Vertical Deflection System Check; Check Vertical Gain - Tektronix 7623A Instruction Manual

Performance Check--7623A/R7623A Service
B. VERTICAL DEFLECTION SYSTEM
Equipment Required:
1. Signal Standardizer
2. Time-base unit
3. Amplifier unit
4. Medium-frequencysignal generator
5. 50-ohm BNC cables (2)
6. BNC to calibrator pin cable
7. BNC T connector
Control Settings
Preset the 7623A controls as follows:
INTENSITY Midrange
VERT MODE LEFT
TRIG SOURCE VERT MODE
Display Selection NON STORE
1. Check Vertical Gain
a. Install a time-base unit in the horizontal compartment and set it for auto, internal, + slope
triggering at a sweep rate of 50 microseconds/division.
b. Install the signal standardizer in the left vertical compartment and set the Test switch to
Vert or Horiz Gain and the Rep Rate to 100 kHz.
d. CHECK—Thatthe deflection of the seven center traces is six divisions £0.06 division. Note
the exact deflection for part g of this step.
e. Remove the signal standardizer from the left vertical compartment and insert it into the
right vertical compartment.
f. Set the VERT MODE to RIGHT.
g. CHECK—That the deflection of the seven center traces is the same as in part d within 1%.
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