Circuit Description; Front Panel Display And Pushbuttons; Figure 5-5: Jumper Settings For Ports B And C; Table 5-2: Keyboard Scan Codes - evertz 8084 Instruction Manual

5.4

CIRCUIT DESCRIPTION

TECHNICAL DESCRIPTION
Models 8084/8084AD/8085 Closed Caption Encoder Manual
J16
J17
J16
J17
J16
J17
J16
J17

Figure 5-5: Jumper Settings for Ports B and C

5.4.1

Front Panel Display and Pushbuttons

A 16 digit alphanumeric display and a keypad with eight or ten buttons are
contained on a separate circuit card (5220) which is connected to the main
circuit board via a 20 conductor ribbon cable.
To perform a keyboard test and lamp test of the front panel LEDs hold
down the SETUP key on power up. The front panel display will show:
00 KEY
As you press various key combinations, different LEDs will illuminate. The
front panel display will show the keyboard scan codes for each key
combination pressed. Table 5-2 below shows the SCAN code for each
key. To exit this test mode, remove and re-apply power to the unit.
CAPTION ON/OFF
KEYER FLD 2
SHIFT

Table 5-2: Keyboard Scan Codes

Revision 1.6.6
Port B RS-232
Port C RS-232
Port B RS-422
Port C RS-232
Port B RS-232
Port C RS-422
Port B RS-422
Port C RS-422
01 KEYER FLD 1
01 DECODER
02 SELECT
05
06 SETUP
07
41
42
45
46
47
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