Check delta time measurement accuracy <4 GHz models.
Equipment Required Prerequisites
One 50 Ω, precision coaxial cable (Item 4)
One 50 Ω, 60 inch precision coaxial cable, male-
to-male SMA connectors (Item 28)
One Pulse Generator (Item 20)
One BNC elbow connector (Item 24)
One SMA "T", male to two SMA female
connectors (Item 22)
One SMA female to BNC male connector (Item
23)
One SMA termination connector, short circuit,
(Item 25)
One SMA male-to-female BNC adapter
(Item 17)
(See Prerequisites on page 116.)
This procedure checks the "sample rate" portion of the Delta Time Measurement
Accuracy as listed in Specifications. The previous procedure, that checks the
reference, (See Check timebase and delay time accuracy and reference on
page 242) verified the "PPM" portion of the delta time specification.
Figure 29: Delta time accuracy test hookup, <4 GHz models
1. Install the test hookup and preset the instrument controls:
a. Initialize the instrument: Press the Default Setup button.
b. Hook up the pulse generator:
■
<4 GHz models: Touch Vertical, select Vertical Setup, and then
touch Termination 50 Ω.
■
Connect the pulse generator output to a 50Ω precision coaxial cable
followed by a 90° right-angle female to male SMA adapter. The
adapter is connected to one side of the female SMA T connector. The
other side of the SMA T is connected to a 60 inch 50 Ω coaxial
Performance verification (MSO/DPO70000C, MSO/DPO70000DX, and DPO7000C series)
246 MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series
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