Tektronix 2247A

Operators Familiarization
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 Is displayed. CH1 Is considered the lowest numbered channel, and
ADD Is considered the highest numbered channel.
NOTE
The last measurement is Initialized to | SEC >| at power on
when the memory-backup battery is dead or has just been
replaced. If the battery is dead, refer the instrument to a
qualified service person to have it replaced.
Channel 1 and Channel 2 Voltmeter
Press VOLTMETER CH1/CH2 button to display the first page of menu
choices. The selected measurement mode Is shown by an underlined menu
item. Tracking cursors (measurement, ground, or trigger level) may be
displayed to show the measurement points on the displayed signal (see
Conditions for Cursor Display) .
If a single channel (CH 1 or CH 2) Is selected for display, It becomes the
default measurement source channel. When neither channel is being dis-
played when a Voltmeter measurement Is selected, or recalled by the LAST
MEAS'MT button, CH 1 Is turned on as the default channel. If both CH 1
and CH 2 are being displayed, the default measurement source channel
upon each Initialization Is also CH 1. Use the SET MEAS’MT CHANNEL
function
to
assign
CH
2
as
the
measurement
channel.
Turn
off
the
CH
1
display If CH 2 Is the desired default measurement source channel. If both
CH
1
and
CH
2
are
turned
off
while
the
Voltmeter
measurement
Is
active,
the error message “VOLTMETER SOURCE: CH 1 OR 2 ONLY” will be dis-
played and the voltmeter measurement will be canceled.
Only
one
active
measurement
Is
allowed
at a
time.
The
name
of
the
active
measurement
and
measured
value
are
displayed
at
the
top
of
the
screen.
A
measurement
Is
canceled
with
no
message
when
the
Horizontal
Mode
is
changed
to
a
mode
Incompatible
with
the
active
measurement
mode.
See
Table 3-1 in “Behavior for Horizontal MODE Changes” for compatible
modes.
If
a
+PEAK,
-PEAK,
or
PK-PK
Volts
measurement
is
selected
when
hori-
zontal
mode
Is
elther
ALT
or
B,
Cursor
Knob
Allocation
Menu
1
is
displayed,
2247A Operators
ES
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Cad