Hal Communications CWR6850, Instruction Manual

Page: 54 / 64

CHAPTER 7 PAGE 54
CHAPTER 7
SPECIFICATIONS
INPUT/OUTPUT:
AUDIO 30 mV to 2 V rms, 8 ohm audio
INPUT: 800 Hz for Morse receive; 1000–3000 Hz for RTTY
AUDIO XMIT OUT = 25 mV nom, 500 ohms (adj.)
OUTPUT: TAPE OUT = 25 mV nom, 500 ohms (adj.)
EXT.SP = adj. to 2 Watts, 8 ohms
TTL I/O: Standard TTL data interface levels;
(FSK TTL) Mark = +2.7 V
Space = +0.6 V (= CH key down)
MORSE KEY: Transistor switches to key + or - circuits
(SW.OUT-CW) Voltage = + or –100 VDC maximum
Current = 100 mA (+V); 10 mA (–V) maximum
SCOPE Separate mark and space connections for crossed ellipse indication
OUTPUTS: on X-Y scope display.
(OSCILLO) Voltage = 1.0 V
PP
typical, 200 kΩ
ASCII Parallel, Centronics - compatible printer output.
PRINTER: Received and transmitted text may be printed on the ASCII printer,
regardless of code.
KOS SWITCH: NPN transistor switch to ground to control TX/RX function
(SW.OUT-
of station. ("SW.OUT - REMOTE")
REMOTE) Voltage = 50 +VDC maximum
Current = 200 mA maximum
Isolation relay or circuit required to switch negative voltage control lines.
FSK OUT: NPN transistor switch to ground to switch direct
(SW.OUT-FSK) FSK keying circuit ("SW.OUT - FSK")
Voltage = 100 +VDC maximum
Current = 100 mA maximum
Standard: "ON" = space; "OFF" = mark; may be reversed with internal
jumper JP-1.
KEYBOARD: Connection to accessory keyboard.
VIDEO OUT: RS170 standard composite video output; 1.0 V
PP
, 72 ohms.
DATA CODES AND RATES:
BAUDOT U.S. Standard 5-level International Telegraphic Alphabet No. 2 Baudot Code
CODE: with 1 unit start and 1.5 unit stop bit (CCITT No. 2).
ASCII American National Standard Code for Information Interchange (ASCII) as
CODE: defined by ANSI Standard X3.4-1968. 8 unit code with 1 unit start pulse; 2
unit atop pulse (ISO/CCITT No. 5).