PM2534 Philips Multimeter

Additional Features:

• 3½ to 6½-digits
• 100 nV resolution
• 100 measurements/second
• GPIB/IEEE-488 interface standard, RS-232C optional Front or rear input
• Scanner extension

Technical Specifications

• Input Impedance: DC volts, 10 MΩ
• DC Volts: ± (0.002% reading + 0.0005% range)
• DC Amps: ± (0.005% reading + 0.001% range) Maximum  
• Input Voltage: 600V peak, 300V continuous
• Maximum NM Voltage: 140% of selected range
• Maximum CM Voltage: 350V peak, lo to guard; 350V peak, guard to ground
• Filters: User selectable digital
• Clip Indication: † is displayed when input circuitry clips during measuring cycle
• Null Range: ±100 µV
• Protection: 3.15A fuse
• Crest Factor: 3.3 at full scale, increasing down scale
• Crest factor overload indicated by 1 on display
• Temperature Coefficient: <0.03%/°C
• Maximum Volt-Hertz Product: 10⁷
• CMRR: With 1 k Ω unbalance and guard to "0": >120 dB for de signals; >80 dB for 50/60 Hz ac signals
• Maximum Input Voltage: 600V peak, 400V continuous
• Input Impedance: 300 mV & 3V: 1.2 MΩ/30 pF; 30V & 300V: 0.93 MΩ/30 pF
• Maximum Open Circuit Voltage: 10V 
• Maximum 4-Wire Lead Resistance: 100Ω
• Protection 2-Wire  
• Terminals: 250V ac or dc, 350V peak
• Protection 4-Wire Terminals: 30V ac or dc, 42V peak
• Maximum CM Voltage: 2-wire: 250V ac or dc, 350V peak between "0" and guard, or between guard and ground; 4-wire: 30V ac or dc, 42V peak between "0" and ground; guard must be connected to "0"
• Linearization: According to DIN 43760
• Max Voltage: Between "0" and guard 30V ac or dc, 42V peak

General Specifications

Power Requirements

• Power Supply: 115V or 230V (±10%) 
• Line Frequency: 50 Hz or 60 Hz (±1%) 
• Power Consumption: 20 VA
• Safety Class; IEC 348 Class I 
• MTBF: 32,000 hours 
• Calibration Interval: 1 year

Environmental Data

• Reference Temperature: 23°C ±1°C 
• Rated Range of Use: 0 to +50°C 
• Operating Range: 0 to +55°C
• Storage and Transport: -25°C to +70°C
• Limits of Humidity for Operation: 20 to 80% Max Dew Point: +25°C

The PM 2534 offers seven measurement functions, front or rear inputs, and 6½ digit guarded sensitive measurements or up to 3½ digit highspeed measurements. The units can operate in scan mode under external control via the standard GPIB/IEEE-488 interface.

Fast Measurement and Output

At a touch of the 'speed' button, the PM 2534 steps through 6½, 5½, 4½, and 3½ digit modes, enabling the optimum speed/resolution combination to be selected for every application. At a 3½ digit resolution the instrument makes 100 measurements per second and can transmit the measured values through its standard GPIB interface at the same rate.

Measurement Capabilities

The performance of this instrument covers more than dc voltages alone. In fact, seven measuring functions, including temperature are standard.

Operator and Application Friendly

Single button selection of function, range and trigger modes makes the PM 2534 very simple to use. Precise measurements are always made very quickly thanks to the 'NULL' key to compensate for small offsets and the "FILTER" key to eliminate small instabilities on dc signals. Access to the GPIB address and mode of operation is under the "CHECK" function but to prevent unauthorized use in systems application this can be 'locked-out' resulting in a 100% tamper free front panel.

And emphasizing the system-oriented design even further, the standard facility for full electronic calibration allows simple recalibration either via the GPIB bus, or manually, without the need to open the case.

Controlling System 21 Modules

With the PM2534, System21 can be added to any GPIB application to provide a modular and cost-effective solution to system switching. The PM 2534 has a System 21 master unit built-in, enabling it to control the PM 2120 universal switches or the PM 2121 low level switches.