PMTG 311A-RO High Impedance Passive Probe Features:  CeramCoreTM Hybrid Probe  Modular Construction  Coaxial Design  Interchangeable Spring Contact Tip  IC Contacting System 0.8 to 1.27 mm pitch  Double HF adjustment The PMTG 311A-RO is a 350 MHz, standard sized, 10:1 passive probe designed for instruments having 1 MΩ input resistance. This probe is recommended for general purpose probing applications and is adjustable for low and high frequencies. The probe is rated with 300 V CAT II maximum input voltage and complies to latest safety standards. Like every PMK passive probe the PMTG 311A-RO features CeramCoreTM technology. The probe's entire core is made of a high quality ceramic hybrid. Pure coaxial design and laser trimmed resistors ensure highest signal fidelity along the signal path offering high bandwidth and fast risetimes for accurate impulse measurements. All passive probes are equipped with PMKs signature spring loaded, needle sharp tips to support precise and safe measure-ments minimizing the risk of slipping off the board and produce a short circuit. Various types of tips are available. Besides the spring contact tips there is also a solid tip available at the users choice. Probe tips are interchangeable and can be replaced easily. Basic probe accessories and replacement tips are provided within the scope of delivery or can be purchased separately. The probes mechanical construction is modular and therefore spare probe leads are available. See this datasheet and corresponding documents for further details.

This datasheet supersedes all previously published material. Specifications that are not marked as guaranteed are published as general information to the user. The instrument should have warmed up for at least 20 minutes and the environmental conditions must not exceed the specified limits of the probe. Note that specifications are subject to change without notice. Electrical Specifications Attenuation Ratio (1) 10:1 Voltage Coefficient 0.00025 % / V System Bandwidth 350 MHz Probe Risetime 1 nsec Maximum Rated Input Voltage (2) Measurement Category I: 400 V rms 1250 V transient overvoltage Measurement...

Input Resistance (system) Input Capacitance (system) Compensation Range Input Coupling of the Measuring Instrument Input Impedance Typical Input Impedance PMTG 311A Typical input impedance PMTG311A Note that the input impedance of the probe decreases as the frequency of the applied signal increases. Mechanical Characteristics Weight (probe only) Cable Length Probe Tip Diameter

Environmental Specifications Altitude Temperature range Maximum relative humidity operating non-operating operating non-operating operating up to 2000 m up to 15000 m 0 °C to +50 °C -40 °C to +71 °C 80 % relative humidity for temperatures up to +31 °C, decreasing linearly to 40 % at +50 °C Declaration of Conformity The manufacturer declares the conformity of his products with the actual required safety standards in accordance with the Low Voltage Directive (LVD) 2006/95/EC: CEI/IEC 61010-031:2008 Safety requirements for electrical equipment for measurement, control and laboratory use. Part 031: Safety...

Scope of Delivery PMTG 311A-RO order No. 829-311-A01 ■ 2 Footer Positioner ■ Adjustment Tool T ■ BNC Adapter 5.0 ■ Ground Blade 5.0 ■ Ground Lead 22 cm ■ Ground Spring 5.0 ■ IC-Caps 0.8 to 1.27 mm pitch Safety Information To avoid personal injury and to prevent fire or damage to this product or products connected to it, review and comply with the safety informations stated in the manual before using this product. Be aware that if you use this probe assembly in a manner not specified the protection this product provides may be impaired. Only qualified personnel should use this probe assembly....