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Operation
Contrast
Set the contrast to any number from 0 (lightest) to 40 (darkest). Typically, a setting of 20 to 25
will be adequate for most situations.
Backlight Bright
Set the backlight to any number from 0 (backlight off) to 100 (brightest). Typically, a setting of
45 to 55 is best for viewing.
Backlight Mode
There are three choices for the backlight mode: ON where the backlight is always on, OFF where
the backlight is always off, and TIMED for which there are four settings under BACKLIGHT TIME.
Backlight Time
When BACKLIGHT MODE is set to TIMED, the user has four choices for the time duration of the
backlight: 30 SECONDS, 1 MINUTE, 2 MINUTES, and 5 MINUTES. Once the front-panel controls
have been inactive for the set time, the backlight will extinguish. Any front-panel activity will
restart the time. Pressing the ESC key will restart the time without changing any front-panel
settings.
Remote Menu
(See
Section VI
for Remote Operation)
The Model 1140A can have up to three interface cards installed at any one time, including the
built-in USB. The REMOTE MENU tells the user what interfaces, if any, are installed and which
one is active; and it allows the user to set the instrument's remote address.
Model 1120 Remote Emulation
When the Model 1120 Remote Emulation option is installed, the fourth and fifth menu items will
appear. Line four allows the user to ENABLE or DISABLE the Model 1120 Remote Emulation
mode. When Model 1120 Remote Emulation is enabled, the annunciator 1120 MODE will appear
at the upper middle of the display. In this mode, the Model 1140A will only accept remote
commands that are formatted in accordance with the Model 1120 remote command set. See
Section
VI. The fifth line allows the user to designate the thermocouple type that will be the
"asterisk" type. The Model 1120 holds eight different thermocouple modules, and there are
dedicated front-panel keys for seven of them: Types E, J, K, T, S, R, and B. The eighth slot can
be either Type N, Type C, or Type Platinel II. This was designated on the display screen of the
REMOTE MENU
ACTIVE INTERFACE: USB
GPIB SETUP
ETHERNET SETUP
1120 EMULATION MODE: ENABLED
1120 ASTERISK TC TYPE: N-MN175
Figure 4-11: Remote Menu
4-18
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