Tektronix T921 Instruction Manual page 154

Voltages shown on this schematic diagram were measured with a Tektronix DM 501 Digital Multimeter . Voltage
measurements can vary as much as ±20%. No signals were applied to the vertical input orthe X (external trigger) input . Referto
Waveform Conditions for T921, T922, or T922R control settings.
Waveforms below were monitored with a Tektronix 7704A Oscilloscope, 71371 Time Base, 7A15A Amplifierand 10X probe .
The oscilloscope input coupling was set to ac . Waveforms may vary as much as ±20% .
A 1 kHz, 50 mV sine wave was applied to CH 1 input and a 1 kHz, 50 mV square wave was applied to CH 2 input . A Tektronix
FG 501 Function Generator provides either of the input waveforms .
The T921, T922, or T922R controls were set as follows: VOLTS/DIV (both) 20 mV
AC-GND-DC (both) DC
Vertical Mode DUAL TRACE
SOURCE LINE
MODE AUTO'
SLOPE +OUT
SEC/DIV .5 ms
The other controls were set as needed to obtain a display .
"For waveforms 5 and 6, the MODE switch was set to TV .
To obtain voltages and waveforms on the Horizontal board, the Vertical Amplifier must be operated separately from
the instrument, using a Vertical Amplifier Extender Troubleshooting Fixture. See Troubleshooting Equipment and
Vertical Amplifier Replacement in the Service Information section of this manual .
VIII. 3
VOLTAGE CONDITIONS
WAVEFORM CONDITIONS
NOTE
Waveforms are for T922 unless otherwise noted.
NOTE
1982-24