Tektronix 2712 Spectrum Analyzer

• 频率精度 5 × 10^-7
• 灵敏度至 -139 dBm (-92 dBmV) with Built-In Preamp
• 四条数字踪迹加真实模拟踪迹显示
• 124 K of RAM
• EMC Measurements with Optional Quasi-Peak Detector
• 扫频测量 至1.8GHz的内部或外接跟踪源

应用

• 广播传输领域
• 通讯系统
• EMC 检测

Tektronix 2712 频谱仪内建频率计, 完全的编程能力, 数字和真实模拟显示, 108个或更多的显示存储.
人性化设计，操作简便，实时时钟年月日可直接合并波形一起打印.

Frequency-corrected tuning and phase-lock stabilization enhance the ability to resolve close-in signals and reliably demodulate narrowband signals. Sensitivity up to -127 dBm (-80 dBmV) at 300-Hz resolution bandwidth (RBW) lets you see weak signals. The built-in preamp can improve sensitivity another 12 dB, up to -139 dBm (-92 dBmV). Up to 80-dB on-screen dynamic range ensures visibility of weak signals in the presence of strong ones.

A 300 Hz RBW filter with a shape factor <7:1 means you'll see many close-in sidebands and spurious or unexpected signals you might otherwise miss. At the other end of the spectrum the 5-MHz RBW filter is useful when demodulating wideband signals such as actively modulated video carriers.

The built-in signal counter, with 0.5 ppm ±10 Hz accuracy, offers added power for rapidly identifying signals. The capability to choose between digital and true-analog displays lets you examine signals for characteristics that are not visible on digital-only displays.

Sweep speeds of 1 µsec/div, TV Line and TV Field triggering, an internal audio amplifier, AM/FM detectors, and the optional Video Monitor Mode all make video communications measurements easier.

Bandwidth, Carrier-to-Noise, Noise Power, Signal Search, and FM Deviation modes provide additional measurement power and convenience. Occupied Bandwidth Mode, with percent settable from 1 to 99%, aids in broadcast and radio measurements.

The optional internal or external tracking generator provides high dynamic range swept measurements to 1.8 GHz.

EMC Measurement

To help simplify your EMC measurements, the 2712 offers an optional quasi-peak detector, EMI resolution bandwidth filters, and fully corrected E-field intensity measurements to assist in precertification and troubleshooting. EMC ancillary devices are available to provide a complete measurement solution.

Tektronix 2711 Spectrum Analyzer

The 2711 offers a wide range of features at an extremely affordable price. This value leader is well-suited for checking broadcast transmitter performance and communications system operations, looking for unwanted RF emissions, testing two-way communications equipment, maintaining industrial security, and teaching frequency domain concepts in the classroom, plus a wide variety of other applications.

The standard 2711 shares many of 2712's valuable features, such as compact size and light weight (9.5 kg, about 21 lbs.). Both instruments can also be quickly converted to rack operation with optional rackmount adapters.

Frequency accuracy is 1 × 10^-5 and sensitivity is up to -117 dBm (-70 dBmV) at 3 kHz RBW. The built-in preamp can add another 12 dB, up to -129 dBm (-82 dBmV). Up to 80-dB on-screen dynamic range helps see weak signals, even when strong ones are present.

True-analog display capability, along with fast sweep speeds and TV Line and TV Field triggering provide convenient demodulation of video carriers for making depth-of-modulation checks or looking at special baseband data, VITS, and many other signals.

An internal audio amplifier and AM/FM detectors let you hear demodulated signals, using either the built-in speaker or headphone jack, for fast signal identification and troubleshooting in communications applications.

With the Video Monitor (Opt. 10) installed, you can view broadcast (AM) TV signals or down-converted satellite (FM) signals.

The 2711 can also be used with a set of near-field probes as a handy EMC diagnostic tool.

Characteristics

以下指标同样适用于 2712 和 2711 预热15分钟后，特殊标注的除外。

Frequency Related

频率范围 - 9 kHz to 1800 MHz

中心频率精度 -

• 2712: 5×10^-7 of CF ±700 Hz
• 2711: 1×10^-5 of CF ±5 kHz

频率计数器精度 (Std. 2712, Opt. 02 2711) -

• 2712: 5×10^-7 of CF ±10 Hz, ±1 LSB
• 2711: 1×10^-5 of CF ±10 Hz, ±1 LSB

点光标频率精度*¹ - CF Accuracy ±3% of span

Long-term Drift*¹ -

• 2712: 2 ppm/yr
• 2711: 10 ppm/yr

Short-term Drift -

• 2712: ≤400 Hz maximum drift between correction cycles
• 2711: ≤20 kHz maximum drift between correction cycles

Residual FM -

• 2712: ≤100 Hz pk-pk/20 msec at ≤20 kHz span/div; ≤2 kHz pk-pk/20 msec at >20 kHz span/div
• 2711: ≤2 kHz pk-pk/20 msec

Resolution Bandwidth (-6 dB) -

• 2712: 5 MHz, 300 kHz, 30 kHz, 3 kHz, 300 Hz
• 2711: 5 MHz, 300 kHz, 30 kHz, 3 kHz
• 2712 with Opt. 14: Add 1 MHz, 100 kHz, 10 kHz, and 1 kHz
• 2712 with Opt. 12: Add 1 MHz, 120 kHz, 9 kHz, 1 kHz - 200 Hz replaces 300 Hz filter

Resolution Bandwidth Shape Factor (60 dB/6 dB) - ≤7:1 for RBW ≤1 MHz

Noise Sidebands - ≤70 dBc at 30 × RBW

视频滤波 -

• Approx. 1/100 (Auto) of RBW
• Manual Selection: 3 Hz to 300 kHz in 1-3 sequence

Freq. Span/Div. Range -

• 2712