Hioki 8835-01 - External Printing;Sampling

272
────────────────────────────────────────────────────
12.3 External Printing/Sampling
────────────────────────────────────────────────────
CAUTIO
N
To prevent damage to the unit, take care never to exceed the voltage rating of
the inputs.
Voltage range 2.5 to 5.0V HIGH level (print and sampling)
Zero to 1.0V LOW level (print and sampling)
Pulse width At least 20 ms HIGH, at least 30 ms LOW (print)
At least 0.5 μs HIGH and LOW (sampling)
Max. input voltage -5 to 10V (print and sampling)
PRINT
__________
/EXE.SMPL
10 kΩ
150 pF
2kΩ
External Printing
m
in.30m
s
HIG
H
2
.5 to 5.0
V
LOW
0
to 1.0
V
m
in.20m
s
External Sampling
HIG
H
2
.5 to 5.0
V
LOW
0
to 1.0
V
m
in.0.5μ
s
min.2
μ
s
Using the terminal
s
See Section 12.2.
1
2.3 External Printing/Sampling
・The external print/sampling terminal is used for controlling a printer or for
external sampling. External sampling can be used with the memory recorder
and FFT functions.*
・The external print/sampling terminal can be enabled as either an external
print terminal or an external sampling terminal (see Section 9.3.12).
・The external printer terminal function is enabled when a system reset is
performed.
When the external print terminal function is enabled:
・Printing starts at the falling edge (active low) of the input waveform.
・Operation is the same as the
PRINT key.
・When the time axis range (memory recorder) or frequency range (FFT*) is
set to External, the external sampling terminal function is enabled.
When the external sampling function is enabled:
・External signals are input and sampled at the desired rate.
・Sampling occurs at the rising edge (active high) of the input waveform.
・For the memory recorder function, set the time axis range to External (see
Section 4.2.2).
・For the FFT function,* set the frequency range to External.
Signal Input Procedure
Either short the terminal to ground, or apply a pulse or square wave at 2.5 to
5V (high) and 0 to 1.0V (low).