MIL-PRF-1/1203K
TABLE I. Testing and inspection - Continued.
Inspection
Method
Notes
Conditions
Acceptance
Symbol
Limits
Unit
Level 14/
Min
Max
Conformance inspection,
part 2 - Continued.
13,000 µmhos
Cp = 4 µF;
---
Sm
7,000
Transconductance (1)
1306
---
Ck = 1,000 µF
ĆSm
Transconductance (2)
1306
---
Ef = 6.0 V;
---
---
20
%
Cp = 4 µF;
Ef
Ck = 1,000 µF
---
NF
---
8.1
dB
Noise figure (2)
---
3/
Ef = 6.0 V;
F = 450 MHz;
Cp = 500 pF
Amplification factor
1316
---
---
Mu
65
115
---
DSCC Drawing 67030
1.06
1.36
pF
Direct-interelectrode
1331
---
Cgp
capacitance
1.20
2.10
pF
Cin
---
0.005
0.015
pF
Cout
0.80
1.40
pF
Chk
Envelope strain
---
7/
---
---
---
---
---
---
Ep
---
10
Low-frequency vibration
1031
10/
Ebb = 150 V dc;
mV ac
Rp = 10,000 ohms;
15 G; F = 40 Hz
Conformance inspection,
part 3
Heater-cycling life
1506
8/
Ef = 7.0 V;
---
---
---
---
---
Ehk = 70 V dc;
Rk = 0; Ec = Eb = 0
Heater-cycling life-test
---
end point:
µA dc
Heater-cathode leakage
1336
---
---
Ihk
---
40
Stability life
1516
---
Ebb = 300 V dc;
2.5
---
---
---
---
Ehk = 70 V dc;
Rb = 0.018 Meg;
Rk = 82 ohms;
Rg = 0.01 Meg
Stability life-test
---
end point:
ĆSm
---
15
%
---
---
---
Change in transconduc-
tance (1) of individual
t
tubes
Intermittent life (1)
1501
9/
Group A; stability-life
---
---
---
---
---
test, or equivalent
conditions; t = 1,000
hours
See footnotes at end of table.
3
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