Fluke 9500B - Square Operation

Section 4: Using the Model 9500B — Current Function 4.10-3
Final Width = 215mm
Descriptions assume 9500B/1100
1
2
5
1.Ø
5
2
1
1.Ø
4.10.5.2 Right Side Screen Keys —
Direct Edit
Right side screen keys operate on the value in
the edit box, and acting in place of the ↵ key,
exit from Direct Edit back to Digit Edit; then
set the value as evaluated in the box:
Cursor on Deviation:
% Evaluates the number in the box in
Deviation Percentage.
A Evaluates the number in the box in
Amps.
mA Evaluates the number in the box in
Milliamps.
µA Evaluates the number in the box in
Microamps.
4.10.5.3 Bottom Screen Keys —
Digit and Direct Edit
WAVE Provides a second menu screen
FORM for selection between three Square
waveshapes or ±DC.
(paras 4.10.4.2-3).
CHANNEL Permits the screen signal setup to
SELECT be routed to any of the five heads,
allowing selection of trigger
channel, trigger ratio and cable
channel (paras 4.5.3).
Press to select Direct Mode (paras
4.4.4/5).
Press to select Scope Mode (setting
the step sequence to '1, 2, 5' or
'1, 2, 2.5, 4, 5' as chosen using the
Preferences key) (paras 4.4.1/2).
4.10.6.1 Value Editing
Amplitude
At maximum and minimum output currents,
the screen settings of the contributors' values
(units/division, scaling multiplier and
deviation) are limited by the output current
itself. For example:
Contributor Limits
Minimum Maximum
Units/Division 20µA/div 50mA/div
Scaling Multiplier 1 10
Deviation -11.20% +11.20%
Output Current 88.8µA p-p 111.2mA p-p
Limit
Provided they do not exceed the output current
limits shown, the contributors have the
following adjustments (Scope mode):
a . Units/Division in Amps/division
(adjustable sequence: 1-2-5 or 1-2-2.5-4-
5; default 1mA).
b . Scaling Multiplier (adjustable through
integers 1 to 10; default 4).
c . Percentage Deviation (a maximum range
of ±11.20% about the value of (
a ) x ( b ), at
a resolution of four significant digits, with
two decimal places; default zero). Digit or
direct edit can be used.
d . Output Current (adjustable only by
manipulation of (
a ), ( b ) and ( c ); default
4.0000mA).
4.10.6 Square Operation
continued overleaf →
4.10.6.2 Output Current Editing
The 'Digit' and 'Direct' editing processes follow
the same general rules as for editing currents
described in paras 4.4.
Tab
Key and Cursors (Scope Mode)
Repeatedly pressing this key moves the cursor
from the default units/division to the Multiplier,
then to the Deviation and back to the units/
division. The type of cursor at each position
indicates the type of adjustment possible.
Units/Division (Scope Mode)
The type of cursor (barred) used for the units/
division signifies that the value can be adjusted
only as a step-sequence value using the


and


keys. The

and

keys are
inactive.
From the default '1mA/div', the value can be
raised using the


key by increments through
2mA/div, 5mA/div, 10mA/div and so on up to
50mA/div, providing that the other contributors
will not take the output current value above
111.2mA p-p. Similarly, the


key will
reduce the Units/Division down to 20µA/div,
unless the output current would fall below
88.8µA p-p.
Multiplier (Scope Mode)
Again the

and

keys are inactive.
From the default 'x 4', the value can be changed
using the


and


keys, by single integer
increments to values between 1 and 10,
providing that the other contributors do not
take the output current value out of its limits.
The product of the units/division and multiplier
are shown on the right side of the '=' sign.