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Curtis Computer kb4900 - Hardware Components and Power; Rear Panel Connections

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INTEGRATED CIRCUIT CDHPLEHENT:
B035,
2732.
2114,
74LS75
(2),
74LS1b4,
lLD74(3), B044, 741-LS175,
7805
Euxth real-time clack
option
HC14518B (3)1
INPUTS:
RECEIVER AUDID...B Ohm!
PADDLE
KEY.......Single
or twin lever
(optically
xsolated)
MANUAL
KEY
....Telegraph key
(optically
isolated)
12
Vdc....
.....10 T0 14 Vdc 3 500 mA.
OUTPUTS:
KEYLINE... .
300V,
500mA max.
mercury relay
PTT......
....300V,
500mA
max.
mercury
relay
LDDP......
.....30OV,
l00mA
max.
(optically
isolated)
TTL TTY... .....TTL
level,
sink or source 5 MA
SPEAKER...
.....8 Ohms or
headphones
POWER REQUIREMENTS:
1l7Vac S0—60
HZ,10VA
OR 12Vdc 9 500 mA.
234Vac
50-50 HZ
by special
order
SIZE:
12" wide x B-1/2"
deep
x 4-1/2"
high.(30.4B
X 21.95 x
11.43
cm)
WEIGHT:
5.5 lbs.
(2.49kg)
FINISH:
Panel is
light grey,
bottom and
side
panels
are
textured black.
(lettering
in
white, yellow
and red)
PANEL
CUNTRDLSI
Speed, weight, pitch
and volume
controls;
tune/self—test
switch, power switch, system
reset
switch,
overflow warn-
ing lamp,
illuminated
speed
and bu+{er
status meters.
REAR
PANEL:
Jacks For
l2Vdc,
TTY
loop,
TTY
TTL level
output,
paddle
key,
manual
key,
transmitter
keyline,
transmitter
PTT,
receiver
audio,
and external
speaker
Dr
headphones.
117
Vac
receptacle
and ¥use.
(SPECIFICATIONS
SUBJECT TO CHANGE
WITHOUT NOTICE.)
(8)