8 test mode – Rice Lake Intrinsically Safe User Manual
Page 61

320IS Installation Manual - Appendix A
55
7.8
Test Mode
In addition to normal and setup modes, test mode provides a number of diagnostic functions for the
320IS
,
including:
•
Display raw A/D count
•
Calibrate A/D offset and gain
•
Display digital input states
•
Reset configuration parameters to default values
•
Transmit test character (“U”) from serial port
•
Display characters received by external serial port
•
Set analog output state to zero or full scale
To enter test mode, press and hold the setup switch until the front panel display shows the word
TEST
. After about
three seconds, the test mode display automatically shifts to the first test menu function, A/DTST.
Figure 7-4 shows the Test Menu structure; Figure 7-5 shows the front panel key functions in test mode. Note that,
because the Test Menu functions are all on a single menu level, the
GROSS/NET
( ) key has no function. Press the
ZERO
( ) key to exit test mode.
Table 7-9 on page 56 summarizes the test menu functions.
Figure 7-4. Test Menu
Figure 7-5. Front Panel Key Functions in Test Mode
A/DTST
TEST
ADCAL-
ADCAL+
D/I 1
D/I 2
D/I 4
D/O 1
D/O 2
D/I 3
D/O 3
D/O 4
A/O 1
A/O 2
DEFLT
XMTEDP
XMTPRN
ECHO R
Exit
Not Used
Enter
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