Data Sheet

13
■ Measurement Indices (optional input module types)
• Each module has two input channels.
• Besides logic modules (16 channels), Model 8847 comes standard with 16 logic inputs integrated in the
device.
Trigger functions
Trigger mode
MEMORY
(high-speed recording), FFT: Single, Repeat, Auto
RECORDER
(real-time recording) : Single, Repeat
Trigger sources
CH1 to CH16 (analog), Standard Logic 16ch + Logic Unit (Max. 3 units
48 channels), External (a rise of 2.5V or terminal short circuit), Timer,
Manual (either ON or OFF for each source),
Logical AND/OR of sources
Trigger types
• Level: Triggering occurs when preset voltage level is crossed
(upwards or downwards).
• Voltage drop: Triggering occurs when voltage drops below
peak voltage setting (for 50/60 Hz AC power lines only).
• Window: Triggering occurs when window defined by upper
and lower limit is entered or exited.
• Period: Rising edge or falling edge cycle of preset voltage
value is monitored and triggering occurs when defined cycle
range is exceeded.
• Glitch: Triggering occurs when pulse width from rising or
falling edge of preset voltage value is underrun.
• Event setting: Event count is performed for each source, and
triggering occurs when a preset count is exceeded.
• Logic: 1, 0, ×, pattern setting,
Level setting resolution
0.1% of full scale (full scale = 20 divisions)
Trigger filter
OFF, setting range 0.1 to 10.0 divisions
(MEMORY: high-speed
recording)
,
ON (10 ms fixed)/OFF
(RECORDER: real-time recording)
Trigger output
Open collector (5 voltage output, active Low)
at Level setting: pulse width (Sampling period × data number
after trigger)
at Pulse setting: pulse width (2ms)
Other functions
Trigger priority (OFF/ON), pre-trigger function for capturing
data from before/after trigger event (memory), level display
during trigger standby, start and stop trigger for recorder (real-
time recording), trigger search function
FFT function (function available from version 2.00 or later)
Analysis mode
Storage waveform, linear spectrum, RMS spectrum, Power
spectrum, Density of power spectrum, Cross power spectrum,
Auto-correlation function, Histogram, Transfer function, Cross-
correlation function, Impulse response, Coherence function,
1/1 Octave analysis, 1/3 Octave analysis, LPC analysis, Phase
spectrum
Analysis channels
Selectable from all analog input channels
Frequency range
133 mHz to 8 MHz, External, (resolution 1/400, 1/800, 1/2000,
1/4000)
No.of sampling points
1000, 2000, 5000, 10000 points
Window functions
Rectangular, Hanning, Hamming, Blackman, Blackman-Harris,
Flat-top, Exponential
Display format
Single, Dual, Nyquist, Running spectrum
Averaging
function
Time axis / frequency axis simple averaging, Exponential
averaging, Peak hold (frequency axis),
Averaging times: 2 times to 10,000 times
Print functions
Same as the Memory function (partial print not available)
Measurement
target
With use input unit Measurement range Resolution
Voltage
ANALOG UNIT 8966
100 mV f.s. to 400 V f.s. 50 µV
HIGH RESOLUTION UNIT 8968
100 mV f.s. to 400 V f.s. 3.125 µV
DC/RMS UNIT 8972
100 mV f.s. to 400 V f.s. 50 µV
Current
* Use with optional
current sensor
*When driving
current sensors with
separate power supply,
measurement can
be conducted with
voltage input units.
CURRENT UNIT 8971
With current sensor 9272-10
(20A), 9277
20 A f.s. 1 mA
CURRENT UNIT 8971
With current sensor 9272-10
(200A), 9278, CT6863
200 A f.s. 10 mA
CURRENT UNIT 8971
With current sensor CT6862
50 A f.s. 2 mA
CURRENT UNIT 8971
With current sensor 9279,
9709
500 A f.s. 20 mA
RMS AC voltage
DC/RMS UNIT 8972
100 mV f.s. to 400 V f.s. 50 µV
Temperature
(thermocouple input)
TEMP UNIT 8967
200 °C f.s. to 2000 °C f.s.
Note: Upper and lower limit values depend
on the thermocouple
0.01 °C
Frequency,
rotation
FREQ UNIT 8970
20 Hz f.s. to 100 kHz f.s.
2 (kr/min) f.s. to 2000 (kr/min) f.s.
2m Hz
0.2 (r/min)
Power frequency
FREQ UNIT 8970
40 to 60 Hz, 50 to 70 Hz,
390 to 410 Hz
0.01 Hz
Pulse count
FREQ UNIT 8970
40 k counts f.s. to 20 M counts f.s.
1 count
Pulse duty ratio
FREQ UNIT 8970
100 % f.s. 0.01 %
Pulse width
FREQ UNIT 8970
0.01 s f.s. to 2 s f.s. 1 µs
Vibration/stress
STRAIN UNIT 8969
400 με f.s. to 20000 με f.s. 0.016 με
Relay contacts,
voltage on/off
LOGIC UNIT 8973
— —
■ Maximum Recording Time for the Memory Function
• Operation cannot be guaranteed when the time axis is longer than one year.
• Setting recording length to an arbitrary value allows increasing the 200,000 division limit up to a
maximum of 320,000 divisions in 1 division units.
■ PC Software Specifications Note: With use of the 8847 , Wv ver 1.26 or later
Wave Viewer (Wv) Software (Application disk CD-R, bundled accessory)
Functions
• Simple display of waveform file
• Text conversion: convert binary data file to text format,
with selectable space or tab separators in addition to CSV,
and specifiable section, thinning available
• Display format settings: scroll functions, enlarge/reduce
display, display channel settings
• Others: voltage value trace function, jump to cursor/trigger
position function
Compatible PC
operating systems
Windows 95/98/Me, Windows NT 4.0 (SP3 or later), 2000,
XP
Maximum recording time
increases depending on
number of channels used
Analog 16 ch
+ internal Logic 16 ch
Analog 8 ch
+ internal Logic 16 ch
Analog 4 ch
+ internal Logic 16 ch
Analog 2 ch
+ internal Logic 16 ch
Logic 48 ch
+ internal Logic 16 ch
Time axis
Samp.
period
20,000 div 50,000 div 100,000 div 200,000 div 100,000 div
5μs/div 50ns 100ms 250ms 500ms 1s 500ms
10μs/div 100ns 200ms 500ms 1s 2s 1s
20μs/div 200ns 400ms 1s 2s 4s 2s
50μs/div 500ns 1s 2.5s 5s 10s 5s
100μs/div 1μs 2s 5s 10s 20s 10s
200μs/div 2μs 4s 10s 20s 40s 20s
500μs/div 5μs 10s 25s 50s 1min 40s 50s
1ms/div 10μs 20s 50s 1min 40s 3min 20s 1min 40s
2ms/div 20μs 40s 1min 40s 3min 20s 6min 40s 3min 20s
5ms/div 50μs 1min 40s 4min 10s 8min 20s 16min 40s 8min 20s
10ms/div 100μs 3min 20s 8min 20s 16min 40s 33min 20s 16min 40s
20ms/div 200μs 6min 40s 16min 40s 33min 20s 1h 06min 40s 33min 20s
50ms/div 500μs 16min 40s 41min 40s 1h 23min 20s 2h 46min 40s 1h 23min 20s
100 ms/div 1 ms 33 min 20 s 1 h 23 min 20 s 2 h 46 min 40 s 5 h 33 min 20 s 2 h 46 min 40 s
200 ms/div 2 ms 1 h 06 min 40 s 2 h 46 min 40 s 5 h 33 min 20 s 11 h 06 min 40 s 5 h 33 min 20 s
500 ms/div 5 ms 2 h 46 min 40 s 6 h 56 min 40 s 13 h 53 min 20 s 1 d 03 h 46 min 40 s 13 h 53 min 20 s
1 s/div 10 ms 5 h 33 min 20 s 13 h 53 min 20 s 1 d 03 h 46 min 40 s 2 d 07 h 33 min 20 s 1 d 03 h 46 min 40 s
2 s/div 20 ms
11 h 06 min 40 s 1 d 03 h 46 min 40 s 2 d 07 h 33 min 20 s 4 d 15 h 06 min 40 s 2 d 07 h 33 min 20 s
5 s/div 50 ms 1 d 03 h 46 min 40 s 2 d 21 h 26 min 40 s 5 d 18 h 53 min 20 s 11 d 13 h 46 min 40 s 5 d 18 h 53 min 20 s
10 s/div 100 ms 2 d 07 h 33 min 20 s 5 d 18 h 53 min 20 s 11 d 13 h 46 min 40 s 23 d 03 h 33 min 20 s 11 d 13 h 46 min 40 s
30 s/div 300 ms 6 d 22 h 40 min 00 s 17 d 08 h 40 min 00 s 34 d 17 h 20 min 00 s 69 d 10 h 40 min 00 s 34 d 17 h 20 min 00 s
50 s/div 500 ms 11 d 13 h 46 min 40 s 28 d 22 h 26 min 40 s 57 d 20 h 53 min 20 s 115 d 17 h 46 min 40 s 57 d 20 h 53 min 20 s
100 s/div 1.0 s 23 d 03 h 33 min 20 s 57 d 20 h 53 min 20 s 115 d 17 h 46 min 40 s 231 d 11 h 33 min 20 s 115 d 17 h 46 min 40 s
1 min/div 600 ms 13 d 21 h 20 min 00 s 34 d 17 h 20 min 00 s 69 d 10 h 40 min 00 s 138 d 21 h 20 min 00 s 69 d 10 h 40 min 00 s
2 min/div 1.2 s 27 d 18 h 40 min 00 s 69 d 10 h 40 min 00 s 138 d 21 h 20 min 00 s 277 d 18 h 40 min 00 s 138 d 21 h 20 min 00 s
5 min/div 3.0 s 69 d 10 h 40 min 00 s 173 d 14 h 40 min 00 s 347 d 05 h 20 min 00 s 694 d 10 h 40 min 00 s 347 d 05 h 20 min 00 s