|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
Good quality instructions manual. Very useful to me. Quick and excellent service from Owner-Manuals... Thanks !!!
;
Sono molto soddisfatto e, quando mi necessiterà, mi avvarrò nuovamente di questo servizio!
;
A comprehensive Operating and Service Manual. All schematics are complete and easy to read. The PCB drawings and complete parts list are very helpful. I would definitely recommend this manual.
;
SCANNING OF HIGH QUALITY
VERY, VERY HIGH VELOCITY DOWNLOAD
VERY GOOD PRICE,
TRUE SATISFIED, THANKS
;
Genuine Toshiba owner's manual. Couldn't really ask for more. And written in understandable English in contrast to a few recent experiences I have had with manuals for other equipment other than Toshiba but made in China and written in "Chinglish"!
The greatest duty cycle for the stop thyratron, V l b , occurs at m a x i m u m pulse rate and minimum pulse length. A t that time it is conducting for the longest period of time. Under these conditions the stop thyratren
w i l l be most subject to jitter and slowness.
ultivibrator tubes V l O l and V105 a r e particularly subject to microphonica. When changing V l O l and V105, it may be necessary to try several n e w tubes to obtain one which is not microphonic and which gives the required advance and delay. A small jump i the n trailing edge only would indicate that VlO8 is microphonic. .
-- Microphonic s usually appear as a small jump in pulse
A quick operational check for L2AU7 tubes can be made by exchanging with a 12AU7 not in a critical circuit, any position other than V l O l or
V105.
Interference Through Power Line Interference through the p o w e r line can occur when instruments on the line are not filtered or i f transformers connecting to the line do not have shields between the p r i m a r y and s e c ondary windings. The interference may appear i various forms. A n visual indication m a y be seen when viewing very low amplitude pulses on a very high sensitivity oscilloscope. The interference will cause ~ i n g i n g the leading and trailing edges of the pulse. at
Zn some models of the 212A Pulse Generator the filament transformer w a s constructed without an internal shield, Some of these models contained a line filter which is not shown in the schematic diagrams. If an instrument is known to cause interference through the power line, the line filter circuit s h o w n at the rear of the manual should be added.
2
--
ADJUSTMENTS
Pulse Length Calibration The PULSE LENGTH dial is hand calibrate d to the potentiometer in the pulse length multivibrator circuit. Composition potentiometers vary greatly in taper and can change taper after use. The calibration of the P U L S E LENGTH dial will be onlyapproxim a t e l y correct a l t e r the potentiometer has been replaced or has aged. An external time standard is necessary where high accuracy is required.
Following replacement of a component within the circuits V108 the calibration of the P U Z S E LENGTH dial should be checked, I necesf sary, the dial calibration m a y be adjusted for greater accuracy as fallows:
--
1.
2.
With pulse generator connected to a calibrated oscilloscope, s e t the PULSE LENGTH dial to 1Q.
If necessary, adjust C128 to obtain a pulse length of exactly 10
microseconds.
|
|
|
> |
|
