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Microlease Calibration and Repair
Europe’s Leading Specialist
As Europe’s leading specialist in test and measurement equipment rental for over 30 years, Microlease has developed an experienced division delivering high quality calibration and repair services, dedicated to keeping customers’ test equipment in peak condition.
The department is certified to BS EN ISO 9001:2008 certification number FS 00857 and our calibration process follows BS EN ISO 10012:2003
Equipment requiring confirmation in a tightly controlled environment is carried out in the standards room maintained at 23 °C ± 2 °C, relative humidity 50% ±10% RH, and for a less critical environment at 23 °C ± 4 °C, relative humidity < 65% RH.
The range of measurements stated below relate to the use of readily available items of dedicated laboratory equipment. Many measurement ranges may be extended using specially characterised measurement set-ups or “special to type” test fixtures as needs arise.
Product Ranges
For the purposes of this document “RF” includes microwave frequencies.
Amplifiers DC/LF/RF (including LF transconductance amplifiers)
Analysers Distortion (audio)
Modulation
Network (LF/RF)
Spectrum (LF/RF)
Datacomms (LAN/WAN)
Bridges L.C.R
Calibrators AC/DC Voltage
AC/DC Current
Resistance
Oscilloscope
Components Resistors/Capacitors (DC/LF)
Terminations (DC/LF/RF)
Attenuators (DC/LF/RF)
Directional Couplers/Bridges (LF/RF)
Power splitters/dividers (DC/LF/RF)
7/16 Open/Short/Loads DC to 7.5GHz
Environmental Electrical Installation Testers
Electrical Safety Testers
Anti-static Measurement/Control Devices
Line Impedance Stabilisation Networks
Generators Function
Pulse
Arbitrary Waveform
CW/Sweep/Synthesised (LF/RF)
Meters AC/DC Voltage
AC/DC Current
Phase
Power (LF/RF) - including 1 mW 50 MHz REF O/Ps
Resistance (including insulation)
Temperature (meters only - not sensors)
Miscellaneous Chart Recorders, Plotters, Data Recorders
Oscilloscopes Analogue
Digital
Sampling
Power Supplies AC/DC
Power Sensors RF (50 Ohm)
Telecomms Mobile Radio Test Sets
Standard Protocol Analysers
PDH Test Sets
SDH/SONET Test Sets (restricted capability)
Timer/Counters LF/RF
Fundamental DC / LF / Frequency Parameters
D.C. Voltage 0 to 40 kV  
D.C. Current 0 to 200 A (using shunts)
0 to 1000 A (using current clamp)
 
A.C. Voltage 0 to 1100 V

0.1 to 10 V
1 to 20 kV
0.1 Hz to 50 kHz
0.1 Hz to 100 kHz (Source)
to 1 MHz
50 Hz
A.C. Current 0 to 22 A 0.1 Hz to 5 kHz
Frequency 0 to 50 GHz (Generation & Measurement)  
Time Interval 1 nS to 100 S  
Period 10 nS to 107 S  
Fundamental Higher Frequency Parameters
50 Ohm system assumed unless otherwise stated
Power (using power sensors) -70 dBm to -20 dBm
-30 dBm to +20 dBm
-30 dBm to +20 dBm (75 Ohm)
10 MHz to 18 GHz
100 kHz to 50 GH
100 kHz to 2 GHz
0 dBm (using D.C. substitution) 50 MHz For power meter reference outputs
Power (Using tuned receivers etc.) 127 dBm to +30 dBm
-100 dBm to +30 dBm
-95 dBm to +30 dBm
-130 dBm to +32 dBm (75 Ohm)
-120 dBm to +22 dBm (124/150 Ohm)
-130 dBm to +22 dBm (150/600 Ohm)
2.5 to 1300 MHz
to 18 GHz
to 26.5 GHz
200 Hz to 25 MHz
10 kHz to 14 MHz
200 Hz to 620 kHz
Measurement of power at most impedance’s down to DC also possible (minimum power dependant on frequency)
Voltage 100 mV to 3.16 V 100 kHz to 2 GHz
Attenuation (Using step and fixed attenuators) 0 to 110 dB
0 to 110 dB
0 to 120 dB (75 Ohm)
0 to 120 dB (150 Ohm)
0 to 125 dB (150/600 Ohm)
0 to 1300 MHz
to 50 GHz
200 Hz to 25 MHz
10 kHz to 14 MHz
200 Hz to 620 kHz
Ranges stated are “typical”: actual maximum attenuation values depend on input level that can be applied
Measurement of attenuation at most impedance’s down to DC also possible (maximum attenuation value also dependant on frequency)
V.S.W.R 1.00 to 1.01
1.00 to 1.01 (75 Ohm)
30 kHz to 26.5 GHz
50 kHz to 190 MHz
Amplitude Modulation Modulation 20 Hz to 100kHz For the calibration of signal sources and modulation meters between 10% and 90% modulation depth.
Frequency Modulation Modulation 20 Hz to 100kHz For the calibration of signal sources and modulation meters at frequency deviations between 1kHz and 300 kHz
RF Power 1mW @ 50MHz  
Other Parameters   The laboratory holds equipment allowing the measurement of phase, distortion, waveform shapes (risetime, ringing, amplitude etc), modulation (PCM etc), telecoms PDH/SDH formats and certain environmental and optical parameters.
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