TB 11-6625-620-35-2
SECTION I
INTRODUCTION AND DESCRIPTION
(2) Types of distortion indicated. Types of distor-
1-1. Purpose and Scope. This bulletin Provides for
tion are total peak, early peak, late peak and average
the periodic calibration of Teletypewriter Test Set
for mark-to-space or space-to-mark transitions.
TS-80/UGM-1. It is to be used by personnel trained
and qualified in the use of calibration equipment.
(3) Distortion indicators. The percent distortion
Since calibration personnel are trained and qualified
meter is a 250 front panel milliammeter calibrated
in the usage of test and measuring equipment,
0% to 50% (2%) with a 1 mA sensitivity at 53
detailed instructions concerning the operation and
millivolts. Meter resistance is 53 ohms. There is one
use of these equipments are not contained in this
EARLY indicator lamp and one LATE indicator
bulletin.
lamp.
1 - 2 . Reporting of Technical Bulletin Im-
provements. The reporting of errors, omissions, and
(4) Power requirements.
recommendations for improving this bulletin by the
Voltage . . . . . . . . . . . . . . . . . . 115 or 230 10 volts ac, single phase
individual user is encouraged. Reports should be sub-
Frequency . . . . . . . . . . . . . . . . 50 to 400 Hz
mitted on DA Form 2028 (Recommended Changes to
Power consumption . . . . . . . 16.5 watts
Publications and Blank Forms) and forwarded direct
to Commander, US Army Electronics Command,
c. Calibration.
ATTN: AMSEL-MA-DS, Fort Monmouth, NJ 07703.
Interval . . . . . . . . . . . . . . . . . . In accordance with TB 43-180.
1-3. Descriptive Data. The Teletypewriter Test Set
Time required . . . . . . . . . . . . 2 hrs
TS-80/UGM-1 (distortion analyzer) indicates the
amount of distortion present in a start-stop
telegraph signal and compares the position of the in-
1-4. General Instructions. a. Calibration Repor-
put signal transitions to an accurate time-base signal
ting.
that is generated in the time base circuits, and in-
dicates whether the signal transitions are occurring
(1) Forms, records, and reports required for
at the correct time, early, or late. Additional data is
calibration personnel at all levels are prescribed by
listed in a, b, and c as follows:
TM 38-750. DA Form 2416 (Calibration Data) must be
annotated in accordance with TM 38-750 for each
a. Identification.
calibration performed.
Test Set, Teletypewriter TS-
Nomenclature . . . . . . . . . . . . .
800/UGM-1
(2) Adjustments to be reported on DA Form 2416
6625-965-0197
Federal stock number. . . . .
8-23/32x17-1/8x8-7/16 in.
Size . . . . . . . . . . . . . . . . . . . . . .
are designated (R) at the end of the sentence in
17-1/2 lbs
Weight . . . . . . . . . . . . . . . . . . .
which they appear. When adjustments are in tables,
TM 114625-62045-2, TM 11-6625-
References . . . . . . . . . . . . . . .
620-12
the (R) will follow the designated adjustment. Report
b. Specifications.
only those adjustments made and designated with
current.
(1) Types of input
(R).
20 mA; 60 mA
Neutral operation . . . . . . . .
30 mA; polar
Polar operation . . . . . . . . . . .
7-unit code at 45 and 150 bauts; 7.5-
Input rate acceptance . . . . .
b. Test Instrument. Teletypewriter Test Set TS-
unit code at 45, 50, 74 and 75
800/UGM-1 will be referred to as the Test In-
bauds; dot cycles at 23, 37, 37.5, 75,
strument.
or 100 Hz
SECTION 11
EQUIPMENT REQUIREMENTS
NOTE
Minimum use specifications are the principal parameters required for performance of the
calibration, and are included to assist in the selection of alternate equipment, which may be
used at the discretion of the calibrating activity. Satisfactory performance of alternate items
shall be verified prior to use. All applicable equipment must bear evidence of current
calibration.
2
