Ashcroft ATE-100 Handheld LCD Digital Calibrator - Manual (Page 47)

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Revision 4.6 3/2004
the L+R indication will be not be present on the display.
The display is limited to 16 characters/line and cannot
display both the L+R and a U_XXXXXX engineering
unit label.
Section 22.0 Data Logging Function (Optional)
There are two basic ways to perform data logging with
the HHC system. These are
• sequentially ungrouped storage
• grouped for certification generation
of an instrument under test.
Sequential data logging is detailed in this section (Sec-
tion 22.1) of this manual.
Data logging with the enhanced certification generation
data logging is detailed in Section 23 of this manual.
Note: Base units equipped with optional data logging
include a lithium battery to back up the Random Access
Memory (RAM) used to store data logged values. If the
battery voltage is low the following message will appear
on the DATA LOG key pressed.
Data Log Backup
Battery is Low
When this message appears on the display the battery
should be replaced as soon as possible. Consult Section
24.2 for details on battery replacement. Acceptable bat-
teries are listed in section 24.2.
Section 22.1 Sequential Data Logging Function
(Optional)
The sequential data logging function provides three means
of capturing and storing measurement data. These are:
• automatically at a defined time interval
• automatically with delayed start
• manually at the push of the data store key
In the automatic data logging mode, data logging can
be programmed to occur at a time interval of from 0.1
to 65,000 seconds. The manual mode of data logging
allows storage of the displayed measurement data at the
push of a key.
In the sequential data logging mode the HHC has the
capacity to store a maximum of 714 data sets with the
time/date stamp function disabled. If the time date stamp
is enabled the HHC system data logging memory can
store a maximum of 387 data sets. Each data set includes
the following; the record number, the measured value
and the engineering units of the measurement value. If
the time/date stamp is enabled the time (hours/minutes/
seconds) and date (Year/Month/Day) are included with
the logged measurement data.
When used in conjunction with the Event Timer function
(see Section 24) the HHC system can be set up to take
data during a selected future time period at an operator
programmed time interval. For example, the combina-
tion of data logging and event timer provides the ability
to set up the HHC system to take pressure measurements
from 9:00 PM to 11:00 PM at a timed interval of one
data set every 10 seconds, without operator intervention.
Section 22.2 Setting up the Data Logging
Function (Optional)
The setup menu for the data logging function is accessed
through a dedicated key on the keypad of the HHC
system. This key has the designation DATA LOG. Press-
ing the data log key provides access to the complete data
logging set up menu.
DATA
LOG
When the data log key is pressed the HHC system will
respond with one of two prompt screens. If the unit is
not equipped with the certification generation enhance-
ment the calibrator will display:
Line 1
Auto Manual
Line 2
Review Off
Line 3
Label Erase
If the HHC system is equipped with the certification gen-
eration data logging enhancement the response will be:
Select Mode
Std CertGen
To perform “standard” sequential manual or time based
data logging highlight the text “Std” and with it flashing
on the display press the enter key.
ENT
To access the certification generation capability of the
HHC, using the right pointing arrow key highlight the
text CertGen and with it flashing press the enter key.
ENT
The up/down and left/right arrows can be used to choose
the desired selection from the data log set up menu.
Information on the function of each of the above menu
options follows.
Proceed to Section 23 of this manual for details on
the certification generation mode of data logging.
Proceed through the balance of Section 22 for details
on the use of the capabilities provided by the standard
sequential data logging operation mode.