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TC4222
Vacuum
Fluorescent
Display
Installation
.
TC4221
DIP-Switch
Summary
On = 9600
baud
Off = 4800
baud
(factory setting)
ff = TCV & TC2100
n = TCIV, TC TCS,
Because the Telecenter V and Telecenter System 21 uses
a single-display
drive, all displays receive the same mes-
sages. However,
only the unit with the corresponding
address will display an individual
message.
Other
Systems
For Telecenter IV, Telecenter TCS and Telecenter 1100
operation, set slide switch 8 On and switches 1 through 5
Off
Troubleshooting
Diagnostic
Mode
-w
To select the diagnostic mode, set all slide switches On.
This mode works with
TCV
and
TC2100
(tone) or
TCIV
and
ChronoCom
(pulse) applications.
The display
shows all the characters received from
either the pulse or the tone inputs as hexadecimal charac-
ters. When the screen is full, the display will pause before
showing the next screen of hexadecimal
characters. The
unit can buffer up to 30 undisplayed
characters.
Here is a typical hex message on a Telecenter V system:
01,8l,lB,0l,[Text]
(81 = address 1;
lB, 01 =
Set Cursor 1)
The
TCV
and TC2100 systems use a 40-kHz carrier to
transmit asynchronous
ASCII serial data
Test Procedures
,
Use a voltmeter to check the "Display" terminals ("RED"
and
"DLK"
terminals): during normal operation, you should
get a reading of 10 to 12 VDC.
Within
five seconds of being turned on, the display
should show an initial message, such as "Vervvv
DD,"
where "Vvv" represents the software version number, and
"DD" represents the DIP-switch setting.
Note: The 5th and 6th bits of
"DD"
are
"0" regardless of
-
the DIP-switch settings.
Slide-Switch
Settings
for Display
Addresses
Display
1
2
Address
0
Off
Off
1
On
Off
2
Off
On
3
j
On
j
On
3
4
Off
Off
~~-~
Off
Off
Off
Off
.___~
Off
Off
On
Off
On
Off
On
Off
_-__
On
Off
.-.___
~.
Off
On
~__
Off
On
Off
On
Off
On
On
On
-._~.
On
On
On
On
On
On
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