Anritsu Network Master MT9090A Series, Operation Manual, Page: 66 / 200

2-26 MT9090A/MU909011A Network Master User’s Guide
8. Tighten the captive fastener.
9. Replace the battery pack or AA Ni-MH batteries, if
removed in step 2.
10. Replace the battery compartment cover.
Basic Notes on Use
CAUTION
!
1. Measurement port cover
The Measurement port cover prevents dust and other
contaminates from collecting on the measurement
port. Keep this cover closed except when a cable is
connected.
2. Condensation
Condensation may occur on the inside surface of the
unit when it is carried into a room (high temperature)
from an outdoor location (low temperature), etc. If this
occurs, dry the unit thoroughly before turning on the
power.
3. Temperature range
Use the unit within the operating temperature range

(0 to +50°C) and storage temperature range (-20 to
+60°C). If the unit is placed in a car or other enclosed
space for a long time, the ambient temperature may
exceed the specified range, resulting in malfunction of
the unit.