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Adjustment Procedure— 2215A Service
TRIGGER
Equipment Required (see Table 4-1):
Leveled Sine-Wave Generator (Item 2)
10X Attenuator (Item 7)
50-fi BNC Cable (Item 4)
Digital Voltmeter (Item 12)
50-!i BNC Termination (Item 5)
Screwdriver (Item 13)
Dual-Input Coupler (Item 6)
See
ADJUSTMENT LOCATIONS 1
a t the back o f this m anual fo r te st p oints and adjustm ent locations.
INITIAL CONTROL SETTINGS
PROCEDURE STEPS
Vertical (Both Channels)
1. Adjust Trigger O ffset (R309)
POSITION
Midrange
a. Set the Channel 1 trace and the Channel 2 trace to
VERTICAL MODE
BOTH-ALT
the center horizontal graticule line using the Channel 1 and
BW LIMIT
Off (button out)
Channel 2 POSITION controls.
VOLTS/DIV
0.5 V
VOLTS/DIV Variable
CAL detent
INVERT
Off (button out)
b. Connect the digital voltmeter low lead to chassis
Input Coupling
GND
ground and the high (volts) lead to W4000-1 (Alt Sweep
Logic circuit board connector to the Main circuit board).
Horizontal
c. CHECK— The offset voltage reading is less than 80
POSITION
Midrange
mV. Note the reading for use in part e.
HORIZONTAL MODE
A
A and B SEC/DIV
1 ms
SEC/DIV Variable
CAL detent
d. Set the A&B INT switch to CH 1.
X I0 Magnifier
Off (knob in)
B DELAY TIME POSITION
Fully counterclockwise
e. ADJUST— Trigger Offset (R309) so that the voltage
reading is the same as that obtained in part c.
B TRIGGER
SLOPE
OUT
f. Set the A&B INT switch to CH 2.
LEVEL
A
I l i l / H
A
C
n
Midrange
g. Repeat parts c through f until there is 1 mV or less
difference in the voltmeter readings between the CH 1 and
A TRIGGER
CH 2 positions of the A&B INT switch.
VAR HOLDOFF
NORM
Mode
P-P AUTO
2. Adjust Trigger Sensitivity (R479) and (R627)
SLOPE
OUT
LEVEL
Midrange
a. Set:
A&B INT
CH 2
A SOURCE
INT
VERTICAL MODE
CH 1
A EXT COUPLING
DC
CH 1 VOLTS/DIV
0.1 V
AC-GND-DC (both)
AC
A and B SEC/DIV
10
ns
R EV J U L 1984
5-19
Содержание 2215A
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Страница 9: ...2215A Service 4735 01 vi The 2215A Oscilloscope ...
Страница 138: ...2215A Service 4735 04 Figure 9 4 Basic block diagram ...
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Страница 145: ...CIRCUIT BCARD N TER CONNECTIONS 2 2 1 5 A 4755 20 ...
Страница 153: ...2215A S e rv ic e D UJ o C D GO CO in 10 CJ Figure 9 8 Circuit view of A1 Main board ...
Страница 157: ...1 p 2 m 3 p 4 p 5 P 6 p 7 p 8 p 9 A T B Z 2 I5 A ...
Страница 158: ...H T J t K t L t M T N T p t S 4 7JS Z2 ...
Страница 168: ...I 2 3 4 5 6 7 8 9 B H K L M N 2 2 I 5 A 473S Z ...
Страница 173: ...I 2 to 3 to 4 to 5 to 6 7 to 8 to 9 2 215A B TIMING ALTERNATE B SWEEP S ...
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Страница 181: ...I 2 3 4 5 6 7 8 9 AXIS CRT ...
Страница 184: ...2215A Service R240 DL C0MP1 C237 HF PEAK COMP R874 ASTIG R870 GEOM A1 MAIN BOARD ADJUSTMENT LOCATIONS 4735 31 ...
Страница 187: ...R652 DELAY END 4735 34 A 5 A L TE R N A T E SW EEP B O A R D A D J U S T M E N T L O C A T IO N S ...
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