2. Report of Equipment Publication Improvements.
Meter accuracy ...................2%.
a
Report of errors, omissions, and recommendations for
Typical ringtime .................10 to 14 miles.
improving this publication by the individual user is
c. Program Data.
encouraged. Reports should be submitted on DA Form
Time required for calibration ................... 1 hour (approx)
2028 (Recommended Changes to DA Publications) and
Calibration level ...................................... Maintenance
forwarded direct to Commander, U.S. Army Electronics
Command, ATTN: DRSEL-MA-Q, Fort Monmouth, N.J.,
4. General Instructions. a. Calibration Data Card.
07703.
During the performance of this procedure, annotate DA
Form 2416 in accordance with instructions given in
3. Description. Test Set TS-172(*)/UP is a general-
TM 38-750.
purpose, echo box test set used in the frequency range
b. Unit Under Test. Test Set TS-172(*)/UP will be
of 1,215 to 1,370 mc. Additional data are listed in a, b,
referred to as unit under test.
and c below.
c. Frequency of Calibration. The maximum time
a. Identification.
Nomenclature ...............Test Set TS-172 (*)/UP.
172(*)/UP will be in accordance with instructions given in
Federal stock number....6625-643-3120.
TB 43-180.
Line item number ..........D76722.
d. Removal. Do not remove the unit under test
Size .............................19 3/4 X 17 3/8 X 17 3/8 in.
from its protective case unless necessitated by
Weight .........................66 lb.
equipment connections and/or components to be
Reference ....................TM 11-1262 and MIL-C-17808A
adjusted which are not accessible from external ports on
b. Specifications.
the unit under test.
Input requirement ................None.
Frequency range:
5. Differences Among Models. Test Set TS-172A/UP
TS-172/UP . .................1,215 to 1,360 mc.
differs from Test Set TS-172/UP in that it has a
TS-172A/UP .................1,215 to 1,370 mc.
frequency scale, and the loop adjustment has been
Frequency control ...............Hand tuned.
eliminated. in addition, specifications differ as listed in
a
Meter sensitivity:
TS-172/UP ...................0 to 20 microamperes.
TS-172A/UP .................0 to 100 microamperes.
SECTION II
CALIBRATION
6. Equipment Required.
Equipment required for
calibration performance checks and adjustments is listed
not available, an equivalent calibrated item may be used.
Table 1. Equipment Required for Calibration
Performance Checks and Adjustments
A. Authorized Equipment
Nomenclature
Manufacturer and Model number
Frequency Counter
Hewlett Packard, Model 5245L
Frequency Converter
Hewlett Packard, Model 5254C
Indicator, Standing Wave Ratio
AN/UPM-108A or Hewlett Packard, Model 415E
Meter Test Set
TS-82/GSM-1 or John Fluke, Model 760A
AN/URM-64 or Hewlett Packard, Model 8614A
B. Authorized Accessories
7. Preliminary Procedure. Adjust the mechanical zero
Federal stock No
adjustment meter.
Nomenclature
(Identifying No )
Description
Note. The following paragraphs are divided into
Connector adapter 5935-201-3090
BNC jack-to-N plug.
subparagraph a, performance check, and subparagraph
Connector adapter 5935-683-7892
BNC T-type, 2 jacks
b, adjustments When the performance check is not
1 plug.
within tolerance and no adjustment is specified, the
Radiofrequency
5995-752-8781
48 in. RG-58/U
deficiency must be corrected before continuing with the
cable assembly
BNC plug
procedure.
(4 required).
terminations
Note. Be familiar with the entire procedure before performing
calibration.
a
These specifications are for information only and are not necessarily verified in this procedure.
3