MR8740T_Quick guide_eng_20191016H.pdf - 第107页
101 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…
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)
101
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
102
Specications of the Options
Effect of radiated
radio-frequency
electromagnetic eld
±15% f.s. (max.) at 3 V/m
Effect of conducted
radio-frequency
electromagnetic eld
±45% f.s. (max.) at 3 V (in the 2 V f.s. range, with 1 V DC applied)
Standards Safety: EN61010
EMC: EN61326 Class A