Instrument tour
R&S
®
ZCxxx
15
Getting Started 1177.5156.02 ─ 05
Figure 4-3: Angled hex ball driver R&S
ZCAW (accessory)
For precision calibrations and measurements, use the inner dowels at the test
port adapter. A tight and accurate connection is important to ensure precise mea-
surement results.
For a two- or n-port measurement, setup converters and DUT have to be aligned
accurately, using the adjustable instrument feet. Use a bubble level for proper
alignment.
4.2
Output power-adjusting knob
The knurled knob steeped in the upper surface of the converter housing
adjusts an integrated variable mechanical attenuator that allows you to
control the output power at the waveguide test port manually. Such an
attenuator is available for all R&S
ZCxxx converters, except the R&S
ZC90,
R&S
ZC90E, R&S
ZC110 and RPG
ZC1100.
Turning the knob clockwise reduces the output power while turning it counter-
clockwise increases the output power. The minimum power is reached at the stop
in clockwise direction while maximum power is reached at the stop in counter-
clockwise direction. The knob cannot be turned so far in counter-clockwise sense
that it protrudes the upper surface of the R&S
ZCxxx. So there is no danger that
the mechanism of the variable attenuator is damaged when the frequency con-
Output power-adjusting knob
