Spartan 821/721 Manual
System Settings
25
3.3 System Settings
FIGURE 3-2
System Card
•
DC Out Enable
When DC Out is enabled, the meter continuously directs the voltage equivalent
of the microphone input signal to the meter’s Audio/DC Output on the bottom
of the meter. By connecting the cable CBL139 to this port, it’s possible to output
the current signal voltage from the BNC connector to a multimeter or other
device.
The sensitivity of the DC Output is 10 mV/dB with 1 V equivalent to 100 dB re 20
µPa.
The DC Output signal follows your selected
Exceedance Frequency Weighting
and
Exceedance Detector
. To verify or edit these settings on the meter, expand
the
Exceedances
card from the
Tools
Settings
screen.
Calibrating and Adjusting DC Output
a.
Go to
Tools
System Utilities
.
b.
Select
Calibrate DC Out
.
c.
Press
Begin Calibration
to initiate. The meter will output 1V DC. Measure the
output with a Digital Multi-Meter (DMM) and adjust the offset value until reading
is equal to 1V.
d.
Close the popup any time to cancel.
•
Device Name
Included in the summary page of the data file
view.
•
Device Desc.
A description of the device that is included in the
summary page of the data file. You can only edit
it in G4 or LD Atlas.
•
Passcode
This code restricts access in G4 and LD Atlas
when connecting over BLE so that users cannot
tamper with the meter settings. You may use this
in conjunction with the meter Lock to further
protect your meter and data. The code can be up
to 8 digits (0-9). Leaving this blank means no
passcode.
•
LED Status Light
Enable or disable the status led on the meter.
•
Auto Off (30 min)
When the meter is not taking a measurement
and Auto Off is enabled, then the meter will
power off automatically after 30 minutes, except
when charging.
