User's Guide MR2003B/D
Andrew Wireless Systems * Industriering 10 * 86675 Buchdorf * Germany *
Phone: +49 9099 69-0 * Fax: +49 9099 69-930 *
email: [email protected] * http://www.andrew.com
Page 4
10.2. Center
Frequency
The position of the CF rotary switch and the type of SAW filter used (5 MHz, 10 MHz or 15 MHz) decide which
channel(s) of the UMTS band will be amplified.
1 2 3 4 5 6 7 8 9 10
11
12
UMTS-Channel
0 1 2 3 4 5 6 7 8 9 10
11
CF-Setting
1920 1930 1940 1950 1960 1970 1980
MHz (UL)
2110 2120 2130 2140 2150 2160 2170
MHz (DL)
UMTS frequency band
In case of 10 MHz or 15 MHz filters, more than one channel will be amplified by one setting. Thus, the A and/or B
positions must not be used. The center frequency set is always that of the lowest channel.
SAW Filter
5 MHz
Rotary
switch
position 0 1 2 3 4 5 6 7 8 9 A B
Amplified
channel(s) 0 1 2 3 4 5 6 7 8 9 10 11
SAW Filter
10 MHz
Rotary
switch
position 0 1 2 3 4 5 6 7 8 9 A B
Amplified
channel(s) 0,1 1,2 2,3 3,4 4,5 5,6 6,7 7,8 8,9 9,
10 10,11 ---
SAW Filter
15 MHz
Rotary
switch
position 0 1 2 3 4 5 6 7 8 9 A B
Amplified
channel(s)
0-2 1-3 2-4 3-5 4-6 5-7 6-8 7-9 8-10 9-11 ---
---
CF setting
10.3.
Center Frequency Offset
A center frequency offset from 0 to 700 kHz (+ or -) may be set in steps of 100 kHz. Each rotary switch position
equals one step, no CFO is set at positions 0 and 8. Positions 1-7 set a CFO of +100 kHz per step, positions F-9
set a CFO of -100 kHz per step.
Rotary
switch pos.
0 1 2 3 4 5 6 7 8 F E D C B A 9
CFO in 100
kHz
0 +1 +2 +3 +4 +5 +6 +7 0 -1 -2 -3 -4 -5 -6 -7
CFO setting
