Philips 6652C - Description of Controls

DESCRIPTION OF CONTROLS
=-=:_::_ _ _
PM 6654C programmable high resolution timer/counter 2ns s in g les ho t r es o l u ~Oil
r-EXP-, Hz
s
v
GATE
FR£Q A
FREQ C
PERIOD A
RATIO A,/8
RATIO C/8
TIME A-s
P WIDTH A
PHASE A-B .,
RISE/FALL A
DUTY FAC:T A
TOT A/F'\.8
TOY A/J\....l\.8
TOT AlMAN
Vmax Vmin
Vpp A
TE6T
START/STOP
TOTA~IZE A
D
r-MATH--,
DISP=K·XH
F.1
I.!.:Jl
,--HOLD OFF---,
5~,Js•1ms ,..
1rns-200ms ......
r- MEASURING TIME--,
DISPLAY TII\IIE
r- FUNCTION---,
•D•
•D•
LOCAL/RESET
K;
ON
D
.
D
[[!]
POWER
L=
READ
DISPl
HOlD
G
READ
MINIMUM I
SINGlE
0.1s 1s-
10ms f1f\ 10s [!]
v .&
STORE
.ON w rn
.. STBY .
D
GJ
MIN MAX
G
1m~ 96s I
0, 1msl._____.
Gl
SET VIA KEYBOARD
The following is a brief description of the
various controls and "control groups" on the
PM 6652-54 front and rear panels.-• Information on
the way ih which the controls are applied to
measurement is given in the chapter "Practical
Measurement".
POWER ON/ST BY
Note: this is a secondary power switch, in the
out (ST BY) position , power is supplied only to
the oven stabilising circuit (when an oven sta-
bilised oscillator is fitted). See "Installa-
tion" for a description of the power on self
test.
LOCAL/RESET*
A short depression of the LOCAL/RESET button
makes the counter switch from remote to local
mode. If the button is depressed longer than
400 ms, it also activates the RESET function.
RESET interrupts measurement, clears the display
and certain control states. Will not cancel pre-
set trigger or mathematical values.
* The button i s only a RESET button on the
PM 6652, 54. Switching to local can only be
performed from
the IEEE-488 bus.
START/STOP TOTALIZE A
Used when the function is TOT A/MAN, this con-
trol s tarts and stops the "event counting".
MATHematical constants
K and L are mathematical constants supplied by
the user, and used in the formula DISP:::KxX+L
when the DISP:::KxX+L key is selected (LED on).
The measured result will be modified by K and L
before displayed. K and L are set by pressing
K= and/or L= , entering the value on the key pa-
nel, th en pressing ENTER. Any further depression
of K= or L= will show the last values entered,
and will set the ENTER light on. RESET will can-
cel the ENTER, but will not change the previous
values of K and L.
Unless stored in a stored panel program, any va-
lu es set for K and L will reverty to 1 and 0 re-
spectively when power is switched to ST BY.
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