TM 11-7440-232-12/NAVELEX 0967-LP-275-5010
1-11. EQUIPMENT DATA
Data Rates .....................................................................
1200 or 2400 bits per second.
DATA INPUT
Input Line .......................................................................
Single wire ground return.
Format ...........................................................................
NRZ serial-by-bit binary data.
Level Options .................................................................
See Data Level Options tabulation
Input Sensibility..............................................................
Voltage transients of up to 0.8V peak-to-peak
do not affect operation.
Input Impedance ............................................................
Greater than 5000 ohm, shunted by not more
than 200 picofarads.
Rise/Fall Times ..............................................................
Up to 200 microseconds acceptable.
DATA OUTPUT
Output Line ....................................................................
Single wire ground return.
Format ...........................................................................
NRZ serial-by-bit binary data.
Level Options .................................................................
-6V for "1" or mark, +6V for "0" or space. Can
be reversed by strapping options.
Output Impedance..........................................................
Less than 100 ohms at load currents up to 10
milliamperes.
Load Impedance ............................................................
600 ohms minimum shunted by not more than
2500 picofarads.
Rise/Fall Times ..............................................................
Between 1 and 2 microseconds, with
provisions for adding capacitor to increase
time to 10% of bit length.
TRANSMITTER OUTPUT
Signal.............................................................................
Synchronous fm.
Frequency ......................................................................
1200 to 2400 Hz nominal.
Level ..............................................................................
-10 to +6 dbm, adjustable.
Impedance .....................................................................
300, 600 or 900 ohms balanced.
RECEIVER INPUT
Signal.............................................................................
Synchronous or nonsynchronous frequency modulation
Frequency ......................................................................
1200 to 2400 Hz nominal.
Level ..............................................................................
Adjustable to accept level between -30 and 0
dbm. Short term variations 10 db above and 20
db below the set level are acceptable.
Impedance .....................................................................
300, 600, or 900 ohms balanced.
1-17
