Chapter 2 43
Performance Verification Tests
1. 10 MHz Reference Output Accuracy
10 s.
d. Press Enter.
e. On Channel 1, press 50 Ω/1 MΩ until the LED is lit.
f. On Channel 1, press x10 Attenuator until the LEd is extinguished.
g. On Channel 1, press AC/DC until the LED next to DC is
extinguished.
h. On Channel 1, press 100 kHz Filter until the LED is extinguished.
i. On Channel 1, press Trigger/Sensitivity until Auto Trig is
displayed.
j. Use the arrow keys to toggle to off.
k. Press Freq & Ratio.
5. Wait for the universal counter reading to stabilize. Record the
universal counter reading in Table 2-3 as Counter Reading 1 with
0.1 Hz resolution.
6. Set the analyzer by pressing the following keys:
System, Alignments, Timebase, Fine
7. Record the number in the active function block of the analyzer in
Table 2-3 as Timebase Fine.
8. Press the ↑ (up arrow) key on the analyzer.
9. Wait for the frequency counter reading to stabilize. Record the
frequency counter reading in Table 2-3 as Counter Reading 2 with
0.1 Hz resolution.
10.Press the ↓ (down arrow) key on the analyzer 2 times.
11.Wait for the frequency counter reading to stabilize. Record the
frequency counter reading in Table 2-3 as Counter Reading 3 with
0.1 Hz resolution.
12.Press Preset on the analyzer to return the DAC settings to their
initial values. Press the Factory Preset softkey, if it is displayed.
13.Subtract Counter Reading 1 from Counter Reading 2 and record the
difference in Table 2-3 as the Positive Frequency Change.
14.Subtract Counter Reading 3 from Counter Reading 1 and record the
difference in Table 2-3 as the Positive Frequency Change.
15.Of the Positive Frequency Change and negative frequency change
values recorded in Table 2-3, record the largest value in Table 2-3 as