Philips 6652C - Page 18

11 Press READ. The values on the display are the
trigger levels for AUTO mode. There is no
input signal, so they will both be 0.01V (or,
possibly, varying between 0.01 and 0.02).
12 Press AUTO (LED goes off). The trigger levels
shown now' are those set on the two variable
potentiometers . Turn them.
13
Press KEYBOARD. The values on the display are
the "keyboard" trigger I eve 1 values (they
should be zero). Enter two ne.w values.
14 Press SET A. The ENTER light on the keyboard
will qlow steadily. Make an entry, noting
that the enter LEO begins flashing as soon as
the first digit is entered. When complete,
press ENTER (RESET clears ENTER at any time
up to that last p re ss). Now set B.
15 The v alues entered on the keyboard wi 11 be
used whenever
KEYBOARD is selected.
16 Turn the power off, then on again.
17 Select KEYBOARD and READ. The "keyboard"
trigger levels have been lost (they were ne-
ver put into a program- that comes later).
,-- MEASURING TIME---,
DISPLAY TIME
DISPL
HOLD
Gl
READ
Gl
0. 1s 1s
10ms C) 10s
1m s 96s
0 . 1msl
MINIMUM/
SINGLE
G1
&.
I
18 Move to the MEASURING TIME group of controls.
Press READ, then rotate the variable poten-
tiometer.
19 Press CHECK. This applies the internal refe -
rence signal ( 10MHz) to the logic circuits.
20 This display shows the 10MHz signal with a
r
eso lution that varies as the measuring time
is changed with the potentiometer.
21 Set the potentiometer t o the lowest possible
measuring time and observe the display.
22 Press MINIMUM/SINGLE the resolution becomes
worse, because
the measuring time is now only
1~s (6652) or 2~s (6654). Note that the MINI-
MUM/SINGLE measuring time cannot be shown on
the display (the time that a ppears when READ
is pressed wit.h MINIMUM/SINGLE on is the
display time from the potentiometer).
r:-MATH-,
DISP = K· X+L
D
-
L=
D
SET VIA KEYBOARD
23 Set MINIMUM/SINGLE off, and move to the MATH
controls. Press OISP: K x X + L. The display
should be exactly as before (no change in
va]ue).
24 Make the function FREQ A.
25 Press K=, then enter some value on the key
panel. When ENTER is pressed, the displayed
result will be changed by the K multiplier.
Set an L (addition) value, and change K to an
exponential value.
26 Setting an exponent is the same as on a cal-
culator: enter the base value, press EE, then
enter the exponent. Press ENTER to fin ish the
entry.
27 Note that whenever the power wa s switched
off and on again, any v alues entered are
lost, and any controls, other than AC coup-
ling and AUTO go out. If the operator has set
up a complicated panel con figuration and
there is a line failure, all those controls
and values will have to be set up again. This
is one good reason for the use of the func-
tion "Stored Panel Programs".
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com