Menu Controls - Tektronix 2247A Operator's Manual

Controls, Connectors, and. Indicators
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CLEAR DISPLAY-Clears displayed menus, measurement functions,
and cursor functions In the following order:
1. Menu display (Service, Measureme:,t, and Store/Recall Setup
menus).
2. Measurement function (including TRACK MEASMT cursors If
displayed).
3. TRACK TRIG L VL and TRACK
m.
SET
CLEAR MEAS'MT LAST VOLT- CURSOR
,
~r~ANNEL ME~.,.,
SLJi
MEAS 'MT - -
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CURSORS
45 46
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TIME
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2-22
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6373-09A
Figure 2-7. Menu controls.
2247 A Operators
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®
Controls, Connectors, and Indicators
SET MEAS'MT CHANNEL-Displays menus for setting
measurement-source channels for active measurement modes.
There are two one-page menus available; one for voltmeter and
rise/fall measurements, and one for single-channel Counter/Timer
measurements. Two-channel measurements, such as delta time,
frequency ratio, and propagation delay, have two-page menus. Each
menu lists all valid input channels that can be selected for that
measurement mode.
If the SET MEAS'MT CHANNEL button is pressed for an invalid mode ,
one of the following messages will be displayed for two seconds:
1. SELECT A MEASUREMENT -When no measurement mode is
active.
2. NO MEAS CHANNEL NEEDED-When a selected measure-
ment mode ( such as cursor time) does not require a measure-
ment channel to be set.
When a SE•T MEAS'MT GHANNEL menu Is displayed, changing the
Horizontal MODE, except between ALT and B, clears the menu.
LAST MEAS' MT -Recalls the last active measurement mode to the
dis. p lay and resets the measurement clilannel. If the last active -
measurement mode Is already displayed when the LAST MEAS ' MT
button Is pressed, only the measurement channel I~ reset.
The measurement channel for VOLTMETER, CURSOR VdLTS, and
RISE or FALL measurement modes Is set to CH 1, If CH 1 Is
displayed, otherwise to CH 2. If neither CJ-i 1 nor CH 2 Is displayed,
CH 1 will be turned on and will be the measurement channel.
The measurement channel for single-channel Counter/Timer
measurements Is set to the lowest number displayed channel ( may be
set to CH 1 , CH 2, CH 3, CH 4, or ADD) . ,
Measurement channels for time measur~ment modes (ALT and B
Horizontal modes) and dual-channel Counter/Timer measurements
are set to the lowest number displayed channel for the delay time ( or
B source 1 ) and the next lowest number displayed channel for the
delta-delay time, ( or B source 2) if more than one channel Is
displayed. Both are set to the same channel when only one channel Is
displayed. CH 1 Is considered the lowest numbered channel, and ADD
Is considered the highest numbered channel.
2247A Operators 2-23