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Performance Tests
Performance Verification Procedures
Check Delay Between Channels
Equipment Required:
One medium-frequency leveled sine-wave generator
(Item 10), one precision, 50 coaxial cable (Item 4), one 50 terminator
(Item 3), and a dual-input-coupler (Item 7).
Prerequisites:
See page 1-15.
Procedure:
DO NOT use the vertical position knob to reposition any channel
while doing this check. To do so invalidates the test.
1.
Install the test hookup and preset the instrument controls:
a.
Initialize the front panel;
Press save/recall SETUP.
Press the main-menu button Recall Factory Setup.
Press the side-menu button OK Confirm Factory Init.
b.
Modify the initialized front-panel control settings:
Do
not
adjust the vertical position of any channel during this
procedure.
Set the horizontal SCALE to 500 ps.
Press SHIFT; then ACQUIRE MENU.
Press the main-menu button Mode, and then press the side-me-
nu button Average 16.
c.
Hook up the test-signal source:
Connect, through a 50 precision coaxial cable, followed by a
50 termination, the sine wave output of a medium-frequency
sine wave generator to a dual-input coupler. See Figure 1-10.
Medium
Frequency
Sine Wave
Generator
Dual Input Coupler
50
Terminator
Output
50 Cable
Figure 1-10: Initial Test Hookup