B&K 2250 Light, Руководство пользователя

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CHAPTER 8
Advanced Use of 2250 Light – Tips and Tricks
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8.6.2 GPS Receivers
The analyzer can be connected to the following GPS receivers:
• GPS Receiver ZZ-0249 – for measurement of latitude, longitude, altitude and position error
Please refer to the user manual for Noise Monitoring Terminal Type 3639-A, B and C
(BE 1818) for details on how to mount and connect the GPS receiver using Utility Unit
ZH-0689.
• ND-100S GPS USB Dongle from Globalsat (www.globalsat.com.tw) – for measurement
of latitude, longitude and altitude
• BU-353 Cable GPS with USB Interface from Globalsat – for measurement of latitude,
longitude and altitude
The GPS receivers with USB interface can be connected directly to the USB port on analyzers
with hardware version 4. On hardware versions 1 – 3, the GPS receivers can be connected
using USB Adaptor AO-0657.
After connecting the GPS receiver, you can verify the connection by displaying the
instantaneous updated parameters
Latitude and Longitude from the Env. Inst. group.
If a GPS receiver is connected when data is saved in a project, a GPS note is automatically
created as an annotation with the GPS information.
See more details on GPS notes in section 3.4.
8.7 Timers and Automatic Measurements
Automatic control of the analyzer is available via one or more of the analyzer’s timers (up to
ten).
The purpose of a timer is to initiate measurements in the absence of an operator. Basically, a
timer will:
• Switch on the analyzer at a preset time
• Load a preselected template
• Start a measurement as specified in the template
• Stop the measurement after a preset time defined by the Timer Setup
• Save the measurement
• Switch the analyzer off
• Repeat the above a preset number of times at preset intervals
For a timer to work, the analyzer must be in the ‘switched off’ state.
A timer will never interrupt the analyzer if it is already in use manually. If a switch-on time is
during the time the analyzer is in use, the timer opportunity is lost.
You can control the analyzer during a timer-initiated measurement as long as this does not
affect the measurements. If you try to change any parameters affecting the measurement you
will be warned of this. If you persist, the analyzer will revert to manual control and timer
control cannot be resumed.