Preparing the Extension Unit for Use
R&S
®
ZVAX-TRM
24
User Manual 1325.1268.02 ─ 04
3.4.9 Standby and Ready State
Shock hazard
The unit is still power-supplied while it is in standby mode.
The standby key connects/disconnects all internal modules of the extension unit to/
from the DC supply voltage generated by its internal power supply.
●
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.
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
ZVAX-TRM while the R&S
ZVA net-
work 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.
3.5 Maintenance
The R&S
ZVAX-TRM 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, lint-free dust cloth.
Instrument damage caused by cleaning agents
Cleaning agents contain substances that may damage the instrument. For example,
cleaning agents that contain a solvent may damage the front panel labeling, plastic
parts, or the display.
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
