BK Precision 5105B, Instruction Manual, Page: 27 / 48

27
Subject to change without notice
4.2 Under remote control this pushbutton will be illuminated.
After pressing the pushbutton, control is returned to the front
panel.
ANALOG/DIGITAL
Switches between analog (green) and DSO modes (blue). The
operating mode (Yt or XY) will not be affected. If component
test mode was selected, possible only in analog mode, and
the scope is switched to digital the operating mode last used
when in DSO mode will be reinstalled.
Y parameters will not be changed by the switching. Time base
modes will be changed due to the different operation of the
time bases in both modes. After any switching time base A
will be selected. The time base speeds selected will not be
affected unless they are not available any more, then the
maximum value will be chosen.
RUN/STOP
This pushbutton has several functions:
6.1 Analog mode, single sweep
The RUN/STOP pushbutton is used to set the time base for a
single sweep. Press MODE
and activate ”Single“ in this
menu. By pressing RUN/STOP the scope will wait for the next
trigger indicated by STOP blinking. After a signal triggered
the time base and the sweep is over the scope will stop,
indicated by STOP continuously illuminated. Each time the
pushbutton is depressed the scope will be activated anew for
one trigger resp. one sweep.
6.2 DSO mode, single capture
In order to prepare the scope for a single capture press MODE
and select ”Single“ in the menu presented. By pressing
RUN/STOP the scope will start to continuously acquire and
store so that later also the signal preceding the occurrence of
the trigger (Pre-trigger) will be available. STOP will blink in
order to signal that as yet no trigger was recognized. Upon
receipt of a trigger the acquisition will be completed so the
signal following the trigger (Post-trigger) will later be available,
too. STOP will then remain illuminated. The signal display on
the screen will be frozen. Pressing RUN/STOP again will
prepare for another acquisition as described. Each new
acquisition will overwrite the preceding one.
In order to leave this mode enter the MODE menu and select
”Auto“ or ”Normal“.
6.2.1 DSO mode, ending or interrupting a capture.
Any capture in progress may be stopped by pressing RUN/
STOP.
6.2.2 DSO mode, reset function.
Pressing RUN/STOP twice in ”env“ (Envelope) or ”avg“ (Ave-
rage) mode, where the signal display is the result of more
than one signal data acquisition, causes the previous signal
capture results to be deleted and a new start of the signal
capture.
MATH
Only available in DSO mode.
This pushbutton calls the ”Mathematics“ menu and the
”Formula editor“. With the ”Mathematics“ menu stored signals
may be mathematically processed, either directly or with
reference to other stored signals. The results may be
graphically displayed on the screen and determined by the
cursor functions.
All entries and settings will be automatically stored upon
leaving the Mathematics menu or turning the scope off.
Measurement results will be lost after turn-off.
”Mathematics“ offers:
7.1 Equations set
Using the INTENS knob 5 sets of formulas can be selected
for editing. This way 5 user-defined formula sets may be
created.
Each set of formulas consists of 5 lines with one equation each,
designated MA1 to MA5. An equation may occupy one or more
lines. In this case it has to be kept in mind that the lines of
equations are processed as a stack, i.e. starting with MA1 =
1
st
line to MA5 = 5
th
line.
STOP
Please note:
That formula set is valid which is shown prior to
leaving the MATH menu.
7.2 Edit
”Edit“ opens the ”Mathematics Edit“ submenu.
7.2.1 Equation
5 equations may be selected with the INTENS knob . Each
equation consists of the name of a result (e.g. MA5), the
= sign, the function (e.g. ADD) and (first operand, second
operand). Remark: The second operand will not be displayed
with all functions.
7.2.2 Function
By using the INTENS knob , the following functions may be
selected :
ADD: Operand 1 + operand 2
SUB: Operand 1 – operand 2
MUL: Operand 1 times operand 2.
DIV: Operand 1 divided by operand 2.
SQ: Operand 1 squared.
INV: Changes sign of operand 1.
1/: Calculates 1/operand 1 (reciprocal value).
ABS: Takes absolute value of operand 1 (removes sign)
POS: Only values of operand 1 > 0 are displayed, < 0 will
not be displayed.
NEG: Only values of operand 1 < 0 are displayed, > 0 will
not be displayed.
7.2.3 Operand 1
The INTENS knob allows the selection of these signals as
operands:
CH1: CH1 signal.
CH2: CH2 signal.
RE1: Signal from reference memory 1
RE2: Signal from reference memory 2
MA1: Result of equation named MA1.
MA2: Result of equation named MA2
MA3: Result of equation named MA3.
MA4: Result of equation named MA4
MA5: Result of equation named MA5.
The next step after MA5 causes the display ”Edit”. Calling ”Edit“
opens a sub submenu described under item 7.2.5.
7.2.4 Operand 2:
The INTENS knob allows the selection of the same
operands as mentioned under item 7.2.3 (Operand 1) if ADD,
SUB, MUL or DIV function is chosen.
C o n t r o l s a n d R e a d o u t