－１１３－
19. HARDWARE CHECK 19.4 Measuring Input Check The measuring input can be checked by counts after A/D conversion.
■ Check Flow Chart
Operation screen
[Engineering mode selection]
（
＋ ）
3 sec. or more
[Selecting check ]
→
[Selecting measuring input]
[Displaying check]
[Displaying count: 1]
[Displaying count 2]
: Memory clear
: Adjustment
: Hardware check
(1) ROM version check
(2) Printer check
(3) Display check
(4) Measuring input check
CH1 to CH4 show the counts after A/D
conversion of inputs to channels 1 to
4.
For RD2800, the RJ (reference
junction compensation) count is
displayed next to CH4.
RJ is the counts after A/D conversion
of the reference junction
compensation (RJ). RD2800 has no
Count 2 display as RJ is displayed in
Count 1 display. RJ is displayed only
when there is a channel, of which RJ
is programmed to “1: enable” in the
range programming. When all
channels are programmed to “0:
disable”, (- - - -) is displayed.
2 sec. or more
Cursor Check
Cursor
Cursor
Ch1 Ch2 Ch3 Ch4
RJ
DISP
SHIFT
6
A – Z
°
C
°
F
ENTR
Y
°C
°
F
ENTRY
ENTRY
%
/
DISP
Engineering mode types
Reference 1
Types of check 1
Reference 2
Count 1 display
Reference 3
Count 2 display
Reference 4
Ref. 1
Ref. 2
Ref. 3
Ref. 4
(1) (2) (3) (4)