Hach DR2400, Manual

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Troubleshooting and FAQs
5940018Troubleshoot.fm
Page 55
Section 10 Troubleshooting and FAQs
10.1 Troubleshooting
(See http://www.hach.com for the latest information.)
10.1.1 Instrument Information
To see the serial number and software version number:
1. Touch
System Checks
on the Main Menu.
2. Touch
Instrument Information
. The serial number and software version
number will appear.
10.1.2 Wavelength Check
To perform a wavelength check:
1. Touch
System Checks
on the main menu.
2. Touch
Wavelength Check
.
3. Touch
Read
.
The instrument will perform a wavelength check. The displayed wavelength
should read 446 ±1 nm.
Note: If the displayed wavelength is outside of this range, turn the instrument off then on. Allow it to
run through the automatic wavelength calibration. Repeat steps 1–3. If the displayed
wavelength is still outside the expected range, contact Hach technical support. See Repair
Service on page 63 for contact information.
10.2 Frequently Asked Questions
Does the DR/2400 Portable Spectrophotometer factor in sample dilutions?
Yes, this is available in the options menu. See Section 3.5.3 Correcting for a Diluted
Sample .
I have large fingers. Can I still use the touchscreen? Yes, you can still use the
touch screen very easily. You may want to use the tip of your fingernail, the non-
writing end of a pen, or a stylus instead of your fingertip.
Is the Hach RS232 cable necessary for downloading information to a computer
or can I purchase a generic 9-pin/9-pin cable from an electronics store?
The
Hach cable is specifically configured for the DR/2400 instrument. However, you
may substitute a 9-pin/9-pin, null-modem cable with female connectors on both
ends.
What does it mean when something is “highlighted”? When selecting an item
from a list, whether it is a program, a data point, or a setup option, there is
always one item that is shown in light text on a dark background. The current
selection is the “highlighted” item. When you move the scroll bar or press the up
and down arrow keys, the highlight moves. Also, in graph views, highlighted
text corresponds to data at the cursor location.
What is meant by the term “reading modes”? The DR/2400 software includes
the following types of measurements, which are all reading modes: Hach
Programs, User Programs, and Single Wavelength analysis.