Following procedure lets you measure the video

PERFORMANCE	PULSE MODULATION TEST:
VERIFICATION	VIDEO FEEDTHROUGH

Test

The following procedure lets you measure the video

Procedure

feedthrough that occurs during pulse modulation.

1. Set up the 682XXB/683XXB as follows:

a. Reset the instrument by pressing

SYSTEM

then

Reset

. Upon reset, the CW Menu is dis-

played.

b. Press

to open the current frequency

Edit F1

parameter for editing.

c. Set F1 to 5.0 GHz.

d. Press

to open the current power level

Edit L1

parameter for editing.

e. Set L1 to the maximum leveled output power

level for the instrument being tested (refer to

Table 3-2, page 3-6).

f. Press

, then

. The Inter-

MODULATION

Pulse

nal Pulse Status menu is displayed.

g. At the Internal Pulse Status menu, press

Edit Width

and set pulse width W1 to 5.0 s.

h. Press

and set the PRI to 0.01 ms.

Edit Period

i. Press

to turn pulse modulation on.

On/Off

2. Set the Oscilloscope controls as follows:

a. Vertical Sensitivity: 5 mV/div

b. External Trigger: On the positive slope of the

Channel 1 signal input

c. Horiz Time Base: 1 s/div

NOTE

Use the Oscilloscope’s 20 MHz bandwidth

limit to aid in viewing the voltage spikes. It

may be necessary to adjust the Oscillo-

scope’s horizontal level as any ripple or

voltage spikes are generally very small in

amplitude.

3. Measure and record the voltage spikes (video

feedthrough) on the Test Record. To meet specifi-

cations, they must be <10 mV.

3-44	682XXB/683XXB MM

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.

Anritsu 682XXB, 683XXB manual Following procedure lets you measure the video

Models: 682XXB 683XXB

PERFORMANCE

VERIFICATION