High-Frequency Amplifier Plug-In Unit; Refer To Section 6, Instrument Options And The Change Information At The Rear Of The Manual For Any Modifications Which May Affect This Procedure; B Delay Mode; Adjust External Trigger - Tektronix 7B15 Instruction Manual

Calibration Part II-"7815
Adjustment and Performance Check
Equipment Required : (Numbers correspond
1 . Oscilloscope mainframe
2. High-frequency amplifier plug-in unit
3. High Impedance amplifier plug-in unit
4. High-frequency sine-wave generator
6. Low-frequency function generator
7. Digital ohmmeter
EFORE YOU BEGIN :
(1)
Perform the Adjustment and Performance Check
Power-Up Sequence .
(2) Refer to Section 6, Instrument Options and the
Change Information at the rear of the manual for any
modifications which may affect this procedure.
(3) See
;7-01NI
,°.,) .IIlsr ;;L^~I
LOG~:(WL~NS
foldout page in Section 8, Diagrams and Circuit Board
Illustrations.
TRIGGERING SYSTEM PRELIMINARY CONTROL
SETTINGS :
7815 Time Base
TRIGGERING . . . . . . . . . AUTO, AC, EXT, OUT 50 S2
LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Midrange
TIME/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ms
POSITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Midrange
HOLD OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MIN
B DELAY MODE . . . . . . . . . . . . . . . . . .INDEPENDENT'
MAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CAL IN
VARIABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CAL IN
Vertical Amplifier (HI Imp) . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 V/div.
Low Freq Function Gen . . . . . . . . . . . . . . . . . . . . 1 kHz, square wave
Oscilloscope Mainframe
Intensity . . . . . . . . . . . . . . . . . . . . . . . . . . Visible display
Focus . . . . . . . . . . . . . . . . . . . . . . . Well defined display
A1 . CHECK EXTERNAL TRIGGER INPUT
RESISTANCE
5-24
SETUP CONDITIONS
to test equipment listed in Table 5-2)
9. Rigid Plug-in extender
10 . Coaxial cables (2 required)
11 . T connector
13 . Screwdriver
14 . 10X probe
15 . Low-capacitance screwdriver
a. CHECK--hat the input resistance is 505 within 2%
(1 f2).
A2 . ADJUSTEXTERNAL TRIGGER
COMPENSATION (C117)
SETUP CONDITIONS
NOTE
If the preceding step was not performed, first
refer to the Triggering System Preliminary
Control Settings,
then proceed with the
following instructions .
a. Set the low-frequency function generator and the
amplifier plug-in unit for a 4 to 6 division display at 1 kHz
(position as necessary) .