R&S ZVAX24, Быстрый старт, Страница: 19 / 30

Preparing the Extension Unit for Use
R&S
®
ZVAX24
19 Quick Start Guide 1312.7985.62 ─ 03
●
In standby state (yellow LED on) the power consumption of the unit is very small,
however, the internal power supply is still connected to the AC mains power as long
as the mains power switch at the rear panel is on.
●
In ready state (green LED on) all modules are power-supplied and the unit can be
used as described in
chapter 3, "Pulse Profile Measurement" , on page 21.
It is recommendable to switch the extension unit to standby state or switch it off by the
rear panel AC power switch if it is not used for some time.
Switching on the instruments
Switching on the connected extension unit while the network analyzer is booting can
cause problems. It is safe to switch on the R&S
ZVAX24 while the R&S ZVA network
analyzer is off or in standby mode, or after it has completed its startup procedure. You
can also switch on both instruments before you connect the USB control cable.
Shock hazard
The unit is still power-supplied while it is in standby mode.
2.3.9 Replacing Fuses
The mains connector at the rear panel is protected by two fuses IEC127 T3.15 H.
► To replace the fuses carefully open the lid from the left side and remove the red fuse
holder from its shaft. If needed, use a small screwdriver for lifting the fuse holder.
2.4 Maintenance
The R&S ZVAX24 extension unit does not require any special maintenance. Make sure
that the air vents are not obstructed. The outside of the unit is suitably cleaned using a
soft, line-free dust cloth.
Instrument damage caused by cleaning agents
Cleaning agents contain substances that may damage the instrument, e.g. cleaning
agents that contain a solvent may damage the front panel labeling or plastic parts.
Never use cleaning agents such as solvents (thinners, acetone, etc), acids, bases, or
other substances.
The outside of the instrument can be cleaned sufficiently using a soft, lint-free dust cloth.
Maintenance