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have download a number of manuals todate , most are excellant, one or two sometimes a little difficult to read but a least avaialable, great site .
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So far I´m a satisfied customer. I have only downloaded "TECHNICS SX-KN470 Service Manual" maybe I will use it later.
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Good manual. It is complete and of high quality, both text and graphics. The schematics are with the original big size, so it can be viewed or printed without any loss of resulution and sharpness.
TM 11-6625-1614-15
Section III Paragraphs 3-28 to 3-34 PRF is the pulse repetition frequency in pulses per second (pps). Suppose, for example:
t
Model 410C 3-28. NEGATIVE PULSES. 3-29. In ( t2) and athe case of a 10 microsecond negative pulse pulse repetition frequency (PRF) of 1000 pps, tl would be 990 microseconds. Thus T / t1 would be
o
1 2
=
10 microseconds 990 microseconds
t
=
approximately 0, and from the graph it is seen that K is approximately 0. The expression would then reduce to
K = 0.55 PRF = 1000 pps To find K, assuming = 2 kilohms and tl=10micro3-30. It can be seen that in the case of negative pulses of short duration much smaller readings will be obtained for an equivalent positive pulse. As a result, large multiplying factors must be used and unless the pulse voltage is large, these measurements may be impractical. 3-31. MEASURING RESISTANCE (Figure 3-7). 3-32. Before making resistance measurements, power must be removed f rom the circuit to be tested. Also, make sure capacitors are discharged to eliminate any residual voltage. 3-33. MEASURING DC NANO-AMPERE CURRENT (Figure 3-8). 3-34. The Model 410C can be used to measure nanoampere leakage current in transistors and diodes. The three most sensitive DC voltage measurement ranges are used to measure DC nano-ampere currents.
seconds: o = 2 / 10° = 0.2. Location 0.2 on the X axis of the graph shown as Figure 3-6, and reading K where X and /Y axes intersect the unmarked curve. If R o tl were greater than 1, multiply the the ratio of X and Y axes by 10, and use the curve marked �R o / t1 and K each X10�. Solving the expression for the multiplying factor,
R /l
t
.
.
3-4
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