Protek B-810 - Counter (¡NT;EXT)

2) Counter (INT/EXT)
FREO.
RANGE
1
51K.0
1
S
G x10 x100x
x1,
X13
OF xo. 1'>-X100K
xo.
01‘\
XM
FREQJSTOP
FREO.
ws
6.015
Fig. 3-6.
(1) Display Features
A. GATE indicator: Displays the opened or closed state of the GATE.
When gate is open, indicator willbe lit.
B. OVERFLOW indicator
C. KHz annunciator
D. Hz annunciator
E. GATE time selector switch (EXTERNAL COUNTER): 0.018, 0.1S, IS, 106 switch
selectable
(Z) Operating Characteristics
A. Internal counter: The Fig. 3-1 selectorswitch (14 J. )is generatorrangedfrequency
with the switch remained and reading.
B External counter: The Fig. 3-1 selector switch (14 J. )press the extemal frequen-
cy
to
the
ON
position.
C. External counter IN (15 BNC) characteristics
Gi. Frequency range: 0.1Hz to 10 MHz
Input sensitivity: 50mv rms
lmpedance: approx,1M9 less then 35pF
Max input voltage: 250V (DC+AC rms)
C-2.
GATE
time:
0.018,
0.18,
1S,
108
switch
selectable
0.018:
10
Hz
resolution
0.1S:
10
Hz
resolution
1S: 1 Hz resolution
108: 0.1 Hz resolution
I3)Waitabout20'rnlnr.rtesforcorractmeasurementuntilthe
stal
in cry ovengeneratorgets
-13-
¿sum-j
i
h.“ “y”rw, wav,“ las-H4!» «es-Mew; “"WWW'v-M,