American Dynamics AD1981 Especificaciones descargar pdf (Pagina 17)

2-8 AD2079 Operator's Manual

Key Functionality Test

This test performs a visual and audible check of keyboard key actions. When the test is started,

each of the keyboard LED display sections shows a number representing the number of keys in that

section of the keyboard. The numbers displayed are as follows:

Display Section Number of Keys

SITE 4

MONITOR 4

CAMERA 8

ENTER 22

Note: the count in the ENTER display includes the keys in the ENTER, DUAL FUNCTION, and

CONTROL sections of the keyboard, as well as the “flip” button on the joystick.

To verify proper operation, each key on the AD2079 keyboard must be pressed once. The keys can

be pressed in any order. When a key is pressed,

• An audible tone is sounded, verifying key recognition by the keyboard's microprocessor.

• The number in the associated display decrements by one. Pressing the same key multiple times

will not decrement the count by more than one (although the audible tones will continue).

• When all keys have been pressed (including the joystick flip button), each display section will

show a zero.

Press the test switch button to advance to the keyswitch test.

Keyswitch Test

This test performs a visual check of the keyswitch positions. When the test is started, the ENTER

display shows the current keyswitch position (OPER, PROG, or MENU) , and the SITE display

shows the number 0, 1, or 2 corresponding to the respective keyswitch position.

Rotate the keyswitch to all three positions, and verify that each of the three locations provides the

appropriate message and number. Following verification of the keyswitch positions, press the test

switch button to advance to the serial communications test.

Serial Communications Test

This test provides a communications check of the keyboard's RS-232/422/485 port. The test

requires a loop back connection of the XMIT pin to the RCV pin on the keyboard output port, or

on the dual terminal block (pin 4 connected to pin 5 on the J1 side only). During this test

procedure the CAMERA display shows the message “SERIAL”.

A sequence of test characters is sent from the microprocessor's transmit port to be verified at the

processor's receive port.

• If the test sequence is verified as correct, a double tone sounds on the speaker.

• If the test sequence is not verified, or if the test connection is incorrect, a single tone sounds

on the speaker.

After completing the serial communications test, press the test switch button to advance to the

ROM Checksum test.

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American Dynamics AD1981 Especificaciones Pagina 17