Svantek SV 971A, User Manual

Page: 256 / 305

SV 971A User Manual
– Appendixes
256
Input (Preamplifier) Connector
The input of the measured signal is taken form the microphone preamplifier:
Connector view (external), contact assignment
Table C.4.2. Pin out of the TNC connector
Contact number Signal name
1
+4V /+10 V power supply
2
-2.1V /-7.3 V power supply
3
GND
4
Pramp DC bias
5
Signal
6
Temperature sensor / TEDS
Preamplifier body
Shield / Cable Screen
Power Supply
Instrument is dedicated for the operation from the internal replaceable AAA batteries. Power consumption from
the 6V source is approx. 60 mA (at + 20

C). So, typical operating time from 4 x AAA alkaline batteries will be
about 16 hours .
SV 971A can be also powered from the AAA Class rechargeable batteries.
Note: For the temperatures below 0

C operating time can decrees (depending on the
batteries)!
Interface USB Type C
The SV 971A USB-C 2.0 interface enables remote control of the instrument and data transfer with the speed
up to that attainable with 480 MHz clock.
Note: For effective operation with the USB, the High 480Mbps speed mode should be used,
however when the interference RF field strength may exceed the value of 3V/m, then it is
recommended to switch to the Full 12Mbps
speed mode.