Rice Lake IQ plus 350, Руководство по установке

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Appendix 41
7.8 Test Mode
In addition to normal and setup modes, test mode
provides a number of diagnostic functions for the IQ
plus 350, including:
• Display raw A/D count
• Display digital input states
• Reset configuration parameters to default
values
• Transmit test character (“U”) from serial port
• Display characters received by serial port
• Set analog output state to zero or full scale
• Set A/D offset and gain calibration
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.
A/D calibration functions, ADOFFS
and ADGAIN, must be used only by
qualified service personnel, and only
after replacing A/D converter components. Improper A/D
calibration may render the indicator unusable.
Figure 7-5 shows the Test Menu structure; Figure 7-6
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 7-7 on page 42 summarizes the test menu
functions.
Figure 7-5. Test Menu
Figure 7-6. Front Panel Key Functions in Test Mode
Caution
A/DTST ADOFFS ADGAIN TEST D/I 1
D/I 2
AOUT=0 AOUTFS DEFLT XMT U
ECHO R
ZERO GROSS
NET
TARE UNITS PRINT
B/N
Units
Move LEFT
Move RIGHT EXIT
not used
ENTER
TEST MODE KEY FUNCTIONS