Signals Out; Figure 1-6. Location Of Calibrator Jumper On Storage Circuit Board - Tektronix 7623A Instruction Manual

Operating Instructions—7623A/R7623A Operators
at the 40 mV and 0.4 V pin jacks and approximately 450 ohms at the 4 V pin jack.
CURRENT
A 40-milliampere, one-kilohertz output current is provided when the optional current-loop accessory
(Tektronix Part No. 012-0259-00) is connected between the 4 V pin jack and ground. This output can be
used to check and calibrate current-measuring probe systems.
WAVESHAPE
The square-wave outputsignal of the calibrator can be used as a reference waveshape when checking
or adjusting the compensation of passive, high-resistance probes. Since the square-wave output from the
calibrator has a flat top, any distortion in the displayed waveform is due to the probe compensation. Dc
voltage output is also available by changing a jumper on the calibrator board; see Figure 1-6.
SIGNALS OUT
VERTICAL SIGNAL
The VERT SIG OUT connector provides a sample ofthe vertical deflection signal. The source of the
output signal is determinedby the TRIG SOURCE switch. The source will follow the setting of the TRIG
SOURCE switch. When the TRIG SOURCE is in the VERT MODE, the output will follow the VERT MODE —
switch. In the CHOP mode,the signals are added. The output signals are LEFT, ALT, ADD, and RIGHT.
The output signal into 50 ohmsis about 25 millivolts/division of the vertical signal displayed on the crt. The
output into one megohm is about 0.5 volt/division of the vertical signal displayed.
Figure 1-6. Location of Calibrator jumper on Storage circuit board.
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