Data Sheet

2
For operation analysis of power control systems such as inverters
- Application Examples -
The 8855 can be used to observe various inverter
waveforms. To provide stable measurement of
voltage waveforms, the 8855 uses high-frequency,
noise-resistant CMRR and maintains high floating
voltages with isolated inputs. When observing current
waveforms, you can install a special amplifier unit
for current measurement that allows you to use a
supersensitive, broadband clamp-on probe
to perform measurements without
breaking the electric circuit.
When performing engine characterization analysis,
the 8855 is ideally-suited to measuring waveforms
derived from boost pressure, oil pressure, air-fuel ratio,
ignition timing, rotation speed, or injector opening. The
8855 also has an expanded memory for storing large
quantities of data taken in various conditions. The 8855
can be used to observe pressure waveforms, such
as those for fuel injection lines or jet pumps, and then
compare them with standard waveforms.
Inverter switching waveforms
Automobile research and development
I want to observe carrier and basic waveforms
simultaneously with high-speed switching, such
as inverter waveforms
I'd like to observe the load fluctuation waveforms
that result when power is turned on or off
simultaneously with the control logic signals
HIOKI has met these requests by providing the
MEMORY HiCORDER 8855 with isolated input for
all channels, a sampling rate of up to 20 MS/s, digital
conversion with a resolution of 12 bits, and the ability
to measure up to 8 analog and 16 control logic channels
simultaneously.
I'd like to view waveforms that occur during the 5
seconds after the power is turned on and the device
stabilizes
I want to record data for all sporadic abnormalities
that occur during automobile testing without using
triggers
In response to these requests, the MEMORY HiCORDER
8855 supports large-capacity memory, which can be
expanded to up to 512 megawords (1 GB). Even at a sampling
rate of 20MS/s, the 8855 can record for up to 12.8 seconds
(2 channels, with a maximum of 256 megawords/channel) of
data.
Use the optional F/V conversion input unit
to observe control and rotation signals as
waveforms, or the temperature input unit for
thermocouple measurements. Depending on
your application needs, select from a wide
array of input units to configure your ideal
measurement system.
Compatible with F/V and temperature input
When reco r di ng enve lo pe wave fo rm s i n
recorder mode, the 8855 can be used to capture
sporadic signal waveforms in memory mode.
Recorder and memory function
(available from version 2.00 of this unit)
When observing waveforms using an analog
oscilloscope, you can slow down the sweep rate
to view the entire waveform or speed it up to
zoom in on the waveform. However, you can
only observe enlarged waveforms following a
trigger point. As you observe waveforms, you
can use the zoom function to enlarge selected
points on the waveforms.
Zoom function
Engine
Voltage, current,
temperature, pressure,
vibration, rotation speed,
etc.
All measurement data
can be stored in installed
internal memory.
Because of the large
amount of free memory,
you can acquire
waveforms over an
extended period.