4.3 Displaying the instrument settings
Narda NBM-520 27
AUTO-ZERO This value determines how often automatic zeroing is per-
formed.
The following settings are possible:
• 6 minutes: auto zero every 6 minutes
• 15 minutes: auto zero every 15 minutes
• 30 minutes: auto zero every 30 minutes
• 60 minutes: auto zero every 60 minutes
• off: auto zero function disabled
The default setting is 15 minutes.
AUTO-OFF To prevent discharging the batteries unnecessarily, the
instrument can be switched off automatically after a speci-
fied time without activity. This time is set by the
AUTO-OFF value.
The following settings are possible:
• 6 minutes: auto off after 6 minutes
• 15 minutes: auto off after 15 minutes
• 30 minutes: auto off after 30 minutes
• 60 minutes: auto off after 60 minutes
• off: auto off function disabled
The default setting is 15 minutes.
BACKLIGHT The display backlight is activated each time you press a but-
ton and switches off after a specified time to prevent dis-
charging the batteries unnecessarily. This time is set by the
BACKLIGHT value.
The following settings are possible:
• off: backlight is switched off permanently
• 5 s: auto off after 5 seconds
• 10 s: auto off after 10 seconds
• 30 s: auto off after 30 seconds
• 60 s: auto off after 60 seconds
• permanent: backlight is switched on permanently
The default setting is 10 seconds.
AVG TIME This value specifies the time period over which the results
are averaged.
You can use the PC software to set this time period between
4 s and 30 min in steps of 2 s.
The default setting is 6 minutes.
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