Capacitive Voltage Probe

CVP-SERIES has Brought in the Market at the Earliest Stage by NTT-AT, which is Applicable for the Measurement Specified in CISPR Pub.22 Ed.6.0 Annex C (2008)

1. Based on CISPR Pub.22 Ed.6.0b Annex C (2008)
2. Applied for RS-232C, USB, IEEE1394, STP Cables with 2, 4, 8 wires, multi-conductor unscreened cables
3. More than 200 types of cables
4. Wide frequency range (10kHz to 100MHz)

Voltage Probe Applicable to All Types of Cables

The CVP is the first alterative for ISN in CISPR pub.16-1-2. It has achieved innovative applicability to all types of cables compared to the conventional ISNs.
The common-mode voltage on the multi-pair cable can be easily detected by capacitance coupling between the cable conductors and electrode of the clamped probe.
Also, it is not necessary to cut, bear or touch the cable conductor and the measurement by using CVP never causes transmission signal degradation.

Constant Sensitivity in Wide Frequency Range

The CVP has constant sensitivity in wide frequency range from 10 kHz to 30 MHz. (The CISPR16-1-2 specifies flatness in frequency range from 150 kHz to 30 MHz)
This can be applied not only spectrum measurement but also wave form measurement.
The sensitivity can be switched to 1/10 and 1/100 for lower and higher level measurements.

Two Types for Large and Small Cable Diameter

The sensitivity of the CVP depends on the diameter of cable and inner electrode of the CVP.
Suitable one can be selected from two types of CVPs .

CVP-20L: for cable diameter smaller than 10 mm
CVP-20S:for cable diameter larger than 10 mm

Model	CVP-20L	CVP-20S
Measurement place	Indoor site
Mesurable cable	Smaller than 30mmΦ	Smaller than 10mmΦ
Frequency range	10kHz to 100MHz (±3 dB)
Minimum level	Less than 44dBμV
Capacitance	Less than 8pF (between cable and ground)
Influence from outside	Suppression: more than 20dB
Sensitivity	1/10 or 1/100 (can be switched)
Maximum output	±1V
Input impedance	1MΩ ±5%(at low frequency)
Output resistance	42Ω ±20%
Circuit noise	Less than 80dBm
Supply voltage	DC 12V ±10%
Supply current	Less than 50mA
Output terminal	BNC (50Ω)
Supply terminal	Specific: multi-conductor type
Size (mm)	W: 120, L: 100, H: 143	W: 60, L: 100, H: 75
Weight	About 1.5kg	About 500g
Surface finish	Anodized aluminum

	DC Power Supply
Model	PS-26
Output voltage	+12V ±5%
	-12V ±5%
Output terminal	Specific: multi-conductor type
Mains voltage	AC 100V / 120V / 220V / 240V
Power consumption	12W
Size (nm)	W:73, L: 186, H:110
Weight	1.1kg

* Specifications may be changed without prior notice.