Symbol PTC-870IM User Manual page 25

Figure 1. The PTC-870IM (front view)
1. Power LED
2. On/Off button
3. Keyboard latches
4. Keyboard bracket
1. This green light-emitting diode (LED) indicates the status of the PTC. Refer to
2. This button turns the PTC on or off.
3. Squeezing these two latches together allows the keyboard to be rotated into various positions.
4. This bracket allows an optional keyboard to be attached to the PTC. It also provides a flat surface for the keyboard to rest on.
5. Two types of optional PC/AT keyboards are available for use with the PTC: a QWERTY keyboard and an ABC keyboard. These two keyboards
can be distinguished by the arrangement of their keys. For example, a QWERTY keyboard begins with the letters Q, W, E, R, T, Y, and an ABC
keyboard displays its letters in alphabetical order. The ABC keyboard can be ordered as either a DOS or an emulation (3278 or 5250) keyboard.
Specially sealed keyboards are available for freezer units. Follow the instructions on
the keyboard into a comfortable position.
6. The PTC's standard display screen is a transmissive, VGA-resolution liquid crystal display (LCD) with 640 by 480 lines of resolution and a
built-in backlight to make it readable in dim conditions. An electro-luminescent (EL) panel display screen is available as an option. This screen
does not have a backlight but can be used in temperatures as low as –22 degrees F/–30 degrees C (non-freezer units) or –30 degrees F/–34
degrees C (freezer units). An optional touch panel, which allows you to select menu options by touching the PTC's screen, is available for both
display types. Freezer units, which use an EL panel display screen, have a built-in heater that automatically keeps frost and condensation off
the screen.
The screen displays data entered into the PTC and may show prompts, error messages, and other information.
7. Pressing this button decreases screen contrast in steps until it reaches minimum contrast. This button is not operable on PTCs with EL panel
screens.
8. Pressing this button increases screen contrast in steps until it reaches maximum contrast. This button is not operable on PTCs with EL panel
screens.
8. Increase Contrast button
7. Decrease Contrast button
6. Display screen
5. Keyboard
page 43 for an explanation of the LED codes.
page 31 to connect the keyboard to the PTC and to rotate
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