Data Sheet

5
Simultaneous Long-Term Monitoring and Transient Recording (REC&MEM)
Recording Directly to Hard Disk or Other Storage Media (Real-Time Save)
n Maximum recording time for REC&MEM function
Timebase
Sampling
Period
No. of recording channels Max. recording time (typical)
HDD PC card HDD PC card (512 MB)
5μs/DIV to 50μs/DIV
- abbreviated - not applicable not applicable not applicable not applicable
100 μs/DIV 1μs 1ch
not applicable
8h 19min 17s
not applicable
200 μs/DIV 2μs 1ch
not applicable
16h 38min 34s
not applicable
500 μs/DIV 5μs 2ch 1ch 20h 48min 10s 20min 55s
1 ms/DIV 10μs 4ch 2ch 20h 48min 10s 20min 40s
2 ms/DIV 20μs 10ch 4ch 16h 38min 20s 20min 20s
5 ms/DIV 50μs 24ch 8ch 17h 17min 30s 24min 20s
10 ms/DIV 100μs 33ch 20ch 1day 1h 8min 20s 16min 40s
20 ms/DIV 200μs 33ch 33ch 2days 2h 16min 40s 16min 40s
50 ms/DIV to 5 min/DIV - abbreviated - - abbreviated -
- abbreviated - - abbreviated - - abbreviated -
• Conditions: the hard disk or PC Card have just been formatted, and any recording length setting is set to
maximum. The timebase of the whole (compressed) waveform is set automatically, and the upper limit of
recording time is one year
• Recording time depends on the formatted capacity of the recording media and its available capacity, with
the above being just one example.
Capture High-Speed Signals by Triggering During Slow Recording
- New REC&MEM Function and Real-Time Saving -
n Transient waveform recording that is impossible with a pen recorder
The new REC&MEM function can record high-speed waveforms such as
intermittent noise by applying a trigger while recording long-term fluctuations
just like a pen recorder. This type of measurement previously required choosing
between the Recorder function (for slow trend graph recording), or the Memory
function (for high-speed oscilloscope-style recording). Now both types of
waveforms can be recorded simultaneously using the REC&MEM function.
n Recording an Entire Waveform Anomaly
The Real-Time Save function writes measurement data to the specified
destination during measurement, enabling long-term measurements
independent of the instrument’s installed memory capacity. The destination
storage media may be the internal hard disk, a PC Card or a shared network
folder.
Simultaneously, overall measurement data
(the whole waveform) is recorded in the
instrument’s internal memory, which is then
saved to the storage media when measurement
is finished. For analysis, specify the range to
be analyzed from the overall waveform data,
and reload it. The reloaded data is used with the
Memory function for waveform and numerical
calculations, or with the FFT function for FFT analysis.
Without Scanner
Unit 8958
Memory capacity
32 M-words
Memory capacity
128 M-words
Memory capacity
512 M-words
Memory capacity
1 G-word
REC
Timebase
Sampling
Period
2,000 div 10,000 div 40,000 div 80,000 div
100 ms/DIV 3min 20s 16min 40s 1h 06min 40s 2h 13min 20s
to 100ns to to to to
30 min/DIV to
41d 16h 208d 08h - abbreviated - - abbreviated -
1 hr/DIV
83d 08h - abbreviated - - abbreviated - - abbreviated -
With Scanner Unit
8958
Memory capacity
32 M-words
Memory capacity
128 M-words
Memory capacity
512 M-words
Memory capacity
1 G-word
REC
Timebase
Sampling
Period
500 div 2,000 div 10,000 div 20,000 div
100 ms/DIV 50s 3min 20s 16min 40s 33min 20s
to 100ns to to to to
30 min/DIV to
10d 10h 41d 16h 208d 08h - omitted -
1 hr/DIV 20d 02h 83d 08h - abbreviated - - abbreviated -
n Maximum recording time for REC&MEM function (Recorder waveform)
• The setting range depends on installed memory capacity, whether Memory Division is enabled, and whether 16-Ch Scanner Unit
8958 is installed.
• Recording length "Continuous" is not available with 100 to 200 ms/div timebase setting, and with the printer enabled.
• Timebase settings from 10 ms/div to 1 s/div are not available when using A6 Printer Unit 8995-01 and numerical value printing.
• When the sampling period for Recording and Memory recording is set at the same time.
• Operation cannot be guaranteed when the time axis is longer than one year.
Memory Division is
enabled
Memory capacity
32 M-words
Memory capacity
128 M-words
Memory capacity
512 M-words
Memory capacity
1 G-word
MEM
Timebase
Sampling
Period
5,000 div 20,000 div 80,000 div 160,000 div
10 μs/DIV 100ns 50ms 200ms 800ms 1.6s
20 μs/DIV 200ns 100ms 400ms 1.6s 3.2s
50 μs/DIV 500ns 250ms 1s 4s 8s
to to to to to to
5 min/DIV 3.0s
17d 08h 40min 69d 10h 40min 277d 18h 40min - abbreviated -
n Maximum recording time for REC&MEM function (Memory waveform)
• The setting range depends on installed memory capacity, and whether Memory Division is enabled.
Maximum recording length is available when Memory Division is disabled.
• Presence of 16-Ch Scanner Unit 8958 has no effect (scanner module signals are not written to
internal memory for Memory waveforms).
• Operation cannot be guaranteed when the time axis is longer than one year.
• Minimum recording length is available when Memory Division is set to 1,024 blocks.
With Memory
Division 1024 blocks
Memory capacity
32 M-words
Memory capacity
128 M-words
Memory capacity
512 M-words
Memory capacity
1 G-word
MEM
Timebase
Sampling
Period
3 div 15 div 60 div 140 div
10 μs/DIV 100ns 30μs 150μs 600μs 1.4ms
20 μs/DIV 200ns 60μs 300μs 1.2ms 2.8ms
50 μs/DIV 500ns 150μs 750μs 3ms 7ms
to to to to to to
5 min/DIV 3.0s
15min 1h 15min 5h 00min 11h 40min
n Operating Principle of the Recorder Function
With the Recorder function, only maximum and minimum values
of the data sampled within the specified timebase are written to
memory, so each recorded data point consists of a pair of values,
with 100 such points recorded for each waveform timebase division.
Because of this, the volume of recorded data is compressed while
following steep fluctuations of the measured input voltage.
Note: When data recorded with the Recorder function is viewed on a PC, both
minimum and maximum values appear as a time series of data points.
• Recordable time for storage media depends on the instrument's installed memory capacity, and the
total and available capacity of the media. The whole waveform is displayed in real time (and printing is
disabled).
Note: Scanner Unit 8958 is not used.
REC mode recording
Waveform envelopes recorded as
pairs of maximum and minimum
values
MEM mode recording
Waveform captured with high-speed sampling
A/D
conversion
Isolation
Write on
memory
Display
Thermal Printer
Input signal
Input signal
Sampling period
Time
Input signal
A/D
conversion
Write on
memory
A4 size Printer Unit
8995
A6 size Printer Unit
8995-01
Maximum value
Minimum value