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Sect. IV Page 21
NOTE with the VERNIER control. If the spacing is more
than3.3 centimeters, reduce the value of R147 which
Skip Steps 7, 8, and 10 if Sweep Switch has is in series with the VERNIER control.
configuration shown in Figure 4-9A.
20) Set the SWEEP TIME/CM switch to 1 MILLI-
SECONDS and adjust R145 to space the pips exactly
7) Set the Marker Generator for a 5 mc sine wave. 1 centimeter apart.
8) SettheSWEEPTIME~MtoQ2MICROSECONDS 21) Set the Marker Generator for 10 millisecond
and adjustC65 so each cycle of the sine wave is ex- pips.
actly one centimeter long.
22) Set the SWEEP TIME/CM switch to 10 MILLI-
9) Set theMarker Generator for 1 microsecond pips SECONDS and adjust R144 to space the pips exactly
and rotate the SWEEP MODE into PRESET. 1 centimeter apart.
10) Set the SWEEP TIME/CM switch to 0.5 MICRO- 23) Set the Marker Generator for 100 millisecond
SECONDS and adjust C64 until the pips are exactly (0.1 second) pips.
2 centimeters apart.
24) Set the SWEEP TIME/CM switch to 0.1 SECOND
11) Set the SWEEP TWIE/CM switch to 1 MICRO- and adjust R143 to space pips exactly 1 centi-
SECONDS and adjust C61 to space the pips exactly meter apart.
1 centimeter apart.
12) Set the Marker Generator for 10 microsecond E. TEST SINGLE SWEEP OPERATION
pips.
1) Set the SWEEP TIME/CM switch at 10 MILLI-
SECONDS or longer.
13) Set tho SWEEP TIME/CM switch to 10MICZiO-
SECONDS and adjust C59 to space the pips exactly
2) SetTRIGGERLEVEL to 0 and SYNC. to JXT .
1 centimeter apart.
.4pp!ya signal with a frequency of 1 mc. or below.
Adjust signal amplitude to obtain 4 centimeters peak-
14) Set theMarker Generator for 100 microsecond
to-p eak vertical deflection.
pips.
3) Set the NORMAL-SINGLE SWEEP (SWEEP RE-
15) Set the SWEEP TIME/CM switch to 0.1 MILLI-
SET, INT-EXT) switch to SINGLE SWEEP (EXT) ,
SECCNDS and adjust R157 to space the pips exactly
1 centimeter apart.
4) Rotate the SWEEP MODE control maximum
clockwise; then counterclockwise into PRESET. A
16) Set the Marker Generator for 5 microsecond
single sweep will be obtained on switchinginto PRE-
pips.
SET.
17) Set the HORIZ. SENSlTIVlTY switch to X5;-X10,
5) Rotate SWEEP MODE off of PRJISET, lamp I6
X50, and X100. This should produce pips spaced
should gaon... .Cnntinued clockwise rotation of this
every 0.25, 0.5, 2.5, and.5 centimeters.
L control should produce one sweep after which lamp
I6 will be off. Leave theSWEEP MODE control ro-
Lf the expanded sweep.ranges, are out of calibra- tated maximum clockwise.
tion, set the HORIZ. SENSITmITYto XlOO and ad-
just R213, located on the Horizontal Amp1ifier:chas: , The. spat should return to the sweep starting point.
sis, to space the pips exactly 5 centimeters apart. This may be determined by temporarily increasing
... , , . 1.- .- . .. I ,J ' i. 1.
.. , ... . .e I .. __. - intensity . .
R etu rn the H OR.3 Z . . S E NSIT1.VTr.Y. switch t 6 .'K 1. 7 .1: -\e . . -fl, *
-. , . -ar. -,__.., . .''? '.. : - . :: .< '+: -. .;- 6j. It should &.-possible to compleL steps 4 and 5
wit4 the ..-EP,TIME/CM switch in any position.
- -.-- e- '.' '-
AS the sweep time is shodened it becomes.prog-
18) Setthe~dkei' Generitoy fof 1 &fllisecond.&psi
,. !.' . .. ., , .. ,. ,.. I :.. : . -. .: : ci . .. ressively difficult to see the trace.
..
19) Rotate the. i.sweep .,EFQTIEX. control i from'one, 14 c
extreme: to. thedher: Pip. spacirig..should 'change
from 1O:eentimeters to between. 2.9 andc33 ?enti-& THEJBEMAIT&G'~STkPS 'CHECKSINGLE SWEEP
meters. If the spacing is less than 2.'9 centime'terbi OPERATTUN BY WSNG AN EXTERNAL PULSE TO
connect a 120,000 ohm or higher resistor in parallel RESET THE SWEEP. |
ACEC
