MIL-PRF-1/60D
TABLE I. Testing and inspection - Continued.
NOTES:
1.
See "Reduced pressure (altitude) rating" and altitude maximum peak voltage in the basic document.
2.
Insert 20,000 ohms and a suitable bypass capacitor in series with grid No. 1. Apply sufficient ac signal to produce
0.5 mA dc average grid current.
3.
In place of circuit of note 2, the tube may be operated in converter oscillator test set, with tank circuit impedance adjusted
to 3,100 ohms, with Rg1 = 50,000 ohms, Ic1 shall be between 150 and 260 µA dc; or with Rg1 = 20,000 ohms. Ic1 shall
be between 380 and 640 µA dc. Ec3 = 0.
4.
This test to be performed at the conclusion of the holding period.
5.
One tube from every other day's production shall be subjected to this test. Any failure shall cause this test to be
performed at an acceptance level of 6.5 (see note 12).
6.
Tie screen and anode together at socket.
7.
Tank circuit impedance adjusted to 9,000 ohms.
8.
Rated heater voltage shall be applied.
9.
Ec1 = -16 V dc; Ec3 = 0; apply 16.5 V ac to grid 1. Ec1 may be obtained by self rectification.
See note 3. With Rg1 = 50,000 ohms; Ic1 (min) = 135 µA dc or with Rg1 = 20,000 ohms; Ic1 (min) = 330 µA dc.
10.
11.
This test shall be performed during the initial production and once each succeeding 12-calendar months in which there is
production. An accept on zero defect sampling plan shall be used, with a sample of three tubes with an acceptance
number of zero. In the event of failure, the test will be made as a part of conformance inspection, part 2, with an
acceptance level of 6.5 (see note 12). The regular "12-calendar month" sampling plan shall be reinstated after three
consecutive samples have been accepted.
12.
This specification sheet uses accept on zero defect sampling plan in accordance with MIL-PRF-1, table III.
Custodians:
Preparing activity:
Army - CR
DLA - CC
Navy - EC
Air Force - 11
(Project 5960-2007-001)
DLA - CC
Review activities:
Army - AR
Navy - AS, CG, MC, OS
Air Force - 99
NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and
responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at
4
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business