NARDA nbm-520, Руководство по эксплуатации

Страница: 25 / 64

3.4 Connecting the probe
Narda NBM-520
19
Proper handling of rechargeable batteries
⇒
Observe the following precautions when handling re-
chargeable batteries:
• Always handle the batteries with care.
• Do not drop or damage the batteries or expose them to
excessively high temperatures.
• Do not leave the batteries inside or outside the instrument
for more than one or two days in a very warm place (e.g.
in an automobile).
• Do not leave the discharged batteries in the unused
instrument for a long period of time.
• Do not store the batteries for more than six months without
discharging and recharging them in the meantime.
• Avoid deep discharging the batteries as this could cause
the cells to reverse polarity and make them useless.
3.4 Connecting the probe
There are many different probes available for different appli-
cations for the NBM-520. You can find more information
about the order numbers and specifications of the probes
under
Ordering information
on page 51, as well as in the
WARNING
Probe is not operating properly
Possibly present high radiation values can not be rec-
ognized when a probe is defective.
⇒
Check probes for proper operation with a signal source
before using this measuring instrument. This is espe-
cially important for thermocouples because the sen-
sors can be affected by various mechanical and
environmental stressors.
Narda offers portable sources to accomplish this im-
portant step (see
Accessories
on page 53).
⇒
Before beginning any RF radiation measurement, al-
ways advise yourself of the frequencies and field
strengths that you could expect to encounter.