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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
4.2
Monitor Ports
The monitor ports provide a convenient method for
verification various surge waveform parameters, and
triggering of oscilloscope measurements.
4.3.1
Sync Output Port (Sync. O/P)
The SYNC OUTPUT port is provided as an alternative method of
triggering the oscilloscope measurement. The SYNC OUTPUT port
connects directly to the external trigger input of any
oscilloscope. The output is 5 VDC steady state, and drops to
zero volts for a period of 20 ms when the surge generator output is
discharged.
4.3.2
Voltage Monitor Port (V
mon
)
The Voltage Monitor Port (Vmon) is intended to be connected to
a high impedance (>10k
Ω
) input of an oscilloscope for
verification of peak surge voltage for all waveforms. The output
scaling is 1V / 1000V (1000:1 ratio).
This port provides a convenient method by which the
open circuit
* surge
output voltage can be verified. The peak output voltage measured at
this port is representative of the voltage at the surge output terminals with
a typical accuracy within
±
10%.
However, the actual wave shape of the surge waveform may become
distorted; and therefore this port should not be used for measurement of
other parameters, such as rise time or decay time. These parameters must
be measured at the surge output terminals.
4.3.3
Current Monitor Port (I
mon
)
The Current Monitor Port (Imon) is intended to be
connected to a high impedance (>10k
Ω
) input of an
oscilloscope for verification of peak surge current for all
waveforms. The output scaling is 1V / 100V (100:1 ratio).
This port provides a convenient method by which the
short circuit
* surge
output current, rise and decay time can be verified. The waveform
parameters measured at this port are representative of those at the surge
output terminals, with a typical accuracy within
±
10%.
*
Measurements at these ports are within the stated accuracy for open circuit voltage
measurements and short circuit current measurements. Open circuit measurements are
performed with no external connections to the surge output terminals; while short circuit
current measurements are performed with the surge output terminals short circuited.
Measured values will vary with alternate terminations (with the EUT connected, for instance).
