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b. The DIP switch contains eight switches,
numbered 1-8; number I represents the
least significant bit (LSB) of the address.
All switch settings are marked ON and OFF.
A switch in the ON position produces a logic
"zero"; a switch in the OFF position produces
a logic "one."
NOTE
SWITCH NUMBER 8 MUST ALWAYS
BE ON (A LOGIC "ZERO") FOR THE
POLLING INTERFACE OPTION.
c. Set the switches to form a device address for
the terminal. For an example, if ASCII "D"
is selected as the device address, the switch
setting would be as follows:
d. After setting the switches for the selected
device address, return the ADM-2 unit to its
upright position.
Polling interface installation information may be
found in Appendix C.
2.4.4 Word Structure
To change the standard 10-unit code of the ADM-2,
the asynchronous receiver/transmitter chip on the
main logic board must be re-strapped as detailed in
Appendix C.
The auxiliary asynchronous receiver/transmitter
(used with a serial printer interface or the RS-232-C
extended interface) may be re-strapped in accor-
dance with the data in Appendix C.
2.4.5 Power Option
2 3
4
5 6
7
8
SWITCH NUMBER
ASCII "D" CODE
0
0
0 0 0
o
The ADM-2 is normally equipped to accept 60 Hz,
Ii0V AC input power. If 50 Hz, 220V AC input
power is to be used, the changes listed in Appendix
C must be made.
SWITCH POSITION on on off on on on off on
2-4
In addition, change the crystal, installed at location
M3 on the main logic board, to a crystal rated at
10,41 OAKHz
(standard LSI part number 800-A-I 0).
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