Rohde & Schwarz RT-ZF20, User Manual

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Using the Power Deskew Fixture
R&S
®
RT-ZF20
11 User Manual 1800.0040.02 ─ 02
4. Set the vertical scale for the input channel of the voltage probe, e.g. CH2:
● Large loop: 1 V/div
● Small loop: 500 mV/div
5. Set the horizontal scale (see table 2-1 ):
● Large loop: 100 ns/div (for probes <20 MHz)
● Small loop, rising edge: 20 ns/div (for probes <200 MHz)
● Small loop, falling edge: 1 ns/div (for fast probes)
6. Set up the trigger:
a) Source = channel of the voltage probe, e.g. CH2
b) Trigger type = Edge
c) Slope = Rising or falling edge, see
table 2-1
d) Level = 1 V
2.3 Connecting Probes to the Fixture
Both probes have to be connected to the same loop using the accessories
required for the measurement application.
Basic connection rules
Deskew only probes connected to the same section. Never deskew a probe
connected to the large loop section and a probe connected to the small loop
section.
To achieve accurate measurement results, you have to ensure identical
conditions for deskewing and measurement. Use the accessories required
for the measurement application also for deskewing the probe.
If you use probes with a compensation trimmer, e.g., R&S
RT-ZP or
R&S RT-ZH models, make sure to compensate the probe before deskew-
ing.
1. If you use a R&S RT-ZC10/20 current probe, connect a R&S RT-ZC20 to the
small loop, or a R&S RT-ZC10 to the large loop cutout.
2. If you use a Rohde & Schwarz active single-ended voltage probe, e.g.
R&S RT-ZS10/10E/20/30/60 or R&S RT-ZZ80:
Connecting Probes to the Fixture