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INSTRUCTION MANUAL
SGTEL-168
TELECOM LINE SURGE GENERATOR
1912 1 E l T o ro R d
●
Si l vera do, Ca lifo rni a 9 26 76
●
(9 49) 459 -96 00
●
co m-p o wer. com
REV070516
5.0 Calibration of Surge Output Waveforms
This section provides guidance on the measurement (and associated calculations) of the
SGTEL-168 Surge Generator output waveforms at the (A/B/G) output terminals and at the
EUT power output port terminals.
5.1 Recommended Test Equipment
Listed below are the three key components recommended for surge waveform
measurements.
1)
Digital Storage Oscilloscope (BW
≥
100 MHz)
2)
High Voltage (1000x1) Differential Oscilloscope Probes (BW
≥
10 MHz)
3)
Current Probe (BW
≥
10 MHz, LF cutoff
≤
0.5 Hz) and coaxial cable for
connection to oscilloscope input.
4)
Coaxial cables, adapters and/or fixtures as necessary so that all required
connections are made properly.
5.2
Surge Waveform Measurements
As discussed in the following sections, open circuit voltage measurements are to
be made using high-voltage differential oscilloscope probes, while the short
circuit current measurements are made using an appropriate current probe.
5.2.1
Open Circuit Voltage Measurements
Open circuit voltage waveform measurements are made using high-
voltage, differential–type oscilloscope probes connected directly to the
appropriate SGTEL-168 output terminals. The required waveform
parameters are defined in section 6.3.
5.2.2
Short Circuit Current Measurements
Short circuit current waveform measurements are made by shorting the
appropriate output terminals using a short length of wire, routed through
an appropriate current probe, which is connected to the input of the
oscilloscope.
