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Test 2-8: Duty Cycle
Description
The purpose of this test is to verify that the AFG meets its specifications for
square wave duty cycle. Duty cycle is determined by measuring positive
pulse width.
Equipment Setup
• Connect equipment as shown in Figure 2-9
• Set Counter to: Pulse Width, DC coupling, 50Ω input impedance
Test Procedure
1. Reset the AFG:
*RST;*CLS Reset AFG and clear
status registers
2.
Set the AFG to output a square wave:
FUNC SQU; Select squarewave
:VOLT MAX Set to max amplitude
Perform steps 3 - 7 for each frequency listed in Table 2-8:
3. Abort the waveform if it has been previously initiated:
ABORT
Figure 2-9. Equipment Setup for Test 2-8
60 Verification Tests Agilent E1445A Service Manual