TECHNICAL DESCRIPTION AND OPERATING MANUAL ST131 <PIRANHA II> and ST131N
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1.3.3 UHF converter "ST131.UHF"
ST131.UHF is connected to the "I/O" socket of the main unit.
1 SMA socket.
2 Switch-on and low battery power indicator.
3 ON/OFF switch.
4 Main unit link quality indicator.
5 Screw-threaded hole ¼”.
6 Battery compartment cover.
At the end part of the UHF converter handle there is a socket for power supply.
1.3.4 Wire lines adapter «ST131.AWL»/ «ST131.AWLN»
ST131.AWL/ ST131.AWLN is a monoblock in which structurally united:
Step-down transformer voltage converter assigned to operate in the frequency range from 0.01
to 30 MHz;
•
Low frequency differential amplifier assigned for operation in the acoustic frequency range (0.3-
15 KHz).
Switching device controlled directly from the main unit and provides connection to the contact
pairs of the RJ-45. Connection can be to the most common combinations of pairs as well as
user-defined pair.
Amplifier for test signal generator (only for ST131N).
1 Sockets for probe connection.
2 "GROUND" contact.
3 RJ-45 sockets.
4 “LINE” voltage indicator.
5 “PWR/LINK” power and main unit data exchange
indicator.
6 "OVERLOAD" indicator of input signals.
At the bottom of the adapter there are elements of attachment to supporting device and a
shoulder holder to the main unit.
ST131.AWL connects to the main unit’s corresponding sockets.
Figure 4
Figure 5
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4
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