DS335 Synthesized Function Generator
DS335 Synthesized Function Generator
DS335 Synthesized Function Generator
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Performance Tests 4-9<br />
2) Read the AC voltage on the voltmeter. Repeat at 1 kHz and 10kHz. The<br />
readings should be between 4.94 and 5.06 Vrms.<br />
Triangle/Ramp Waves<br />
specification: ±1.2%<br />
1) Set the <strong>DS335</strong> to triangle wave, 100Hz, 2.89Vrms (10 Vpp), and 50Ω<br />
Load Impedance.<br />
2) Read the AC voltage on the voltmeter. Repeat at 1 kHz and 10kHz. The<br />
readings should be between 2.85 and 2.93 Vrms.<br />
Frequency > 100 kHz<br />
Sine Waves<br />
specification: ±0.1 dB (±1.2%), frequency > 100kHz<br />
1) Connect the <strong>DS335</strong>'s output to the thermal converter (because the<br />
convertor has a 50Ω impedance no terminator is needed). Connect the<br />
thermal converter output to the voltmeter using the most sensitive<br />
voltmeter range since the nominal signal level is about 7mV DC. Allow<br />
the <strong>DS335</strong> at least 1/2 hour to warm up.<br />
2) Set the <strong>DS335</strong> to sine wave, 1 kHz, 3.00 Vrms, and 50Ω Load<br />
Impedance. Allow the thermal converter 15 seconds to stabilize and<br />
record the result as the 1kHz reference value.<br />
3) Step the <strong>DS335</strong>'s frequency in 500kHz steps from 0Hz to 3.1MHz. Allow<br />
the thermal converter to stabilize at each frequency and record the<br />
results.<br />
4) Verify that the readings are within ±1.2 % of the 1 kHz reading for<br />
frequencies above 1kHz.<br />
Square Waves<br />
specification: ±5%, frequency < 3.1MHz<br />
1) Connect the <strong>DS335</strong>'s output to the oscilloscope with a 50Ω terminator.<br />
Set the <strong>DS335</strong> to square wave, 1 kHz, 10Vpp, and 50Ω Load<br />
Impedance. Set the scope to 2V/div and 0.1ms/div.<br />
2) Step the <strong>DS335</strong>'s frequency in 100kHz steps from 0kHz to 3.1 MHz.<br />
3) Verify that the <strong>DS335</strong>'s output is within ±5% of the 1kHz amplitude.<br />
DC OFFSET ACCURACY<br />
This test measures the accuracy to the <strong>DS335</strong>'s DC offset function.<br />
DC Only<br />
specification: 1.2% of setting ±.2mV<br />
1) Connect the <strong>DS335</strong>'s output to the voltmeter with a 50Ω terminator. Set<br />
the <strong>DS335</strong> to 0.0V amplitude, and 50Ω Load Impedance.<br />
<strong>DS335</strong> <strong>Synthesized</strong> <strong>Function</strong> <strong>Generator</strong>