Tektronix WFM 601i, User Manual

Page: 73 / 135

Functional Overview
Rev May 1994
WFM 601i Serial Component Monitor
2–21
the original calibration is restored, the reset readout and the function of the
buttons goes away.
The following two items appear only in the Vector/Lightning and
Waveform/Parade display modes.
Software Version Number – The lower right corner of the CRT has the
version number for the software loaded in this instrument. The software
version number is preceded by a “V”. If in doubt of the software level, check
this menu.
Coprocessor Code Version – The lower right corner of the CRT also has the
version number of the serial coprocessor code in the instrument. The
coprocessor version number is preceded by a “C”.
The GAIN menu allows a change to the vertical gain for all display modes
except PICTURE. X1, X5, and X10 fixed gains are selected by the bezel buttons
adjacent to the gain selection. Variable gain is also selected by bezel button push.
In Vector, variable gain changes both horizontal and vertical gain equally.
Lightning and Diamond displays have both horizontal and vertical variable gain.
CLEAR MENU turns off all of the menu readout, except the VAR GAIN label
(if turned on). Variable gain remains active as long as the front–panel GAIN
indicator is lit.
When GAIN is pressed to turn it off, Variable gain is returned to the calibrated
setting and the Vertical gain returns to X1.
There are five functions that can be controlled from this menu; Focus, Scale,
Intensity, Readout Intensity, and Trace Rotation. The functions of the three
assignable knobs are determined by the menu adjacent to the top bezel button.
Readout intensity can be turned below the minimum viewing level, which makes
all CRT menus disappear. If this happens, there is a method to recover. Press the
CRT menu button and note that the menu does come up, at a reduced intensity.
Pushing the top CRT bezel button once moves the cursor to READOUT and
again reduces the intensity; however, the control next to the HORIZ POS is now
the readout intensity control and turning it clockwise increases the readout
intensity.
Pressing either the CLEAR MENU or the CRT menu button exits the menus.
Gain Menu
CRT Menu