High Voltage Optically Isolated Probe FF-1500

Optical isolation probe with wide bandwidth, high voltage, and high CMRR. Ideal for measuring the actual operating waveforms of switching devices in inverter.

FF-1500 is effective for measuring the actual operating signal of device ON/OFF switching in power conversion and power supply circuits, including inverters with GaN and SiC for high-speed operation. It is ideal for high-side gate signal measurements and current measurements from the voltage at both ends of a shunt resistor, where high-voltage common-mode noise can affect the measurement.

＞1.5GHz bandwidth
＞180dB CMRR
±60kV common mode voltage
Supports various differential input voltages by selecting probe tip cables
Universal BNC connection – use with any oscilloscope

FF-1500 probe head

Probe head and Interface box

FF-1500 consists of a probe head for measuring signals and a Interface box, with complete isolation between them achieved by a optic fiber cable. The probe head consists of a wideband input amplifier and an EO converter, which are powered by an 18650 battery (take-out rechargeable, sold separately). The Interface box on the signal output side has a BNC connector to accommodate any oscilloscope with a 50Ω input. A probe control unit (PS-02, etc.) is separately required to control the Interface box.

Probe Tip Cable

Probe tip cables with various attenuation ratios can be selected according to the differential voltage to be measured. These tip cables is connected to Probe head with SMA connecter. The tip of the probe tip cable is compatible with a low Ls,Cp MMCX connector (P) for high quality measurement in a wide bandwidth. Connectivity accessories are available as well as connections to MMCX(J)-compliant test points on the evaluation board.

Specifications

Electrical Specifications

		SMA Input	FF-MMCX-1V	FF-MMCX-10V	FF-MMCX-25V	FF-MMCX-50V
Bandwidth		＞1.5GHz		＞1.3GHz
Rise time		＜280ps
Input Attenuation		1×		10×	25×	50×
Input impedance		200kΩ // 5.1pF	50Ω	2MΩ // 3.4pF	4.9MΩ // 2.1pF	10MΩ // 2pF
Common Mode Voltage		± 60kV(DC+ACpeak)
Maximum Differential Input Voltage		±1V		±10V	±25V	±50V
Maximum non-destructive differential input voltage		5V		50V	100V
Degree of pollution		2
Common mode rejection ratio (CMRR)	DC	＞180dB
	1MHz	165dB	153dB	144dB	137dB	132dB
	100MHz	124dB	113dB	105dB	91dB	86dB
	200MHz	122dB	110dB	100dB	87dB	83dB
	500MHz	121dB	109dB	97dB	86dB	80dB
	1GHz	118dB	107dB	95dB	86dB	81dB
DC Accuracy		＜2% ±DC offset voltage
Noise		SMA input (1X)：＜2mVrms
DC offset voltage		SMA input (1X)：＜1.5mV (after auto-zero)
Propagation delay		2m fiber cable：15ns Probe specific value: printed on the label on the interface box and on the chip cable. Approx. 500 ps
Battery life		＞30h＠22℃ to 25℃, ＞20h＠0℃, ＞4h＠50℃, Depends on probe head operating temperature (continuous operation)
Output termination and coupling		DC50Ω
Battery type		18650 Li-ion with protection circuit, rechargeable, 3.7 V certified (sold separately)
Laser Certification		Laser Class 1 IEC/EN 60825-1:2014, US 21CFR Part 1010, US 21CFR Part 1040

Environmental Specifications

			Specifications
Temperature range	Operating	Probe head	0℃ to +50℃
		Interface box	0℃ to +40℃
		Tip Cables & Adapters	-40℃ to +85℃
	Non-operating	Probe head & Interface box	-20℃ to +71℃
	Non-operating	Tip Cables & Adapters	-40℃ to +85℃
Maximum relative humidity	Operating	Probe head	5% to 85%RH (relative humidity) at up to +40°C, 5% to 45%RH above +40°C up to +50°C, non-condensing
	Operating	Interface box	5% to 85% RH (relative humidity) at up to +40°C, non-condensing
	Non-operating	Probe head & Interface box	5% to 85%RH (relative humidity) at up to +40°C, 5% to 45%RH above +40°C up to +71°C, non-condensing
	Non-operating	Tip Cables & Adapters	5% to 85% RH (relative humidity) at up to +85°C, non-condensing
Maximum altitude	Operating		3,000m
Maximum altitude	Non-operating		15,000m

Order Information

Model	Specifications
FF-1500-INT	Optical isolated probe, 1.5GHz, ＞180dB, 2m fiber cable (2-footer, Probe control unit cable (0.5m) and color ring included.) An 18650 battery for Probe head is sold separately.

Model	Specifications
FF-MMCX-1V	Probe tip cable, MMCX, ±1V, ＞1.5GHz, 1x attenuation, 50 Ω terminated for shunt measurements
FF-MMCX-10V	Probe tip cable, MMCX, ±10V, ＞1.3GHz, 10x attenuation
FF-MMCX-25V	Probe tip cable, MMCX, ±25V, ＞1.3GHz, 25x attenuation
FF-MMCX-50V	Probe tip cable, MMCX, ±50V, ＞1.3GHz, 50x attenuation

Model	Specifications	Figure
FF-SQ-MMCX5	5x MMCX to 2x 0.025″ (0.635mm) socket, -40°C to +125°C
FF-HTSPAD-MMCX3	3x MMCX solder-in cable adapter HT, 50Ω RF micro coax to flex solder-in pad, -40°C to +155°C (green=0Ω, yellow=36Ω, red=75Ω)
FF-HTS-MMCX2	2x MMCX solder-in cable adapter HT, MMCX socket with 50Ω RF micro coax cable and open ends, -40°C to +155°C
FF-UFL-MMCX2	2x MMCX cable adapter, MMCX socket with 50Ω RF micro coax cable to UF. L plug, -40°C to +125°C
FF-2XR-MMCX	MMCX to 2x XR mini-hook
972416100	2-pole test clip SMD for use with FF-SQ-MMCX5
P25-2	Pico Hook^TM red use with FF-SQ-MMCX5
P25-0	Pico Hook^TM black use with FF-SQ-MMCX5
D010031	50Ω BNC feed-through for 1MΩ input oscilloscopes

Model	Specifications	Figure
FF-2FOOTERA	Probe positioner 2-Footer (Bipod), included in probe’s scope of delivery
FF-3DPOS200A	3D positioner with steel base, 200mm span width and FF-1500 probe holder, max 10kV
FF-HAL10kV-A3	FF-1500 Probe Holder, max 10kV, for use PMK’s 3D probe positioning system and SKID probes and PCB board holder systems, no stand-alone use

FF-1500 requires the PS-02, PS-03 or AP-01.

Model	Specifications
889-09V-PS2	PS-02 (2 channels, with USB interface for remote control)
889-09V-PS2-L	PS-02-L (2 channels, with LAN and USB interface for remote control)
889-09V-PS3	PS-03 (4 channels, with USB interface for remote control)
889-09V-PS3-L	PS-03-L (4 channels, with LAN and USB interface for remote control)
889-09V-AP01	AP-01 (battery pack, 1 channel, no remote control)
890-520-900	Probe control unit cable (0.5 m), included in probe’s scope of delivery
890-520-915	Probe control unit cable (1.5 m)