Test Mode - Rice Lake IQ plus 350 Installation Manual

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
TEST A/DTST
ZERO
ADOFFS ADGAIN
AOUT=0 AOUTFS
Figure 7-5. Test Menu
GROSS
TARE
NET
B/N
TEST MODE KEY FUNCTIONS
Figure 7-6. Front Panel Key Functions in Test Mode
To enter test mode, press and hold the setup switch
until the front panel display shows the word
After about three seconds, the test mode display
automatically shifts to the first test menu function, A/
DTST.
A/D calibration functions, ADOFFS
Caution
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
function. Press the ZERO
Table 7-7 on page 42 summarizes the test menu
functions.
D/I 1
DEFLT
UNITS
Units
TEST
( ) key has no
( ) key to exit test mode.
D/I 2
XMT U
ECHO R
PRINT
Appendix
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