User guide
DTP34 DENSITOMETER
5
Instrument LED Indicator
The LED indicates a variety of instrument operation conditions, such as calibration mode, and operation. Below is a
complete list of all conditions reported by the LED.
Operation Mode
• Solid Green—self-test passed and instrument is ready for use with defined strip.
• Slow Flashing Green—strip reading in progress or waiting to read a strip.
• Fast Flashing Green—strip reading was attempted but the wrong strip was read, or strip was skewed during
reading.
• Flashing Amber/Green—a configuration barcode was scanned and the instrument is waiting for the 2
nd
or 3
rd
barcode pass.
• Fast Flashing Amber/Green—there was an error in recognizing a barcode or the configuration failed. Reread
the entire barcode, starting with the first pass.
Calibration Mode
• Solid Amber—calibration is required before any measurements can be taken.
• Slow Flashing Amber—instrument calibration in progress (strip being read).
• Solid Green after Amber—instrument calibration was successful and instrument is ready for use.
Error/Reset Mode
NOTE: When the instrument is first turned on the LED will be red while it performs its self-tests. The self-
tests will complete in approximately 2 to 3 seconds, at which time it will turn green under normal
conditions.
• Fast Flashing Red—incorrect power supply attached. Verify correct 12-volt power supply is used.
• Slow Flashing Red—a factory reset is in progress.
• Flashing Red/Green— the host firmware loader program is reprogramming the instrument.