5-9
q. Disconnect the test setup.
p. Repeat parts b through h to adjust the 50 MHz
bandwidth limit, adjusting C431 and C235 in part d (adjust
C431 when adjusting for CH 1, C235 for CH 2). These
capacitors are located on the Main board.
o. Select VERTICAL MODE and set CH 1 on and
CH 2 off.
n. Select BANDWIDTH and set 50 MHz on. Set the A
SEC/DIV control back to 50 ns.
m. Check that the display amplitude is between 4.80
and 5.05 divisions.
I.
Increase the generator output to 5 MHz and set the
SEC/DIV control to 500 ns.
k. Set the generator to produce a 50 kHz, 5 division
display.
j. Connect the Leveled Sine-wave Generator output via
a 50
r!
precision cable and two 10X attenuators to the
CH 2 input connector.
i. Set the A SEC/DIV control to 100 us.
h. Repeat parts c and d for CH 2, adjusting L531 for
part d.
g. Set the CH 2 VOLTS/DIV control to 10 mV.
f. Select VERTICAL MODE and set CH 2 on and
CH 1 off.
e. Move the test setup to the CH 2 input connector.
d. ADJUST-L431 for as flat a response as possible.
This coil is located on the Main circuit board.
Adjustment Procedure-2430 Service
REV DEC 1986
Adjust the coils in the following parts
so
their slugs
are out approximately the same amount.
NOTE
c. Set the generator output level for a 5 division
display at a frequency of 100 kHz.
b. Connect the positive-going, FAST RISE output of
the Calibration Generator to the CH 1 input via a precision
50
r!
cable and a 10X attenuator.
ON
On (8)
Select STORAGE ACQUIRE
Set: REPET ON:OFF
AVG
ON
Select CH 1 COUPLING/INVERT
Set: 50
!1
ON:OFF
On
Select BANDWIDTH
Set: 20 MHz
50 ns
10 mV
A SEC/DIV
CH 1 VOLTS/DIV
Set:
5.
20 and 50 MHz Bandwidth Limit Filter
Adjustment (TV-Option 05 Only)
a. If a menu is displayed, press the MENU
OFF/EXTENDED FUNCTIONS button to remove it from
the screen. Select SAVE/RECALL SETUP and press the
menu button labeled INIT PANEL. Make the following
changes to the front panel setup:
i. Disconnect the test setup.
h. Repeat parts c and d, adjusting C235 for part d.
g. Set CH 2 VOLTS/DIV to 10 mv.
f. Select VERTICAL MODE and set CH 2 on and
CH 1 off.
To Next Page
Loading...
Need help?
General
