SWITCHED FILTER

CALIBRATION

SHAPER CALIBRATION

Increment

DAC

Settings

Correctly

Adjusted

Decrement

DAC

Setting

Figure 4-5.Shaper DAC Adjustment Waveform Examples

CAUTION

When saving calibration data, turn- ing off the instrument before the $ prompt returns to the screen can cause all stored data to be lost.

c.Press CHANNEL 2 DISPLAY: OFF.

d.Press CHANNEL 1 DISPLAY: ON.

e.Press CHANNEL 1 MENU key.

f.From the Channel 1 Menu display, select

POWER.

g.Press OFFSET/RESOLUTION.

b.Set Resolution to 5 dB/Div.

c.Adjust Offset to center the display.

2.Adjust the Switched Filter Shaper DAC for each of the frequency bands as follows:

a.At the $ prompt on the PC display, type: calterm 138 and press <ENTER>.

NOTE

At the start of each frequency band, there will be a delay while the minimum unlev- eled power point is determined.

b.On the computer keyboard, use 1, 2, or 3 to in- crement and 8, 9, or 0 to decrement the value of the DAC’s setting to adjust the triangle waveform being displayed on the 562 Network Analyzer (Figure 4-5) for the most linear re- sponse.

There will be a delay while the amplifier com- pression point is determined and after each key stroke as the DAC is adjusted.

c.When the DAC has been adjusted for the cur- rent frequency band, press Q on the keyboard to go to the next frequency band.

d.Repeat steps b. and c. until the DAC has been adjusted for all frequency bands.

e.Press Q on the keyboard to exit the program. (The $ prompt will appear on the screen.)

f.Record step completion on the Test Record.

3.Store the calibration data in non-volatile memory (EEPROMs) on the A17 CPU PCB as follows:

a.Type: calterm 787 and press <ENTER>. (The $ prompt will appear on the screen when the data has been stored.)

b.Record step completion on the Test Record.

4-20

682XXB/683XXB MM

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Anritsu 682XXB, 683XXB manual Dac
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682XXB, 683XXB specifications

The Anritsu 683XXB and 682XXB series are advanced vector network analyzers (VNAs) renowned for their precision and versatility in characterizing RF and microwave components. Designed for engineers and technicians involved in the development, manufacturing, and testing of high-frequency devices, these analyzers offer state-of-the-art technology that ensures optimal performance in various applications.

One of the hallmark features of the Anritsu 683XXB and 682XXB is their high dynamic range, which allows for accurate measurements of small reflection and transmission coefficients, essential for assessing the performance of complex RF structures. With frequency coverage extending from DC to 70 GHz, these analyzers cater to a broad spectrum of applications, making them suitable for industries such as telecommunications, aerospace, and automotive.

The user-friendly interface of the Anritsu VNAs is complemented by a high-resolution display, which facilitates easy navigation through measurement setups and results. The analyzers feature multiple measurement modes, including S-parameter measurements, time-domain analysis, and noise figure measurements, providing engineers with comprehensive tools for device characterization.

Both the 683XXB and 682XXB implement advanced calibration techniques, including automated calibration and error correction methods, to enhance measurement accuracy. These methods significantly reduce the uncertainties associated with test setups, enabling reliable performance evaluations of components like filters, amplifiers, and antennas.

Anritsu’s proprietary technologies, such as the VectorStar and ShockLine series integration, further empower the 683XXB and 682XXB models. These technologies enable high-throughput testing and improved measurement stability, addressing the needs of modern production environments that demand rapid turnaround times without sacrificing precision.

Additionally, the analyzers come equipped with various connectivity options, including USB, LAN, and GPIB, ensuring seamless integration into automated test systems. This adaptability enhances the analyzers' utility in both laboratory settings and field operations.

In conclusion, the Anritsu 683XXB and 682XXB series vector network analyzers represent the pinnacle of RF and microwave testing technology. With their unmatched precision, comprehensive measurement capabilities, and advanced calibration techniques, these instruments are indispensable tools for professionals striving to push the boundaries of high-frequency device performance and reliability.
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