Model 702i and 711i
Technical Manual
Section 3
Ludlum Measurements, Inc.
3-2
December 2018
Do not
remove the CompactFlash card while the system is turned on. The system will not continue
to operate without the card in place. It is best to turn the unit off, remove the card, perform
whatever activities are needed, and reinsert the card before turning the unit back on. Also, it is
important to note that this card is
specific to your unit and detector
. In fact, the serial number of
the electronics and detector is printed on your particular CompactFlash card. Because each unit is
factory calibrated for optimal performance, and this calibration is stored on the CompactFlash card,
the cards should never be exchanged between different units. Also, the contents of the card should
not be erased, except through the menus provided in the unit itself.
You may wish to read the saved spectral information on the card using your PC. If your PC
includes a media reader bay, you should be able to insert the card and read it as simply as you would
access a CD-ROM or floppy. If your PC does not have a media reader built in, a simple USB flash
card reader can be easily purchased from a commercial supplier. In either case, the device will be
assigned a drive letter, often E: or F: (we will assume E: throughout this document). The spectra
may then be read from the directory E:\spectra.
Batteries
Your Model 702i and 711i unit comes equipped with eight internal rechargeable AA batteries.
These batteries are normally charged by plugging in the external charger. Access to the battery
compartment requires removal of the lower enclosure.
Depending on usage, the Model 702i and 711i unit will generally run six to eight hours on a single
charge when the recommended batteries are used. There are several ways to improve your battery
life:
Reduce the display brightness as low as possible without affecting your ability to read the
display. If operating out-of-doors, you may find that the reflected sunlight is sufficient to
read the display even with the brightness at its minimum setting.
Turn off the
Audible Count Rate
and/or
Mute
the speaker.
Shorten the
Backlight Timeout
so the display darkens when you are not using the system.
Use AC power when connecting to a PC or doing other stationary operations in the office.
The unit will automatically run from AC power if it is available.
