5 HYDRAN 201TI DISPLAYS & MENUS
Note: It is recommended to use the Hydran Host software rather than the H201Ti’s user
interface (keypad and display). See the Hydran Host Software Manual.
All parameters and commands that can be accessed with the H201Ti’s user interface
can also be accessed with the Hydran Host software, except for the analog
inputs/outputs calibration and the communication parameters. The first power-up (see
Section 5.2.5) must also be performed using the H201Ti’s keypad.
5.1 User Interface
The Hydran 201Ti’s user interface is located on the front of the CPU module (item 4 in
Figure 3-2 in section 3). It consists of the following (see Figure 5-1 below):
Figure 5-1: Hydran 201Ti's User Interface
• An alphanumeric LCD display, consisting of two lines of 16 characters. It requires
no manual contrast adjustment and is equipped with temperature compensation.
When the H201Ti is closed, the display remains visible through a window in the
aluminum cover.
Note: Make a shadow over the display and observe the backlighting. Although it appears
dim in daylight, the backlight allows easy reading of the display at night. The contrast of
this thermally-compensated display is set automatically; it can thus operate over the full
temperature range of the H201Ti and is perfectly readable under all ambient lighting
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