PBN

DIMA 1.2GHz

High Density RF Splitter/Combiner

DIMA 1.2GHz

About the Product

The Dense Intelligent Multi-Access (DIMA) is a headend splitter/combiner assembly in a 1RU or 5RU 19 inch chassis. Each module can integrate 3× double splitters, 2× four splittersor 1× eight splitters.

The DIMA platform is designed to operate as an RF splitter or combiner in both forward and return path configurations. It can be deployed in virtually any HFC environment and each port’s link attenuation can be independently adjusted to balance RF levels.

A single DIMA platform can be fitted with up to 160 input / output ports with every RF port having 1000 Vdc of voltage blocking. It also features excellent RF characteristics spanning 5 ~ 1218 MHz with each port having 30 dB of isolation.

  • Excellent RF characteristics spanning the entire 5 ~ 1218 MHz
    range 
  • High density RF combiner or splitter with up to 160 input/output ports 
  • Test point (-20 dB)  
  
  • Plug-in attenuation pad on every port to balance RF port levels 
  • Isolation more than 30 dB per port
  • Each RF port includes 1000 Vdc of voltage blocking 
  • Available module configurations:
    3 x 2, 2 x 4, 1 x 8
Performance(1)
Module Frequency DIMA-5A32 DIMA-5A24 DIMA-5A18
Bandwidth   5 ~ 1218 MHz 5 ~ 1218 MHz 5 ~ 1218 MHz
Flatness   ± 0.5 dB ± 0.5 dB ± 0.5 dB
Splitter insertion loss 5 ~ 1000 MHz 4.5 dB 8.5 dB 12.2 dB
1000 ~ 1218 MHz 5.0 dB 9.0 dB 13.0 dB
Test point(2)   -20 ± 1dB -20 ± 1dB -20 ± 1dB

RF return loss(3)

 5 ~ 10 MHz ≥ 20 dB > 18 dB > 15 dB
10 ~ 15 MHz ≥ 20 dB ≥ 20 dB ≥ 18 dB
15 ~ 1218 MHz ≥ 20 dB ≥ 20 dB ≥ 20 dB

Isolation

 5 ~ 10 MHz ≥ 21 dB ≥ 27 dB ≥ 28 dB
10 ~ 15 MHz ≥ 25 dB ≥ 30 dB ≥ 30 dB
15 ~ 1218 MHz ≥ 28 dB ≥ 30 dB ≥ 30 dB
DC block   > 1000 Vdc > 1000 Vdc > 1000 Vdc
General
Temperature and humidity Working temperature -5 ~ 55 °C
Storage temperature -30 ~ 80 °C
Operating Humidity 90 % (non-condensing)
Storage Humidity 90 % (non-condensing)

Chassis Dimensions
(W x D x H)

5RU: 223 x 484 x 386 mm

1RU: 266 x 443 x 45.5 mm

Module Dimensions
(W x D x H) 

22 x 130 x 220 mm

Chassis Weight 

5RU: 3.0 kg

1RU: 1.75 kg 
Module Weight 0.5 kg
Module connector F-Type Connector

Note:
(1) The not used ports are terminated by 75 ohm load.
(2) The test point is a unidirectional coupler used for monitoring the input of a splitter (5Axx); for 5Cxx, the test point’s deviation may vary due to differences in insertion loss with different modules. Example: 5Axx: -20 ± 1 dB; 5Cxx: -(20 + module insertion loss) ± 1 dB.
(3) Minimum between all the ports.

Chassis
D-DCHA-[Z]

DIMA Chassis

Options:
Z

Height
5U
1U		 5RU height chassis holding up to 20 DIMA modules
1RU height chassis holding up to 4 DIMA modules

Splitters and Combiners:
D-DMOD-5[X][Y]-[Z]

DIMA Modules
Options

X

Function

A
C

Splitter
Combiner
Y

Configurations
24
32
18		 2 x 4-way
3 x 2-way
1 x 8-way
Z

Bandwidth
12 5 ~ 1218 MHz

 

Plug-in Attenuation Pad:

D-DMOD-ATT1-xx 

xx = 0 dB to 30 dB in 1 dB increments 

Examples

D-DCHA-5U 

DIMA Chassis 20-slots, 5RU height
D-DCHA-1U DIMA Chassis 4-slots, 1RU height
D-DMOD-5A18-12 DIMA Splitter module, 1 x 8-way, 13 dB attenuation, 5 ~ 1218 MHz
D-DMOD-5A24-12 DIMA Splitter module, 2 x 4-way, 9 dB attenuation, 5 ~ 1218 MHz
D-DMOD-5A32-12 DIMA Splitter module, 3 x 2-way, 4.5 dB attenuation, 5 ~ 1218 MHz
D-DMOD-5C18-12 DIMA Combiner module, 1 x 8-way, 13 dB attenuation, 5 ~ 1218 MHz
D-DMOD-5C24-12 DIMA Combiner module, 2 x 4-way, 9 dB attenuation, 5 ~ 1218 MHz
D-DMOD-5C32-12 DIMA Combiner module, 3 x 2-way, 4.5 dB attenuation, 5 ~ 1218 MHz