User’s Manual for
MRx18 Rel. 2 Single-Band
Page 28 M0139ADD.doc
Radio Frequency
Parameter Description of General
Band
For the single band repeater MRx18 only one band is displayed.
Passband (MHz)
*
DL / UL
Enter the frequency range (start and stop frequency) for both DL and
UL to be amplified. User band is set for DL. Enter the frequency values
within the duplexer range DL that is indicated above the field. Step size
is 10 kHz. Recommended bandwidth for UMTS networks:
1 UMTS carrier: 4.6 MHz
2 UMTS carriers: 9.6 MHz
3 UMTS carriers: 14.6 MHz
Depending on the Passband DL, the Passband UL is set accordingly.
Gain Setting (dB)
DL / UL
Select the gain for UL and DL in the range from 40 dB to 70 dB.
When Auto Gain is enabled the entries will not be applied.
Auto Gain
With Auto Gain activated, the repeater will automatically set its gain to
the maximum value. Depending on the DL input level, gain is
decreased to optimize the output power to the value adjusted at the
Max. Output Power (dBm) DL without reaching the ALC level. Gain is
increased after expiring the time selected at Auto Gain Time Interval, if
DL input level decreases. UL gain is set accordingly with respect to
Auto Gain imbalance setting.
Maximum Output
Power (dBm) DL /
UL
The ALC limit level or maximum output power can be selected for DL
and UL independently by shifting the slider to left or right. Depending on
application / network, the output-power value specified in chapter 8.1
Electrical Specifications MRx18 must be entered in order to meet the
respective standards. ETSI refers to the standards meeting <-36 dBm
or <-30 dBm intermodulation products. For output power values that do
not refer to ETSI, the intermodulation products are <-13 dBm.
*
Passband corresponds to 3 dB-bandwidth
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