5
The top line of the
READY
display is
used to display data collection infor-
mation such as
Test 0: RUNNING
,
indicating that the HERMIT 2000 is recording data for test 0.
The
READY
display may show a combination of the various indica-
tors; however, the
READY
still indicates that the HERMIT 2000 is
ready for a program or control key.
Note:
The displays shown throughout the operator’s manual are
presented as though the HERMIT 2000 were operating on its inter-
nal battery pack; however, you may wish to use external power dur-
ing your training sessions.
System Self-Test
You can check the operational integrity and
the configuration of the HERMIT 2000 by
pressing the
SELF TEST
key.
SELF TEST
causes the instrument to run through an electronic check
of all internal components, including program memory, data stor-
age memory, and the display. The self-test operation does not affect
the contents of test data stored in memory.
Press and release any key on the key-
board to wake the instrument and get
the
READY
display.
Press the
SELF TEST
key. First, the
display is checked by turning on ev-
ery display element.
The instrument then tests its pro-
gram ROMs (read-only memory
containing the instrument’s person-
ality) . . .
. . .then its RAM (random-access
memory used as a scratchpad for
computing results) . . .
. . . and its data storage memory
(used to store the configurations and
results of your tests).
The HERMIT 2000 then reports the
number of watchdog occurrences
and the most recent error code gen-
erated.
The watchdog is an internal electronic circuit that resets the HER-
MIT 2000 when normal operation is upset by nearby lightning strikes,
static discharges, and other similar types of electrical surges. Ideally
the number of recorded watchdogs will remain zero; however, occa-
sional watchdogs associated with storm events can be considered
normal. Unusually high or frequent watchdogs may indicate a mal-
function. Appendix D contains a list of watchdog error codes.
The final self-test display identifies the HERMIT 2000’s configura-
tion and all installed options:
If
FAIL
is indicated at any point in the self-test sequence, or a high
number of watchdogs are recorded, the instrument may require ser-
vice. See Appendix B for information on how to obtain repair ser-
vice.
Note:
If the HERMIT 2000 is recording data, an abbreviated form of
the self-test is performed. After testing the display, the sequence will
skip to the watchdog count. This allows the instrument to respond
quickly to preprogrammed delayed starts and data point time inter-
vals.
The non-volatile data storage used in the HERMIT 2000 has a limit
to the number of times that data can be written to it, referred to as
the memory “endurance.” The self-test configuration display indi-
cates the amount of memory endurance remaining. Your HERMIT
2000 is shipped with 100%. Typically, over 700,000 data points can
be stored before “wearing out” the memory and reaching 0%.
Press the
CLEAR
key to return to the
READY
display.
Using Your HERMIT 2000
Let’s try a simple data collection problem to get the feel of your HER-
MIT 2000. For the examples illustrated here, it will not be necessary
to connect a transducer to the instrument. If the HERMIT 2000 hap-
pens to fall asleep while you are working through the problem, you
will have to wake it up and repeat the section you were on from the
beginning. If you make an entry error while keying in the example,
just use the
CLEAR
key to back up.
For our example, we will record pressure for a few minutes using a
standard In-Situ pressure transducer.
Section 2: Getting Started
Test 0: RUNNING
READY
(ext pwr)
READY
❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚
❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚
SE2000 V3.4 2K-01250
PROGRAM ROMS...PASS
SE2000 V3.4 2K-01250
RAM TEST...
PASS
SE2000 V3.4 2K-01250
STORAGE TEST... PASS
SE2000 V3.4 2K-01250
WATCHDOGS:
0/00
SE2000 V3.4 2K-01250
32K-8
100% PASS
Version Number
Model Number
Serial Number
Data Storage Size
Number of Inputs
Self-Test Results
Remaining Storage Endurance
SELF
TEST
CLEAR
