7.3.3 Key assignments
Eight keys are available for operating the ULTRAMAT 23. These keys have the following
meanings:
N
o.
Designa‐
tion
De‐
scrip‐
tion
Function
1
*
MEAS Meas‐
ure
Measure; abort input operations;
leave input mode (from any menu level);
switch from input mode to measuring mode and
code analyzer again
2 CAL AUTO‐
CAL
Automatic calibration and subsequent adjustment: activation of calibration
with ambient air or nitrogen
3
*
PUMP Pump Switch internal sample gas pump on/o
4 ESC Escape In input mode: go back one menu level or cancel current input or cancel
AUTOCAL or cancel an adjustment*
5 ↑ Up ar‐
row
Increase selected digit;
select previous menu item
6 ↓ Down
arrow
Reduce selected digit;
select next menu item
7 → Right ar‐
row
Move input cursor by one position to right (cyclic, i.e. the cursor is set to the
left edge when the right edge has been reached)
8 ENTER Enter In measuring mode: switch over to input mode;
in input mode: import entered parameters or
call a menu item
* The input is suppressed if certain conditions are fullled.
A corresponding message is then output briey on the display.
You can use the arrow keys to modify numerical values by increasing or decreasing the digit at
which the cursor is located. The digits are modied continuously, i.e. 0 follows again after digit 9.
You can also decrement to 9, 8... following digit 0. On numerical inputs outside the valid range,
the device reacts outputting the value FFF...
Use of the <MEAS>, <ESC>, and <ENTER> keys is described using examples in section Key
operations step by step (Page 96) . Use of the <CAL> key is described in section The CAL key
(Page 99), use of the <PUMP> key in section The PUMP key (Page 100).
7.4 Operating modes
During operation, the analyzer is always in one of following operating modes:
• In the warm-up phase (see section Warm-up phase (Page 93))
• In measuring mode (see section Measuring mode (Page 94))
• In input mode (see section Input mode (Page 95))
Operation
7.4 Operating modes
ULTRAMAT 23
92 Equipment Manual, 04/2022, A5E37100388-012