CS548 Isolated Oscilloscope
The CS548 is a 2kV DC isolated channel oscilloscope designed to be useful anywhere isolation and high CMRR are needed - in particular power electronics. Using the CS1200 Digitizer you'll get >30kV isolation. The CS548 supports - via the CS302 64bit 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.
CS548 Front panel
CS548 Rear Panel
CS548 with CS1200 IsoPod
The CS548 isolated channel oscilloscope is made for measurements in power electronics systems, including on the high side.
It can be used to make measurements of all high side nodes, do EMC measurements, check out start up behaviour, calculate power loss and switching energy, and examine message contents.
We can also supply it with three, two, one or no internal channels, useful if you only require fewer channels or want to use mainly remote channels (CS1200). Please contact us if you would like one of these options.
It is part of a tool set that will do all the things needed to verify your power electronics design, and then test it - as a prototype or in production.
The CS548 includes the accessories you need to get measuring:
- For each channel: A 1x/10x probe, and a 100x probe, which can be optionally swapped for a 200x probe. A clamp on common mode choke to improve CMRR in high slew rate applications.
- CS1051 19V 65W grounded power supply.
- An IEC power cable suited to your country.
- A shielded 2m USB3 cable.
- 2 x CS1301 digital input pods and clips.
- A CS1042 SFP Ethernet adaptor (copper) or CS1043 fiber. Please specify at purchase.
- An SMA to BNC adaptor for the signal generator SMA output.
- Software application and Rom Loader installer on a USB stick.
It includes these capabilities:
- A software application, and DLL driver to control between 1 and 4 oscilloscopes as a single 4-16 channel oscilloscope, capable of streaming to hard disk, doing Time and Spectrum, Symbolic Maths, Matlab integration, FRA, Protocol Decoding and Signal Statistics.
- Four internal isolated input channels for measurement of signals with a common mode voltage change of 100V/ns at up to 2kV common mode.
- Four remote channel sockets for use with the CS1200 remote Digitizer. The CS1200 is linked by active optical fibre at up to 30m distance for use in high voltage enclosures (up to 30kV common mode).
- Really good resolution (14 bit) with noise free measurement of 1 part in 1300.
- An isolated signal generator, 0-65MHz, (also 100V/ns common mode) to do Frequency Response Analysis (FRA). Use it for stability analysis and gain/phase on working power electronics modules, Impedance measurement of power planes, inputs and outputs, and measurement of inductors and capacitors over frequency.
- Two pod high speed interfaces for I/O expansion.
- Two CS1301 Isolated digital input pods for measuring logic signals with high common mode voltages (1130V DC) - 4 digital inputs each for a total of 8 digital inputs.
- The CS1302 Isolated digital I/O pods is an optional separate purchase for generating up to 4 outputs for double pulse, half or full bridge PWM control or arbitrary pulse sequences. It includes one input pod, and can be used to make an isolated SPI or UART pod. Support for the CS1302 is in the Pulse Builder part of the application.
- Other Pods that are in development and will be available with a free firmware upgrade when completed:
CS1303 Measurement Hub
This pod allows connection and identification of up to four CS1304-CS1306 measurement pods to a single CS548 Pod connector.CS1304 Isolated Current Measurement
This pod uses a TI AMC3306M05 with ±50mV input range, to provide an isolated channel for current sense such as 50mV Murata 3020 DMS or Riedon RSA shunts.CS1305 Isolated Voltage Measurement
This pod uses a TI AMC3336 with ±1V input range to provide an individually isolated channel, for voltage sense. The CS1305 comes in 5 variants, with input ranges of ± 1, 10, 100, 1000 and 2000V.CS1306 Isolated Temperature Measurement
This pod uses an AD8495 K type thermocouple amplifier driving a TI AMC3336 with ±1V input range to provide an individually isolated channel to measure up to 400 ºC.CS1307 CAN controller
The CAN controller will use an SPI CAN controller (such as Microchip MCP2515 or TI TCAN4550) to monitor or stimulate CAN messages in an automotive CAN network. - These support products are useful for saturated transistor voltage measurement and higher power FRA:
- CS1133 Vsat probe pod for measuring mV saturation levels while switching up to 3kV for power loss measurement. It is isolated for high or low side measurements.
- CS1070 50 MHz power amplifier with 36Vpp 1A output for wide bandwidth higher power FRA.
- Download the specs from here.

