 MHz). frames. F CTR mode may also be used to select other carriers such Range: 50 to 93% as FM channels. User can also define span. Accuracy: ±2.0% for C/N >40 dB Formats Available Modulation Depth (Line) PAL: I, B, G, D Measurement of blanking level, residual carrier, and NTSC: M modulation depth on a single ITS line. SECAM: D, K Range: 50 to 93% Accuracy: ±2.0% for C/N >40 dB Carrier Level Measurement of peak vision carrier level and peak vision Low Frequency Error to FM sound carrier ratio. NICAM ratio available for Measurement of low frequency amplitude modulation PAL systems. (AM) on the vision carrier. Range: –50 dBm to +23 dBm Range: 0.5 to 10.0% Absolute Accuracy: ±2.0 dB Accuracy: ±1.0% NICAM Accuracy: ±2.0 dB Field Sync Distortion Chroma Level Measurement of level distortion during field coggle and Measurement of peak vision carrier level and peak vision also end-to-end of the field sync. to chroma ratio. Range: 0.5 to 10.0% Range: –50 dBm to +23 dBm Accuracy: ±2.0% for C/N >40 dB Absolute Accuracy: ±2.0 dB for C/N >40 dB Relative Accuracy: ±1.0 dB for C/N >40 dB Carrier to Noise Measurement of vision carrier to noise ratio normalized to Vision in Sound user specified noise power bandwidth (default 4.75 MHz). Measurement of peak-to-peak amplitude modulation on Range: >60 dB for input >–9.0 dBm and total power the FM modulated carrier. at mixer <–8.0 dBm Accuracy: ±2.0% for stable FM sound carrier and Accuracy: <1.25 dB for measured noise >10 dB above C/N >40 dB the noise floor and adjusted <–60 dB from the refer- ence level 5 Characteristics, continued Intermod Check Differential Gain Digital emulation of analog display for checking in-channel Measurement of differential gain linearity. intermodulation with user definable spec. bar. Accuracy: ±6% (requires TV receiver, video tester Dynamic range: 70 dB usable to 80 dB option hardware) Spec. Bar range: –1 to –79 dB from vision carrier peak Differential Phase NICAM Intermodulation Measurement of differential phase linearity. Measurement of vision, FM sound, and NICAM sound Accuracy: ±4° (requires TV receiver, video tester carrier intermodulation measured on a quiet or noise TV line option hardware) (a TV line with no video modulation present). Range: –1 to –60 dB for C/N >60 dB (–1 to –50 dB for Chrominance to Luminance Delay Inequality C/N >50 dB). Level displayed is relative to the mean Measurement of delay between chrominance and luminance level of the quiet or noise line. Default line is 6. components of the program video. Accuracy: ±45 ns (requires TV receiver, video tester FM Deviation option hardware) Measurement of the peak to peak FM deviation of the FM sound carrier or FM radio channel. Range: ±1 kHz to ±100 kHz (with audio modulation) Accuracy: ±2.0% for deviation >20 kHz on stable FM carrier.
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