The CS448 is a 1kV isolated channel oscilloscope designed to be useful anywhere isolation is needed - in particular power electronics. The CS448 supports - via the Cscope4 application- Frequency Response Analysis (using the built in isolated signal generator), Protocol decoding, Maths, streaming, Excel and Matlab connectivity, Spectrum Analysis, mixed signal triggering and display.
The high channel common mode rejection ratio (100 dB at 50 MHz) means the CS448 can be used to measure signals such as gate drives and current sensors whose common mode is slewing quickly.
The CS448 comes complete with:
4 off 1x/10x (8/80V) 250 Mhz probes
4 off 100x (800V) 250MHz MHz probes. If you wish these can be swapped for 200 x probes (1600V 350MHz)
4 off Scope probe cable Common mode chokes to reduce high edge rate ring.
2 off isolated digital channel pods (Chan 1-4 + Chan 5-8).
Power Supply + IEC cable for your country
USB3 cable
SMA - BNC adaptor for signal generator.
SFP module for Ethernet - choose optical or copper
CD with application, data sheet and user manual. Drivers coming soon.
Install app note.
You might also like to check out the CS1110 VceSat Probe and the CS1070 Power amplifier to increase the versatility of the system.
Parameter
Specification
Notes
Analog Bandwidth
200MHz
Number of channels
4
Isolation Voltage
1kV working
Supported by IEC 61010-1 creepage and clearance, reinforced, Category III and 1.5kV Class II.
Plan to certify
CMRR
> 120 dB at 1 MHz
> 115 dB at 10 MHz
> 100 dB at 50 MHz
Done using a 20 dBV test source
ADC resolution
14 bits
Input Ranges
±0.8V and ±8V
Use probes to extend the range, eg 800V with 100x probe. The application automatically scales all values to compensate for probe attenuation.
Sample Rate
400 MSPS
All Analog and Digital channels simultaneously. 500 MSPS later.
Sample Memory
250 M Samples
For a single channel. For four channels = 62.5 Msamples (125 msecs at full rate). Currently max 10 MSamples.
CM leakage to other channels
<-125dBc
20 dBV signal to CM channel, measured on other channels whole bandwidth, ±0.8V range
Channel to Channel Skew
< ±144ps
Done using a 1 MHz coherent sine wave
Cross talk at 10.7 and 30 MHz
< -115 dBc
Using 1.6V p-p into the channel
RMS Channel Noise 1 M samples
< 210 uV rms, ±0.8V range
< 2.1mv rms, ±8V range
Inputs open
Pk-Pk Channel noise 1 M samples
1.8mVp-p for ±0.8V range
15mVp-p for ±8V range
Inputs open
Sample clock jitter
300 fs rms
Sample clock absolute Freq accuracy
±2 ppm
At 23 deg C
Sample clock temp stability
±0.5 ppm
Over -40 to +85 deg C
Enob (rms)
11.6 bits, or 1 part in 3,300
Inputs open
Noise free bits
10.3 bits, or 1 part in 1300
Inputs open
Spectral Noise floor,
no protrusions
-100 dBV
-115dBV
<2MHz, 200 MHz BW, 1kHz resolution
>2MHz, 200 MHz BW, 1kHz resolution
Sinad
> 64 dBc at 1 MHz
> 63 dBc at 10 MHz
> 55 dBc at 30 MHz
1 Vp-p into 50 ohms signal
HD2+3
< -80dB at 1MHz
< -76 dB at 10 MHz
< -71 dB at 30 MHz
1 Vp-p into 50 ohms signal
THD
< -76 dB at 1 MHz
< -74 dB at 10 MHz
< -67 dB at 30 MHz
1 Vp-p into 50 ohms signal
Pulse Flatness
< 700uV
< 2mV
< 1V
0.5V pulse, 500us duration, ±0.8V range
0.5V pulse, 500 us duration, ±8V range
500V pulse, 500us duration, 100x probe
Overload recovery
4ns
Recovery from 10x overload
Maximum Differential Input Voltage
±1 kV, derated above 1 MHz.
Derated at 20dB/decade
Maximum Common Mode Input Voltage
±1 kV, derated above 10 MHz.
Derated at 20dB/decade
Spectral Flatness
±0.2dB from 0 - 160 MHz
-2 dB at 200 MHz
Supports 200 MHz Bandwidth
Input Resistance
1 M Ohm
DC resistance
Input Capacitance
20 pF
Signal Input to Signal Common
Isolation Capacitance
< 14pf
Channel ground to chassis
Isolation Capacitance
< 6pf
Channel to channel
The Link Port is used for controllingCleverscope accessory devices such as the CS1070 1A 50 MHz power amplifier, andthe CS1110 VCE Sat Probe. It also includes RS232, SPI and I2Cports for controlling user equipment.
The Link In/Out Port is used daisy chaining2 or more CS448 Cleverscopes.
