PMS221A
5Pages

PMS 221A 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  Unbreakable Reed Switch The PMS 221A is a 150 MHz, standard sized, 1:1 and 10:1 switchable passive probe designed for instruments having 1 MΩ input resistance. This type of probe is recommended for general purpose probing applications and is adjustable for low frequencies. The probe is rated with 300 V CAT II maximum input voltage and complies with latest safety standards. Like every PMK passive probe the PMS 221A 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 switchable probes offer unbreakable coaxial reed switches for changing between attenuation modes. Our passive probes are equipped with PMKs signature spring loaded, needle sharp tips to support precise and safe measurements 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 (switchable) (1) 1:1 10:1 Voltage Coefficient – 0.00025 % / V Probe Bandwidth 20 MHz(2) 150 MHz Probe Risetime 18 ns 2.4 ns Maximum Rated Input Voltage (3) Measurement Category I: –...

Electrical Characteristics Input Resistance (system) Input Capacitance (system) Compensation Range Input Coupling of the Measuring Instrument Input Impedance Typical input impedance PMS221A Typical Input Impedance PMS 221A (switched to 10:1) (switched to 10:1) 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...

Scope of Delivery PMS 221A order No. 820-221-A00 ■ Probe ■ Ground Blade 5.0 ■ Ground Lead 22 cm ■ IC-Caps 0.8 to 1.27 mm pitch ■ Instruction Manual ■ Insulating Cap 5.0 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. Manufacturer PMK Mess- und...