User Manual

MDR2400/5800-SR, Orion2410/5810-SRi and Orion 5825-SR
862-01881 Issue 12c Page 13
2.2.1 Frequency plans
The MDR5800, Orion5810i and the Orion 5850 RF Units operate in the 5.725 GHz to
5.850 GHz ISM frequency band with predefined frequency channel plans (termed A, B,
C and D). Channel plan D is user selectable / adjustable.
The MDR2400 and Orion2410i RF Units operate in the 2.400 GHz to 2.4835 GHz ISM
frequency band with predefined frequency channel plans (termed A, B and D).
Channel plan D is user selectable / adjustable.
2.2.1.1 MDR5800 and Orion5810i Frequency Channel Plan A, B and C
The channel spacing is based on the bandwidth occupied by the spread spectrum
signal (approximately 17 MHz) and is used to optimise link performance. In the case
of plan A, plan B and C, note that both RF Units of a link must be set up to the same
frequency channel plan (i.e. A, B or C).
C
H
B
H
Frequency (MHz)
LOW BAND TRANSMIT HIGH BAND TRANSMIT
A
H
A
L
B
L
C
L
5735 5753 5771 5804 5822 5840
Figure 1. MDR5800 and Orion5810i Frequency channel plans A, B and C
2.2.1.2 MDR2400 and Orion2410i Frequency Channel Plan A, B (non-FCC)
The channel spacing is based on the bandwidth occupied by the spread spectrum
signal (approximately 17 MHz) and is used to optimise link performance. In the case
of plan A and B, note that both RF Units of a link must be set up to the same frequency
channel plan (i.e. A or B).
A
H
B
H
Frequency (MHz)
LOW BAND
TRANSMIT
HIGH BAND
TRANSMIT
A
L
B
L
2410 2426
2458 2474
Figure 2. MDR2400 and Orion2410i Frequency channel plans A and B