MR8740T_Quick guide_eng_20191016H.pdf - 第106页
100 Specications of Model MR8740T Time setting A date and time can be set. Number of current sensors to be connected Up to nine sensors can connect to Model 8971 Current Unit and Model U8977 3CH Current Unit in total. L…
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Specications of Model MR8740T
Waveform search
Search method
Trigger Level, window-in, window-out
Logic trigger points can be searched for when the target channel is set
to the logic channels.
Peak Maximum, minimum, maximal, minimal
Concierge Histogram or standard deviation (For each of them, a target for
comparison can be chosen between the fundamental waveform and
the previously observed waveform.)
Jump Event mark, cursor, time (specied by an absolute time, a relative time,
or the number of points), trigger point, search mark.
Search range All: Whole data stored in the internal memory
Section
designation:
Either one of the areas between cursors A and B and between cursors
C and D is chosen.
Number of points to
be searched for
Up to 10,000 points
Continuous search When the scope of search is found to include retrieved data points more than the specied
number after the search, the instrument can continuously search waveform data points
after the last retrieved data point.
Display method Displays the search result specied as a search position.
Others
Auto-range Available
The instrument automatically selects a sampling rate and measurement range appropriate
for an input waveforms.
(Not available when the external sampling is used.)
Beep sound Three levels are available:
• Off
• Alert
• Alert+Action
Email transmission Email transmission function using SMTP
Transmission timing: When data is automatically saved; when data is saved by clicking the
SAVE icon
Contents of email: The text entered in the Body box is included and a le in the format
specied in the Type box is attached.
Initialization Discarding the existing waveform data, restoring the settings to the initial values, initializing
the instrument
Self-check Memory check, LAN check, media check
Language English, Japanese
Error indication
Warning indication
The instrument displays details of an error or warning.
Time value display Time, time in sexagesimal, date, the number of data points
Zero position display On/Off
Waveform screen
background color
Black or white
Restart permission Permitted or prohibited
Permitted: When a setting is changed during a measurement, another measurement
starts.
Prohibited: Changing any settings are prohibited during measurement.
5
Specications
100
Specications of Model MR8740T
Time setting A date and time can be set.
Number of current
sensors to be
connected
Up to nine sensors can connect to Model 8971 Current Unit and Model U8977 3CH
Current Unit in total.
Limitation of the
number of modules
Model 8971 Current Unit
Model U8977 3CH Current Unit
Model 8973 Logic Unit
Up to four slots
Up to three slots
Up to three slots
Slots in which the module can be installed (slots 25, 26,
and 27)
POWER LED
indication
Green light Power-on state
Green blinking
light
During aging (30 minutes or less since powered on)
Orange light Stand-by state (the rear main-power switch is set to on)
Off The power is shut off (the rear main-power switch is set to off).
CMD ERR LED
indication
Red light A command received contains a syntax error. Send the
∗
CLS
command to
turn the LED off.
A warning is issued.
Off No error or warning is found.
DIAG LED indication
Red light An ambient temperature is too high. (> 35°C)
Purple light An ambient temperature is too low. (< 10°C)
Yellow light The CPU load rate stands at 80% or more (Updated every 0.5 seconds,
based on average load rates calculated over the period).
Blue light Waiting for a trigger.
Green light The recording is in progress.
Pink light The recording is complete.
Switches to the normal operation indication when a new command is
received.
White light During normal operation (under suspension)
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Specications of the Options
5.2 Specications of the Options
Model 8966 Analog Unit
Conditions of guaranteed accuracy
Specied under the following conditions: installed in a Memory HiCorder and operated at 23°C ±5°C (73°F ±9°F) in
the humidity range of 20% to 80% RH after a half-hour (at least) warm-up and execution of zero-adjustment.
Product warranty
period
3 years
Guaranteed accuracy
period
1 year
Number of input
channels
2 channels
Measurement range 100, 200, 400 mV f.s., 1, 2, 4, 10, 20, 40, 100, 200, 400 V f.s.
Measurement
accuracy
±0.5% f.s. (with the lter set at 5 Hz)
Temperature
characteristics
±0.06% f.s./°C
Frequency
characteristics
DC to 5 MHz −3 dB (DC-coupled)
7 Hz to 5 MHz −3 dB (AC-coupled, lower cut-off frequency: 7 Hz±50%)
Noise 1.5 mV p-p (typ.), 2 mV p-p (max.); with the highest sensitivity range and the terminals of
each input connector connected with each other
Common mode
rejection ratio
80 dB or more (at 50 Hz / 60 Hz, a signal source resistance of 100
Ω
or less)
Low-pass lter Off, 5±50%, 50±50%, 500±50%, 5 k±50%, 50 k±50%, 500 k±50% (Hz); −3 dB
Input type Unbalanced input (oating)
Input coupling AC/DC/GND
Input resistance 1 M
Ω
±1%
Input capacitance 30 pF ±10 pF (at 100 kHz)
A/D resolution 12 bits
Maximum sampling
rate
20 MS/s
Input terminals Insulated BNC terminal
Maximum input
voltage
400 V DC
Maximum rated
voltage to earth
300 V AC, DC (between each input channel and the enclosure, between any two of input
channels)
Measurement category II, anticipated transient overvoltage: 2500 V
Operating
temperature and
humidity
Consistent with the specications of the Memory HiCorder in which Model 8966 is
installed.
Operating
environment
Consistent with the specications of the Memory HiCorder in which Model 8966 is
installed.
Storage temperature
and humidity
−10°C to 50°C (14°F to 122°F), 80% RH or less (no condensation)
Dimensions Approx. 106W × 19.8H × 196.5D mm (4.17″W × 0.78″H × 7.74″D)
Mass Approx. 250 g (8.8 oz.)
5
Specications