Specifications

Subparagraph h(2), line 5. Change “ME
30B/U to: AN/URM-145.
Page 63, figure 31. In figure 31, change callout
“Q7606-C” to: Q7602-C.
Page 65 (page 2 of C 2), paragraph 61a, chart.
Delete the chart and substitute:
(1) TM 11-6625-496-12, with current
changes.
(2) TM 11-6625-496-45, with current
changes.
(3) TB SIG 355-1.
(4) TB SIG 355-2.
(5) TB SIG 355-3.
Page 3 of C 2, paragraph 61b, line 4. Change
“DA Pam 310-4” to: DA Pam 310-7.
Page 66 (page 3 of C 2), paragraph 63. Add the
subparagraphs d, e, and f after subparagraph c.
d. All test voltages (ac and dc) applied to
the test probe in the procedures given in para-
graphs 64 through 69 shall be increased gradually
and shall be applied instantaneously after each
increment, and the signal source shall not be
connected to the test probe while the level of
the applied voltage is being changed, or while
the adjustment control in the test set under test
is being changed. Therefore, the procedures given
in paragraphs 64 through 69 shall be performed
in such a way as to accommodate this instantan-
eous application of the test voltages.
e. The light indication change should be al-
most instantaneous at the moment of touching
the test probe to the test voltage, except for the
1,000-Hz (audio) tests given in paragraph 66.
Thus, in the audio tests, the light change should
occur within 10 seconds after the application of
the proper voltage to the test probe.
f. Refer to the appropriate adjustment pro-
cedures (paragraph 43) when the require-
ments of a parrticular circuit (para 64 through
69) cannot be obtained.
Page 67 (page 5 of C 2), paragraph 65e, make
the following changes:
Line 3, change “RED” to: GREEN.
Line 4, change “GREEN” to: RED.
Page 69, appendix I (page 1 of C 3). Add the
following to the appendix.
TB SIG 355-3
Depot Inspection Standard
for Moisture and Fungus
Resistant Treatment.
TM 11-6625-524-15-1 Operator, Organizational,
DS, GS, and Depot
Maintenance Manual:
Electronic Voltmeter
AN/URM-145.
Page 75, figure 38. Make the following changes:
To positions “A”,"2",
and "8" of switch
S7902E, front, add position 19 and put the number
in a box.
Change the figure caption to: TS-1777/VRM-
1, early production units, power distribution
diagram.
10