Overview of Performance Tests

This section describes the available ESG signal generator performance tests. These performance tests verify that the signal generator meets specifications.

In all test equipment configurations, cables and adapters must be properly torqued. Exceeding recommended torque values can cause damage to a cable or adapter, and may cause inaccurate test results.

Recommended Calibration Cycle

Perform the tests listed below at least once every 24 months.

E4428C	E4438C	Performance tests are listed in the order they should be performed to prevent invalid results and minimize changes in test equipment configurations.
x	x	Self Test
x	x	Maximum Output Power
x	x	Power Level Accuracy
	x	Digital Mod. Power Level Accuracy Relative to CW
x	x	Harmonic Spurious
	x	Subharmonic Spurious
x	x	Nonharmonic Spurious
	x	WCDMA Adjacent Channel Power (Option 400 Only)
	x	CDMA Adjacent Channel Power (Option 401 Only)
x	x	Phase Modulation Deviation Accuracy
x	x	FM Frequency Response
x	x	FM Distortion
x	x	Phase Modulation Distortion
x	x	AM Distortion
x	x	AM Frequency Response
x	x	AM Accuracy
x	x	FM Deviation Accuracy
x	x	Phase Modulation Frequency Response
	x	Burst Modulation On/Off Ratio
x	x	Pulse Modulation On/Off Ratio
	x	Digital Modulation Quality
x	x	DCFM Carrier Offset
	x	GSM Loopback Check (Option 300 Only)
x	x	Residual FM
x	x	Single-Sideband Phase Noise — E4438C Opt UNJ and E4428C Only (Manual Performance Test)
		Performance Test Record