5
Performance Checks
Test Procedures
5-9
Squarewave
Characteristics
This tests the characteristics of the square waveform. It includes
transition times, ringing and overshoot.
Squarewave Checks
Equipment: Oscilloscope, 50
Ω
, 20 dB attenuator feed through
Preparation:
1. Configure the Oscilloscope follows:
Termination:
50
Ω
, 20 dB attenuator feed through at the
oscilloscope input
Setup:
As required for the test
2. Connect 5251 output to the oscilloscope input
Configure the 5251 as follows:
Frequency: 1
MHz
Waveform: Squarewave
Amplitude: 10
V
Output: On
Test Procedure:
1. Perform Squarewave Characteristics tests using Table 9
Table
Chapter 5-9, Square wave Characteristics - Continued
Parameter
Tested Error
Limits
Oscilloscope
Reading
Pass
Fail
Rise/Fall Time
<4.5 ns
Ringing
<6 % + 10 mV
Over/undershoot
<6 % + 10 mV
Sinewave
Characteristics
This tests the characteristics of the sine waveform. It includes
distortion, spectral purity and flatness. Tests are done for both the
DAC route (arbitrary and standard waveforms) and the DDS route
(CW and modulated waveforms).
Sinewave Distortion,
DAC Output
Equipment: Distortion Analyzer, Spectrum Analyzer, and
ArbConnection
Preparation:
1. Connect 5251 output to the distortion analyzer input. Configure
the 5251 as follows:
SCLK:
As required by the test
Waveform: Arbitrary
Amplitude: 5
V
Output: On
Summary of Contents for 5251
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