Nortel Networks Confidential
Transmit Receive Unit (TRU)
1-33
Wireless Solutions
DualMode 800 Enclosure Maintenance Manual
MTX08
Table 1-3
TRU Fullscreen commands (continued)
Use the three TRU Power commands according to the following relationship
when adjusting the TRU output power:
TRU Output Power = MAXTXPOW - (TXPOWIDX x TXPOWSTEP)
Example:
If you require an output power of 15.75 dBm at the TRU output, you can use
either one of the following TRU power settings to obtain that output power.
Transmit functions (available to both the AMPS and the TDMA modes):
Code
Command
Status
Action/Initial Value
E
Set
TXPOWIDX
0..7
Sets the current TRU power level attenuation number. The
TRU has maximum output power when power level is set at
“0” (no attenuation). The status is shown in the Power Level
or TxPwrIndex field.
Note:
Nortel Networks recommends that you set the power
level at “0” unless otherwise specified as a site requirement.
F
Set
MAXTXPOW
-1.0 dBm to
27.0 dBm
Note:
These
values are for
NO PATYPE
used in Urban.
Defines the maximum power level (dBm) which maps to an
Attenuation Level number of “0” and updates the TRU
Power or MaxTxPwr field. Due to the nature of this
command, it is not available if you have not previously set
the TRU power level.
Note:
If the TRU transmitter is on (C command) and the
power level is set (E command), the TRU output power
changes immediately when this command is entered.
U
Set
TXPOWSTEP
1..4
Sets the current MCPA power step size number (1.00 dB to
4.00 dB in 0.25 dB steps). The status is shown in the Power
Step or TxPwrStep field.
Note:
Nortel Networks recommends that you set the power
step size at “4” unless otherwise specified as a site
requirement.
- continued -
TRU Power Settings
TRU
Output
Max Power/
MAXTXPOW
Power Level/
TXPOWIDX
Power Step size/
TXPOWSTEP
Power (in dBm)
1
15.75
0 (no attenuation)
4.00 (default)
15.75 - (0 x 4.00) = 15.75
2
27.00 (default)
3
3.75
27.00 - (3 x 3.75) = 15.75
3
27.00 (default)
5
2.25
27.00 - (5 x 2.25) = 15.75
Summary of Contents for DualMode 800
Page 2: ......
Page 4: ......
Page 6: ...vi Publication history Nortel Networks Confidential 411 2051 500 Draft 00 01 November 1999...
Page 82: ...2 20 Periodic maintenance 411 2051 500 Draft 00 01 November 1999...
Page 90: ...3 8 Test equipment and precautions 411 2051 500 Draft 00 01 November 1999...
Page 100: ...5 6 Master Oscillator tests 411 2051 500 Draft 00 01 November 1999...
Page 106: ...6 6 Antenna and transmission line tests 411 2051 500 Draft 00 01 November 1999...
Page 116: ...8 4 Alarm Control Unit ACU tests 411 2051 500 Draft 00 01 November 1999...
Page 138: ...10 2 ICRM tests 411 2051 500 Draft 00 01 November 1999...
Page 200: ...12 10 Enclosure maintenance 411 2051 500 Draft 00 01 November 1999...
Page 208: ...A 8 Appendix A Frequency table 411 2051 500 Draft 00 01 November 1999...
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