Agilent Technologies E4438C - Manual (Page 73)

Performance Tests
Timebase Aging Rate (Manual Test - Option UNJ, Option 506, or Option 1E5 Only)
3- 25
Equipment Setup
Figure 3-23 Timebase Aging Rate
(Manual Test - Option UNJ, Option 506, or Option 1E5 Only) Setup
Procedure
1. Preset all instruments and let them warm up for at least one hour.
2. If the oscilloscope does not have a 50
Ω
input impedance, connect channel 1 through a 50
Ω
feedthrough.
3. On the oscilloscope, adjust the external triggering for a display of the 10 MHz REF OUTPUT signal from
the synthesizer.
a. On Channel 1 of the oscilloscope, set the following:
• Display: On
• Volts/Division: 500 mV
• Input Coupling: dc
• Input Impedance: 50 ohms (or use a 50 ohm feedthrough)
b. On Channel 2 of the oscilloscope, set the following:
• Display: Off
• Input Coupling: dc
• Input Impedance: 50 ohms (or use a 50 ohm feedthrough)
c. On the Timebase of the oscilloscope, set the following:
• Time/Division: 5 ns
d. On the Trigger of the oscilloscope, set the following:
• Trigger Source: CH 2
• Trigger Mode: Normal
• Trigger Level: 0 V