Operation
R&S
®
HL300
15
Manual 4097.3328.02 ─ 01
Minimum bending radius
The minimum bending radius must be at least 50
mm.
Fig. 3-3: Excessive bending of the RF and control cable will cause permanent damage to the R&S
HL300 .
3.3 Activating or Deactivating the LNA in the R&S
FSH4/8
"Passive" mode (bypassing the LNA):
●
Move the toggle switch on the handle of the supply and display unit into position "OFF"
(downwards on the handle, see
"Active" mode:
●
Move the toggle switch on the handle of the supply and display unit into position "ON"
(upper position, see
). This is indicated by the green LED.
Fig. 3-4: Power label for LNA.
The R&S
HL300 should only be switched to "Active" mode if there are no strong trans-
mitters in close vicinity and the sensitivity of the receiving system (antenna with spectrum
analyzer) in "Passive" mode is not sufficient to detect the signal.
Activating or Deactivating the LNA in the R&S
FSH4/8