Setup Procedure; Sn B1 09999-Below; R7844 Sn B099999 - Tektronix 7844 Instruction Manual

D. HORIZONTAL SYSTEM (For instruments 7844
SN B1 1 DODO-above; R7844 SN B1 00000-above)
1 . Check Beam 1 Horizontal Amplifier Gain . . . . . 4-1 8
2. Check Beam 1 High-Frequency Timing . . . . . . 4-1 8
3 . Check Beam 2 Horizontal Amplifier Gain
4 . Check Beam 1 and Beam 2 Horizontal Amplifier
Low-Frequency Linearity . . . . . . . . . . . . . . . . . . . . 4-1 9
5. Check Beam 2 High-Frequency Timing . . . . . . 4-1 9
E. HORIZONTAL SYSTEM (for instruments 7844
SN B1 09999-below; R7844 SN B099999-below)
1 . Check Beam 1 and Beam 2 Horizontal Amplifier
Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
2. Check Beam 1 and Beam 2 Horizontal Amplifier
Low-Frequency Linearity . . . . . . . . . . . . . . . . . . . . 4-21
3. Check Beam 1 High-Frequency Timing
4. Check Beam 2 High-Frequency Timing
F. VERTICAL SYSTEM
1 . Check Beam 1 and Beam 2 Vertical Amplifier
Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
2. Check Beam 1 and Beam 2 Vertical Crossover
Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
3. Check Low-Frequency Linearity . . . . . . . . . . . . 4-24
4. Check Beam 1 and Beam 2 Vertical Crossover
Aberrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
5. Check Beam 1 and Beam 2 Vertical Amplifier
400 MHz Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
@
Performance Check-7844/R7844 Service
Page
6. Check Vertical Channel Isolation . . . . . . . . . . . 4-25
7. Check Vertical Trace Separation Operation . . . 4-26
G. READOUT SYSTEM
4-1 9
Check Readout Modes . . . . . . . . . . . . . . . . . . . . . 4-27

Setup Procedure

1 . Connect the instrument to a power source tha meets
the voltage and frequency requirements marked on the in­
strument rear panel. Refer to the Operating Information sec­
tion in this manual for operating voltage information.
4-22
4-22
If the correct line voltage is not available, use a vari­
able autotransformer to provide the correct input
voltage.
2. Allow at least 20 minutes warmup before proceeding.
Titles for external controls of the 7844/R7844 are cap­
italized in this procedure (e.g.,
Page
NOTE
NOTE
B
TRIG SOURCE ).
4-9