_____________________________________________________ 1 PolaRx4_PRO and PolaRx4TR_PRO
PolaRx4 Product Family Hardware Manual v2.0.0
10
When the PPS OUT signal is configured, the PPS-IN-to-measurement-latching delay is the delay
between the leading edges of the pulses on the input 1 and input 2 ports of the oscilloscope. The
oscilloscope trigger level should be set to 1V.
To avoid possible 20-ns jumps when power-cycling the receiver, the transition zones (gray bars in the
figure on the previous page) should be avoided. So, if the measured PPS-IN-to-measurement-latching
delay is within 2ns of the upper (150.3ns) or lower (130.3ns) limits, it is recommended to replace either
the C3 or the C4 cable by a cable of another length. A change of 1 meter in the length of the C3 or C4
cable changes the PPS-IN-to-measurement-latching delay by about 5 ns.
