Tektronix 7B15 Instruction Manual page 77

A4 . SETUP CONDITIONS
1 . AC
2. AC HF REJ
3. DC
1 . AC
2. AC LF REJ
3. DC
REV JUN 1981
71315 Controls :
TRIGGERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NORM, (+)
LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stable display
TIME/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 ms
18" BNC Cable
BNC "T"
42" BNC Cable
Vertical Amplifier (HI Freq) . . . . . . . . . . . . . . . . . . . . . . . . . 10 mV/div
Low-Freq Function Gen . . . . . . . . . . . . . . . . . . . ., . 30 Hz, sine wave
Amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 divs .
(Set TRIGGERING LEVEL control as necessary) .
(Set the TRIGGERING LEVEL control as necessary.)
a. CHECK-Set the TRIGGERING MODE to AUTO and
check for a stable display (TRIG'D light on) with the
COUPLING push button set to :
b. CHECK---Change the TRIGGERING SLOPE to (-) and
repeat part a .
c. Disconnect the low-frequency function generator from
the 10X attenuator and connect the high-frequency sine-
wave generator to the 10X attenuator .
d . Set the SLOPE to (+) and the TIME/DIV switch to 2 ns .
e. Set the high-frequency signal generator for a 5-
division display (50 millivolts) at 250 megahertz.
f. CHECK--For a stable display (TRIG'D light on) with the
COUPLING switch set to:
g . CHECK---Set the SLOPE switch to (-) and repeat part f.
h. Set the amplifier plug-in unit deflection factor to 50
millivolts/ division and set the high frequency sine-wave
generator for a 3-division display (150 millivolts) at 1
GHz.
Calibration Part I--"71315
Performance Check
i. CHECK---For a stable display (TRIG'D light on) with the
COUPLING switch set to :
1 . AC
2. AC LFREJ
3. DC
(Set the TRIGGERING LEVEL. control as necessary)
j . CHECK----Set the SLOPE switch to (+) and repeat part i.
k. Set the TRIGGERING MODE switch to HF SYNC .
I. Set the amplifier plug-in unit deflection factor to 10
millivolts/division and set the high frequency sine-wave gen-
erator for a 7.5 division display (75 millivolts) at 1 GHz.
m . CHECK----For a stable display (TRIG'D light on) with the
COUPLING switch set to :
1 . AC
2. AC LF REJ
3. DC
(Set the TRIGGERING LEVEL control as necessary.)
n. CHECK--Set the SLOPE switch to (--) and repeat part m.
A5 . CHECK INTERNAL TRIGGERING
SENSITIVITY
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 .
7815 Controls :
TRIGGERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (+), NORM, INT
LEVEL . . . . . . . . . . . . . . . . . . . . . . Stable display (TRIG'D light on)
TIME/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 ms
BNC Cable
Vertical Amplifier (HI Freq) . . . . . . . . . . . . . . . . . . 0.5 division display
Low-Freq Function Gen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Hz
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