Operating instructions

OPERATING MANUAL 2945A
46882-311D B-9
Using the Light-weight Directional Power Head accessory
General
The Light-weight Directional Power Head can only be used with the Communications Service
Monitor 2945A if the adaptor 46884/789 is used. This is either supplied with the Light-weight
Directional Power Head as an accessory kit or can be obtained as a separate item. See the
performance data section of this appendix.
Power supply
No additional power supply is required. 12 V DC is supplied from the accessory socket to the
adaptor, which in turn provides the supply for the power head.
Procedure
Connections
WARNING
RF HAZARD. No attempt should be made to connect the Light-weight Directional Power Head to
an RF line until the "Precautions, RF Hazard" have been noted.
Connect the multicore cable from the power head to the adaptor 46884/789, and connect the DIN
plug from the adaptor to the ACCESSORY socket of the service monitor. See Fig. B-1.
!
!
ADAPTER
C2557
Transmitter
70MHz-1000MHz
max. 50W
RF - HEAD
Short
Circuit
50 Ω
Antenna
Fig. B-1 Connecting the Light-weight Directional Power Head
Select either the Tx or Dx operating mode by pressing the appropriate mode key.
Press the [Tx Power] key, which will display the screen shown in fold out diagram (2.1) or (4.8).
Press the [Dir Power] key. The screen shown in Fig. B-2.