NARDA NBM-550, Operating Manual

Page: 46 / 156

4 Getting started
36
NBM-550 Narda
The following settings are possible:
•
6/15/30/60 minutes
: Auto zero every 6/15/30/60
minutes
•
off
: Auto zero function disabled
The default setting is
15 minutes
.
Changing the setting
1. Open the
Auto-Zero Interval
function (MAIN/
MEASUREMENT SETTINGS/Next/...).
2. Use the arrow keys
▲
/
▼
to select the desired setting and
then press the
OK
key to confirm the setting.
Starting a zero adjustment manually
1. Open the MAIN menu.
2. Press the
Zero
function key.

A zero adjustment is performed and the instrument fi-
nally changes back to the measurement display.
Setting the auto off function
You can set the instrument to switch off automatically after a
specified time without any activity to protect the batteries
from being discharged.
The following settings are possible:
•
6/15/30/60 minutes
: Switches off after 6/15/30/60
minutes
•
off
: Auto off function disabled
The default setting is
15 minutes
.
Note:
The auto off function is disabled during long-term
measurements using the
Timer Logging
function (see
“Recording measurements by timer control”
on
page 80) and
Conditional Logging
function (see
“Recording conditional measurements (optional)”
on
page 82).
Changing the setting
1. Open the
Auto Power-Off
function (MAIN/
MEASUREMENT SETTINGS/Next/...).
2. Use the arrow keys
▲
/
▼
to select the desired setting and
then press the
OK
key to confirm the setting.