TM 11-6625-1668-12
Where-
CR = Carriage Return
LF = Line Feed
LET = Letters shift
SP = Space (horizontal shift)
B/L = Blank (nonspace)
FIG = Figures Shift
the Analyzer; by way of a rear panel connector, adding controlled amounts of
marking or spacing bias distortion to the signal and retransmits the signal at any
of its outputs.
This feature may be used in checking the Error Rate/Error Definer operation of the
Analyzer. It-may also be used as an additional message form in testing
synchronous data systems and equipment.
Character release modes .............
Free-run--Synchronous or start-stop with selectable character length of 7.0 to 16.0
units.
Stepped--start-stop only. Manual character release by front panel pushbutton.
Electrical character release external source-60 volts dc at 2 ma. (operational 6
volts or contact enclosure input available).
External timing synchronization ...
The generator may be synchronized with a station master clock (MIL-STD-188B low
level input) using signals at bit rate of 2 X the desired output rate in bauds to
produce undistorted test signals at the data outputs.
The generator may be operated from an external oscillator at a frequency in Hertz of
200 times the desired operating speed in bauds to produce clear or distorted
outputs. Requires polar signal 6 volts 20%. Input impedance of 6000 ohms.
Internal timing..............................
Crystal controlled timing source for operation at speeds of 37.6, 46.6, 60, 61.1, 75,
160, 800, 600, 1200, 2400, 4800, and 9600 bauds with built in provision for one
spare speed which can be activated by adding a crystal and a wire link to produce
any speed in the range of 30 to 9600 bauds. Stability .01 % per day.
Accuracy 1% distortion under all conditions.
Distortion .....................................
Types--"No Distortion": Overrides distortion switch settings.
Bias: Marking, Spacing, Switched.
End: Marking, Spacing.
Amount-)0% to 49% in 1% steps.
Electrical output ...........................
High Level--Polar/neutral isolated keyer for 800 volt neutral, 150V polar, 100 ma.
maximum. Loop-power supplied externally. Output fused for 260 ma. Maximum
operating speed of 160 bands.
Low Level--MIL-STD-188B Low Level output keyer uses either 6V or +12V isolated
internal supplies (strapping option can produce negative mark).
Clock-Data timing output at bit rate of 2X data rate at MIL-STD-188B low level.
Indicators:
Signal ..........................................
Signal indicator lights for "MARK" output.
Clock ...........................................
Alarm light indicates loss of timing.
115/230 vac 10%, 47 420 Hz 30 watts.
Input power..................................
Physical.......................................
51/4 high, 19" wide, 181/2 behind front panel. Handles and removable flanges for
portable applications. Weight: 31 pounds (approximately).
b. Analyzer Characteristics
Measurements .............................
Distortion Mode--All types telegraph distortion (Transaction Displacement) including-
Marking and spacing bias Marking and spacing end Total Peak Early Peak Late
Peak
Peak Monitor Mode --Monitors live traffic and registers a count on the readout each
time the distortion measured exceeds the threshold set on the thumbwheels.
Percent threshold is adjustable from 0 to 49% in 1% steps.
1-10
Previous Page
