Display Overview VFC400-USB User Guide 23
CH1/CH2 Channel Identifiers *
CH1 is shown when the data on the screen is representing data from the probe plugged
into the socket marked CH1. Similarly, CH2 is shown for channel 2 data.
Backup Battery Low
A battery test is performed periodically. The battery low symbol will appear if the VFC400-
USB's backup battery is low and requires changing. Please discuss this with your distributor, as
the battery needs to be changed by a qualified technician.
Main Battery Condition
A battery test is performed periodically. Depending on the condition of the battery, all, some or
none of the 4 bars will show. See Powering the VFC400-USB on page25 for details.
ALARM/OK indicator *
The symbol is shown as soon as the VFC400-USB has registered an alarm event.While there
are no alarms, or if a previous alarm has been cleared, the symbol is shown.
Recording indicators
The recording indicators show what the VFC400-USB is currently recording.
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If READY is shown, the VFC400-USB is ready to be started with the START/CLEAR/STOP button.
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If is shown, the VFC400-USB is recording temperature at the sample interval defined.
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If the word STOPPED is shown, the VFC400-USB has finished recording temperature data.
Time Value and Time Indicators
The time value display is used to show one of the following:
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The current time
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The time remaining until the logger starts recording (for a delayed start)
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A duration, for example of an alarm
The time indicators identify which of those is displayed as follows:
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If TIME is shown, the time value represents the current time in hours and minutes (24- hour
format).
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If DELAY is shown, the time value represents a start delay, or the time remaining until a
date/time start will occur.
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If DURATION is shown, the time value represents the duration, for example the time above
the upper alarm limit.
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If CLOCKADJ is shown, the time value represents the current time (blinking), which can be
adjusted using the keys.
The word boot appears in place of the clock if new firmware is being uploaded to the VFC400-USB.
The word dtstappears in place of a time value if the logger is configured for a date/time start, and
the start time has not yet passed.
Reading Type
The word CURRENT is shown when the temperature on the display represents the last recorded
temperature.
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