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16
1.4.
ACCESSORY
INFORMATION
1.4.1.
10:1 Passive probe PM 8927
The PM 8927 is a probe with an attenuation factor of 10, designed for real-time oscilloscopes up to 75 MHz,
with BNC input jack and 14 ... 40 pF input capacitance in parallel with
1 MQ. The cable length of this probe
is 1,5 metres.
Characteristics
Electrical
Attenuation
10x + 2% (Oscilloscope input 1 MQ)
Input resistance
d.c.
10 MQ + 2 % (Oscilloscope input 1 M&2)
a.c.
See curve Fig. 4.
Input capacitance d.c. and |.f.
11 pF + 1 pF (Oscilloscope input 1 MQ + 5 % paralleled by 13 pF + 3 pF)
Input reactance h.f.
See curve Fig. 4.
Useful bandwidth
See curve Fig. 6.
Max. input voltage
500 V d.c. + a.c. peak, derating with frequency. See Fig. 5.
Oscilloscope input 1 MQ and voltage applied between probe tip and
earthed part of probe body. Test voltage 1500 Vg.c, during 1s. ata
temperature between 15 and 25 °C, a rel. hum. of 80 % at maximum
and at sea level.
Check-zero button probe shell
Same function as 0 position of input coupling switch on oscilloscope.
Compensation range
14 ...40 pF
Environmental
Probe operates within specifications over the following ranges:
Temperature
—25 °C to +70 °C
Altitude
Up to 5000 metres (15000 feet)
Other environmental data
Same as for any PHILIPS oscilloscope the probe is used with
Mechanical
Dimensions
Probe body 103 mm x 11 mm dia (max.)
Cable length 1500 mm (or 2500 mm PM 8927L)
Correction box 55 x 30 x 15 mm
incl. BNC
Mass
Incl. standard accessories 140 g.
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