MEMORY HiCORDER 8855 Recorder / Oscilloscope For analyzing power control system operation, digital circuits, and transient power Extended memory! An oscilloscope with 8 isolated channels High-speed sampling and expanded memory are essential for simultaneously observing switching carrier waveforms and basic waveforms. Furthermore, greater memory has been requested by users to allow measurement of sporadic and unpredictable events and signals that cannot be triggered.
For operation analysis of power control systems such as inverters - Application Examples Inverter switching waveforms Automobile research and development The 8855 can be used to observe various inverter w a v e f o r m s . To p ro v i d e s t a b l e m e a s u re m e n t o f voltage waveforms, the 8855 uses high-frequency, noise-resistant CMRR and maintains high floating voltages with isolated inputs.
20 MS/s high-speed sampling for all channels using isolated input - Functions Can I use the 8855 to measure high voltages, such as inverter output ? When measuring the difference in electrical potential between two signals that have a large overlapping common mode voltage, electric shock may result if you are not using a measurement unit with completely insulated input channels like the MEMORY HiCORDER 8855.
Perfect for inspecting storage media such as CDs, MOs, DVDs, and HDDs - Application Examples Analyzing operation of digital A/V equipment When equipped with its maximum memory capacity, the 8855 is useful for designing and analyzing digital A/V, communications, and information-related equipment, and for inspecting production lines. By observing high-speed logic signals and analog waveforms simultaneously, you can determine the control sequence at a glance.
Complete data capturing with a large capacity 1 Gbyte memory (optional) - Functions - Internal memory recording times Time axis How long can I record to the internal memory ? The 8855 comes equipped with a standard memory capacity of 32 Mwords, but you can increase this by four times (128 Mwords total) or as much as 16 times (512 Mwords total) by using the optional memory available. The maximum recording times are displayed in the table on the right according to the time axis range setting.
- Specifications - 6 Basic specifications (MEMORY HiCORDER 8855) Measurement functions MEM, REC, REC & MEM (Ver. 2.00 or later), FFT (Ver. 2.00 or later), Power Monitor (optional function, sold separately) Input type and number of channels Plug-in input modules Analog (up to 8 channels) + logic (16 channels standard) Maximum sampling rate Isolated analog channels, isolated input and frame, logic has common GND.
- Specifications - 7 Memory function Time axis Sampling period Recording length 5µs to 5 minutes/DIV (100 samples/DIV), 24 settings; external sampling (number of sampling points/DIV, desired setting), time axis zoom 2× to 10×, 3 settings; compression 1/2 to 1/100,000, 15 settings 1/100 of time axis ranges (minimum sampling period of 50ns) Standard configuration (32Mwords): 1 DIV steps possible, 30 to 100,000*3 DIV With expanded memory (128Mwords): 1 DIV steps possible, 30 to 500,000*3 DIV With expanded
■ Options (sold separately) Various input modules User-installable in any combination by insertion into the instrument. Note: Input cords are not provided. Please purchase the appropriate input cord for the probe type and application separately. ANALOG UNIT 8950 VOLTAGE/CURRENT UNIT 8951 DC/RMS UNIT 8952 HIGH RESOLUTION UNIT 8953-10 VOLTAGE/TEMP UNIT 8954 F/V UNIT 8955 Measurement type Voltage Unit Display range ANALOG UNIT 8950 100 mV f.s. to 400 V f.s. 50 µV VOLTAGE/CURRENT UNIT 8951 20 mV f.
Dimensions and mass: approx. 104.7(4.1 in)W × 28(1.1 in)H × 164.5(6.5 in)D mm approx. 160 g (5.6 oz) Supplied accessories: None (Accuracy at 23 ±5˚C (73 ±9˚F) and 30 to 80% relative humidity when zeroadjust is performed after a 60-minute warm-up; accuracy guaranteed for 1 year) VOLTAGE/TEMP UNIT 8954 Measurement functions Input Number of channels: 1 voltage or temperature measurement channel Voltage input: isolated BNC connector, thermocouple input: Plug-in terminal, Max.
Measure Power Abnormalities During Power ON/OFF or Load Fluctuations Introducing Power Monitoring Using the FUNCTION UP DISK 9549 Voltage, current, and power waveforms on the secondary side of an inverter Display of power and other parameters (calculated) By installing the power monitor function in the MEMORY HiCORDER 8855, you can monitor power transient waveforms and view power trend graphs. Use of this function requires the optional FUNCTION UP DISK 9549, which is sold separately.
Power monitor function Instantaneous power waveform display Trend graph display This function works with the single-phase two-wire, single-phase three-wire, three-phase three-wire, three-phase four-wire and DC connection modes, making it possible to measure systems ranging from four single-phase two-wire systems, to a combination of one three-phase four wire system + one single-phase two-wire system.
Configuration of options Note: Options described as ”factory-installed options” must be specified when ordering and cannot be installed by the user. Note: Product names appearing in this catalog are trademarks or registered trademarks of various companies. Input modules Input cables are not supplied. Please purchase the appropriate cable for the intended application. Install by inserting into the main unit. Can be replaced by user.
