Model 7620U Bench Scale User’s Manual
12
Diagnostics Mode
Diagnostic (DIAG) Mode
The Diagnostic
(DIAG)
mode menu lets you test
specific areas of the scale’s function.
These areas are:
Display (DISPLAY)
– Shows the version and
revision of the software, followed by a display
segment test.
RAM (RA)
– Performs a nondestructive test of
RAM in the processor. Displays
“PASS”
or
“FAIL.”
ROM (RO)
– Performs a checksum of all loca-
tions in ROM in the processor. Displays
“PASS”
or
“FAIL.”
Input/Output (I-O)
– Data is output by the scale
and through the use of a loopback connector the
data is immediately read back into the receive
channel and verified against what was sent.
“PASS”
or
“FAIL”
is displayed. Requires a
jumper (short) between transmit and receive data
lines.
Division, test w/AZT (DIV-A)
– Weight data is
normalized to 1,000,000 counts of displayed
resolution. AZT is enabled (Auto Zero Tracking).
Division, test w/o / AZT (DIV-N)
– Weight data
is normalized to 1,000,000 counts of displayed
resolution. AZT is disabled.
Raw Counts (RA CNTS) –
Non-normalized QDT
cell data (no zero tracking).
