lower menu to a higher menu. In any window, pressing
EXIT
will immediately
exit the window and skip to the next window or return to the menu. If a param-
eter is entered or changed and
EXIT
is pressed before
ENTER
, the change will
be ignored. During some operations the
EXIT
button may be used to cancel or
discontinue with an action or choice. Use
EXIT
when in a lower soft-key menu
to return to the main menu.
U D
The up
U
and down
D
arrow keys are used to move the cursor through a list
of parameters in a window. Note that new data will not be accepted unless
ENTER
is pressed first. Thus these keys can also be used to intentionally can-
cel a change to a parameter. If the list of parameters is too long to be displayed
in the window,
U
and
D
can be used to scroll the list. The user can hold either
of these down to scroll quickly.
L R
The left
L
and right
R
arrow keys have two functions. When entering or ed-
iting a numeric parameter these can be used to move from digit to digit. When
setting some parameters these are used to change the option.
These are the display contrast adjustment buttons. They can be used at any time
to adjust the contrast of the display.
2.2.1.3
Serial RS-232 Interface
The base includes an RS-232 serial interface. The connector is located on the bot-
tom at the rear of the front section of the base. This can be used to connect the 1560
to a printer for a hard copy printout of measurement data or to a computer for re-
mote control.
2.2.1.4
Power Supply
The power supply provides the DC power required for the electronic circuits. It
receives power from the AC mains supply. The AC power socket is located at
the bottom at the rear of the second section of the base. The power supply input
accepts 100 to 250V, 50 to 60 Hz. nominal AC power.
2.2.1.5
Module Bus
The base microprocessor communicates with all add-on modules and devices
through the module bus. The bus is of a proprietary design that is simple, reli-
able, and fast. It transfers data very quickly in an 8-bit parallel format. The
module bus also supplies power to the modules.
1560 Thermometer Readout
User’s Guide
12
