User Manual

Fibre Optic Master and Remote Site
User Handbook
Document Number: 60-212701HBK - Issue No. 1 Page 11 of 50
3.4. 60-212701 Major Sub Components
3.4.1. UHF 3dB Splitter/Combiner (05-002603)
The 3dB Splitter/Combiner (05-002603) is a device for accurately matching two RF signals to a single
port or splitting an RF signal to two ports whilst maintaining an accurate 50 load to all inputs/outputs
and ensuring that the VSWR and insertion losses are kept to a minimum.
05-002603 Specification
PARAMETER SPECIFICATION
Frequency range 380 - 520 MHz
Bandwidth 140 MHz
As Combiner 2 inputs 1 output
Ports
As Splitter 1 input 2 outputs
Insertion loss 3.5 dB (typical)
Isolation >18 dB
Return Loss (VSWR) – Input Better than 1.3:1
Return Loss (VSWR) – Output Better than 1.3:1
Impedance
50 9
Power Rating – Combiner 0.5 Watt
Power Rating – Splitter 20 Watts
Connectors SMA female
Size 54 x 44 x 21 mm
Weight 200 gm (approximately)
3.4.2. Switched Attenuator 0-30dB 0.25W (10-000701)
10-000701 provides attenuation from 0 - 30dB in 2 dB steps, the attenuation is simply set using the
four miniature toggle switches on the top of each unit. Each switch is clearly marked with the
attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are
designed to maintain an accurate 50 impedance over their operating frequency at both input and
output.
10-000701 Specification
PARAMETER SPECIFICATION
Attenuation Values 0-30dB
Attenuation Steps 2, 4, 8 and 16dB
Power Handling 0.25 Watt
Attenuation Accuracy ± 1.0 dB
Frequency Rang DC to 1GHz
Impedance 50ȍ
Connectors SMA
VSWR 1.3:1
Weigh 0.2kg
operation -20°C to +60°C Temperature
range
storage -40°C to +70°C