Motorola Pr400 Basic 6881096c24 A Manual

							6881096C24-AAugust, 2004
Radio Alignment Procedures: Transmitter Alignment Options 5-7
5.4.3.1  To Perform Transmit High Power Tuning, do the following:
1.Under the Tx Align menu, select Transmit Power, then select High (Figure 5-5).
2.Press PTT Toggle. This will key the radio up at 1st test frequency (F1).   
3.Adjust the high power level to be as defined by Table 5-3. Move the slider/spin control or keying in 
values in the edit control (press ENTER to confirm your selection after typing in the softpot value).
4.Press PTT Toggle to dekey the radio, go to the next frequency point by selecting the slider, typing 
in the edit control box (press ENTER to confirm selection after typing in the softpot value) or tog-
gling the softpot value using the spin control. 
5.Press PTT Toggle again to key up the radio at the selected frequency point.
6.Repeat steps 3-5 for the remaining test frequencies (F2-7)
7.Press Program to store the softpot values into the radio’s codeplug.
8.Exit the Transmit High Power function.
9.If the radio uses only high power channels, proceed to adjust modulation. If low power channels 
are used, perform Transmit Low Power Tuning as defined.
5.4.3.2  To Perform Transmit Low Power Tuning, do the following: -
1.Under the Tx Align menu, select Transmit Power, and then select Low.
2.Press PTT Toggle. This will key the radio up at 1st test frequency (F1).Table 5-3.  Transmit High/Low Power Level 
RF Band (MHz) Model Number High Power(W) Low Power (W)
16 Channel VHF 136-162 MHzAAH65JDC9AA2AN5.2-5.51.1-1.3
32 Channel VHF 136-162 MHz AAH65JDF9AA3AN 5.2-5.5 1.1-1.3
64 Channel VHF 136-162 MHzAAH65JDH9AA4AN5.2-5.51.1-1.3
16 Channel VHF 146-174 MHz H65KDC9AA2AN 5.2-5.5 1.1-1.3
32 Channel VHF 146-174 MHzH65KDF9AA3AN5.2-5.51.1-1.3
64 Channel VHF 146-174 MHz H65KDH9AA4AN 5.2-5.5 1.1-1.3
16 Channel UHF 1 403-440 MHzH65QDC9AA1AN4.2-4.51.1-1.3
32 Channel UHF 1 403-440 MHz H65QDF9AA1AN 4.2-4.5 1.1-1.3
64 Channel UHF 1 403-440 MHzH65QDH9AA1AN4.2-4.51.1-1.3
16 Channel UHF 2 438-470 MHz H65RDC9AA1AN 4.2-4.5 1.1-1.3
32 Channel UHF 2 438-470 MHzH65RDF9AA1AN4.2-4.51.1-1.3
64 Channel UHF 2 438-470 MHz H65RDH9AA1AN 4.2-4.5 1.1-1.3
16 Channel UHF 3 465-495 MHzH65SDC9AA1AN4.2-4.51.1-1.3
32 Channel UHF 3 465-495 MHz H65SDF9AA1AN 4.2-4.5 1.1-1.3
64 Channel UHF 3 465-495 MHzH65SDH9AA1AN4.2-4.51.1-1.3 
						

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5-8Radio Alignment Procedures: Transmitter Alignment Options
3.Adjust the power level to be as defined by country power level specifications by moving the 
slider/spin control or keying in values in the edit control (press ENTER to confirm your selection 
after typing in the softpot value).
4.Press PTT Toggle to dekey the radio, go to the next frequency point by selecting the slider, typing 
in the edit control box (press ENTER to confirm your selection) or toggling the softpot value using 
the spin control. 
5.Press PTT Toggle again to key up the radio at the selected frequency point.
6.Repeat steps 3-5 for the remaining test frequencies (F2-F7).
7.Press Program to store the softpot values into the radio’s codeplug.
8.Exit the Transmit Low Power function.
5.4.4 VCO Attenuation
Note: Modulation Balance Tuning must be done first. The Transmit Deviation Limit softpot 
sets the maximum deviation of the carrier. Tuning is performed for all (12.5 kHz, 20 
kHz and 25 kHz) channel bandwidths. Tuning for 25 kHz channels must be done first 
for all frequency points. Tuning for 12.5 and 20 kHz channels determines only the off-
set to the previously tuned deviation for 25 kHz tuning channel spacing. For 12.5, and 
20kHz channels, only the last non-0 transmit frequency point (normally F7) is used 
for tuning. The 30 kHz channel bandwidths that use 5.0 kHz maximum system devia-
tion are covered by the 25 kHz tuning.
When using test box RLN4460: 
 Set the METER OUT toggle switch to the “MIC PORT” position 
 Set the METER OUT selector switch to MIC”. 
 Inject a 1 kHz tone with the levels given below for each radio model to AUDIO IN.
 Measure the level at the radio input at the AC/DC meter.
Figure 5-6.  VCO Attenuation Window (12.5 kHz) 
						

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Radio Alignment Procedures: Transmitter Alignment Options 5-9
5.4.4.1  VCO Attenuation 25 kHz
1.Under the Tx Align menu, select VCO Attenuation 25 kHz (Figure 5-6).   
2.Begin with the lowest frequency. Select the thumb of the slider at the lowest frequency point and 
then press the PTT Toggle button to key up the radio at the corresponding frequency point. The 
spin control can also be toggled via its up/down arrow buttons. The softpot value can also be 
typed into the edit control (press ENTER to confirm your selection/send a softpot value). 
3. Inject 1 kHz at an appropriate level until 2.3 V rms is measured at the AC/DC METER (radio 
input) if using test box RLN4460.
4.Record the deviation obtained.
5.Adjust the slider; adjust the spin control or key in softpot values (press ENTER to confirm) for the 
frequency point until the deviation is within the range specified in Table 5-4.
6.Dekey the radio (Press the PTT Toggle button). Choose the next frequency, key up and repeat 
steps 3 to 6 until all seven tuning points are done.
7.Program the softpot value by pressing the Program button.
8.Exit the VCO Attn. 25 kHz function.
5.4.4.2  VCO Attenuation 12.5 kHz
1.Under the Tx Align menu, select VCO Attenuation 12.5 kHz.
2.Press PTT Toggle to key up the radio at the last non-0 transmit frequency point (normally F7).
3.Inject 1 kHz at an appropriate level until 2.3 V rms is measured at the AC/DC METER (radio 
input) if using test box RLN4460.
4.Record the deviation obtained.
5.Adjust the slider, adjust the spin control or key in softpot values (press ENTER to confirm) for the 
frequency point until the deviation is within the range specified in Table 5-4.
6.Press PTT Toggle to dekey the radio.
7.Program the softpot value by pressing the Program button.
8.Exit the VCO Attenuation 12.5 kHz function.
5.4.4.3  VCO Attenuation 20 kHz
1.Under the Tx Align menu, select VCO Attenuation 20 kHz.
2.Press PTT Toggle to key up the radio at the last non-0 transmit frequency point (normally F7).
3.Inject 1 kHz: at an appropriate level until 2.3 V rms is measured at the AC/DC METER (radio 
input) if using test box RLN4460.
4.Record the deviation obtained.
5.Adjust the slider; adjust the spin control or key in softpot values (press ENTER to confirm) for the 
frequency point until the deviation is within the range specified in Table 5-4.
6.Press PTT Toggle to dekey the radio.
7.Program the softpot value by pressing the Program button.
8.Exit the VCO Attn. 20 kHz function. Note:
 Tuning of Modulation Balance Attenutation and VCO Attenuation for 25 kHz channel 
bandwidth must be done first.
Note:
Tuning of Modulation Balance Attn. and VCO Attn. for 25 kHz channel bandwidth 
must be done first. 
						

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5-10Radio Alignment Procedures: Transmitter Alignment Options
Table 5-4.  Deviation Specifications 
5.4.5 DTMF Deviation Tuning
This tuning option controls the Dual Tone MultiFrequency deviation. Please note that Modulation 
Balancing and VCO Attenuation have to be performed prior to this tuning operation. Not doing so 
will result in the wrong deviation value being obtained while tuning the DTMF.
1.Under Tx Align, select DTMF Deviation (Figure 5-7).
2.Press PTT Toggle to key the radio. Monitor the deviation obtained.
3.Adjust the slider, spin or edit control (press ENTER to confirm your selection/send a softpot value) 
until a deviation of 3.1-3.4 kHz is obtained.
4.Press PTT Toggle again to dekey the radio.
5.Program the softpot value into the radio by pressing Program.
6.Exit the DTMF Deviation function.
Band Channel Spacing Deviation (kHz)
UHF/VHF25 kHz4.40 - 4.60
UHF/VHF 12.5 kHz 2.20 - 2.30
UHF/VHF20 kHz3.40 - 3.60
Figure 5-7.  DTMF Deviation Tuning Window 
						

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Radio Alignment Procedures: Receiver Tuning 5-11
5.4.6 MDC1200 Deviation Tuning (MDC radios only)
This tuning option controls the MDC1200 Signaling deviation. Please note that Modulation Balancing 
and VCO Attenuation have to be performed prior to this tuning operation. Not doing so will result in 
the wrong deviation value being obtained while tuning this feature.
1.Under the Tx Align, select MDC1200 Signaling (Figure 5-8).
2.Press PTT Toggle to key the radio up. Monitor the deviation obtained.
3.Adjust the slider, spin or edit control (press ENTER to confirm the selection/send a softpot value) 
until a deviation of 3.3-3.7 kHz is obtained.
4.Press PTT Toggle again to dekey the radio.
5.Program the softpot value into the radio by pressing the Program. 
6.Exit the MDC1200 Deviation function.
5.5 Receiver Tuning
The following sub-sections contain the procedures to tune the radio receiver. These procedures 
include: 
• Rated Volume
• Squelch Tuning Front End Filter TuningFigure 5-8.  MDC1200 Deviation Tuning Window 
						

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5-12Radio Alignment Procedures: Receiver Tuning
5.5.1 Rated Volume Tuning
Perform the rated volume tuning procedure as follows:
1.Under the Rx Align menu, select Rated Volume (Figure 5-9).
2.Inject a -47 dBm rf signal modulated with 1 kHz tone at 3 KHz (for 25 kHz channel spacing). 
3.Adjust the softpot value by using the slider, keying in the edit box (press ENTER to confirm the 
selection or send a softpot value), or via the spin controls. Repeat this until 500 mW (3.46 V) 
audio power is obtained. Rated Audio tuning is only done for 25 kHz channel spacing.
4.Press Program to commit the softpot value into the radio.
5.Exit the rated volume tuning function. Note:
When using test box RLN4460, the received audio output is taken from the AC/DC 
METER OUT terminals with the METER OUT rotary switch set to RX. The rated audio 
tuning procedure automatically configures the radio for 25 KHz. This means that a 
3 kHz (for 25 kHz channel spacing) deviation must always be used, irrespective of the 
radio channel bandwidth.
Figure 5-9.  Rated Volume Tuning Window 
						

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Radio Alignment Procedures: Receiver Tuning 5-13
5.5.2 Squelch Tuning
5.5.2.1  Manual Squelch Tuning
Perform the squelch tuning procedure as follows:
1.Under the Rx Align menu, select Squelch Attenuation. Select Squelch Attenuation 12.5 kHz 
or Squelch Attenuation 25 kHz Channel Spacing variations (Figure 5-10). 
2.Apply an RF signal modulated with a 1 kHz tone at 60% rated deviation listed in Table 5-5 for cur-
rent frequency point (F1 being the first) of 10 dB SINAD. That is, adjust the reference signal level 
until 10 dB SINAD is obtained at the SINAD meter. Squelch tuning can either be done manually 
(see Manual Squelch Tuning for procedure) or by Auto Squelch (see Manual Squelch Tuning for pro-
cedure). To obtain 10 dB, unmute the radio first by dragging the corresponding slider value to 1.
Note:1. Squelch tuning can only be accomplished after reference oscillator warping.
2. When using the test box RLN4460, the received audio output is taken from the AC/
DC METER OUT terminals with the METER OUT rotary switch set to RX. It is recom-
mended that Rated Volume Tuning be performed so the the correct 10 dB SINAD level 
can be obtained.
3. This tuning method is performed for multiple squelch tuning channels and multiple 
channel spacings.
Figure 5-10.  Squelch Tuning Window
Table 5-5.  Squelch Deviation Values
Channel Spacing Rated System Deviation Signal Generator Deviation
25 kHz5.0 kHz3.0 kHz
12.5 kHz 2.5 kHz 1.5 kHz
20 kHz4.0 kHz2.4 kHz 
						

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5-14Radio Alignment Procedures: Receiver Tuning
3.Set softpot to its maximum value to mute the radio.
4.Adjust the softpot value by using the slider, keying in the edit box or using the spin controls. Press 
ENTER to confirm the selection or use the spin controls. Do this until the radio is totally unmuted. 
Verify the squelch closing by inputting a signal level of 4 dB lower than that of the 10 dB SINAD 
level.
5.Repeat Steps 2 through 4 of Manual Squelch Tuning, for frequency points F2-F7.
6.Press Program to commit the softpot values into the radio.
7.Exit the Squelch Tuning function.
5.5.2.2  Auto Tune
When you press the Auto Tune button, the radio automatically returns an optimum squelch value.
After you press the button, the radio may need time to produce an optimal setting for the squelch 
attenuation. The following steps describe the auto tune process:
1.Select current frequency point (F1 being the first), then press Auto Tune.
2.Repeat Steps 3-4 of the Manual Squelch Tuning section for frequency points F2-F7.
5.5.3 RSSI System Level Tuning
1.Under the Rx Align menu, select RSSI Tuning (Figure 5-11).
2.Inject an on channel signal to the radio at -47 dBm at the frequency listed. Modulate the signal 
with a 1 kHz tone at 60% deviation (3 kHz) to verify that the radio is receiving the desired fre-
quency. RSSI tuning is only done at 25 kHz channel spacing.
3.Change the level to the defined dBm level in the softpot box. (-115 dBm or -105 dBm).
4.Press the Update button for the softspot to be tuned to the RSSI value correlating to the applied 
level. The programmed RSSI value will be displayed. Note:
Proceed with caution since this procedure automatically programs the softpot value 
into your radio.
Note:
Auto Tune will automatically update your radio’s codeplug. Please be careful when 
using it.
Figure 5-11.  RSSI Tuning 
						

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Radio Alignment Procedures: Utilities5-15
5.Adjust the input level to reflect the next softspot value. Repeat steps 3 and 4 to tune the next 
value.
5.5.4 RSSI Display Tuning
1.Under the Rx Align menu, select RSSI Display Tuning.
2.Inject an on channel signal to the radio at -47 dBm at the frequency listed. Modulated the signal 
with a 1 kHz tone at 60% deviation (3 kHz) to verify the radio is receiving the desired frequency. 
RSSI tuning is only done at 25 kHz channel spacing.
3.Change the level to that which is needed to produce 12 SINAD (approximately -119 dBm).
4.Press the Update button for the softspot to be tuned to the RSSI value correlating to the applied 
level. The programmed RSSI value will be displayed.
5.Adjust the input level to -90 dBm.
6.Press the Update button for the softspot to be tuned to the RSSI value correlating to the applied 
level. The programmed RSSI value will be displayed.
5.6 Utilities
5.6.1 Program Serial No.
The Program Serial No. option under the Utilities heading allow the radio serial number to be 
programmed. However, the serial number of a particular radio can only be programmed if it was 
originally blank. If the serial number of the radio was not blank, then access to the screen will be 
denied.
5.6.2 Temp Comp Data Read
The Temp Comp Data Read command will read the Temp Compensation data out from the radio 
and then display it on a dialog screen. The data displayed is in 4-byte Hexadecimal form, i.e. 0-9,A-
F. e.g. A5 E9 33 3A.
5.6.3 Temp Comp Data Write
The Temp Comp Data Write command will write user Temp Compensation data into the radio. The 
user will then be presented with a dialog screen of the temp comp data to commit/write into the radio. 
The Temp Comp data can be keyed in manually by the user as 4-byte Hexadecimal form.
5.7 Radio-to-Radio Cloning
1.Cloning is the process of copying the content of one radio (source radio) into another radio (desti-
nation radio). Radio content refers to system-type features such as frequency, squelch type 
options, trunking, etc.
Radio functionality inherent in one radio cannot be cloned to another radio that does not contain the 
same functionality. Tuning and alignment information are not transferable and are not affected by 
cloning.
1.Signaling Identification Numbers (IDs) are duplicated in the cloning process. Unique IDs may be 
assigned with the CPS. Note:
The source radio’s serial number cannot be blank.
Note:
Unsuccessful cloning attempts generates a continuous tone and may be an 
indication that the destination radio’s codeplug is corrupted. 
						

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5-16Radio Alignment Procedures: Radio-to-Radio Cloning
Procedure:
1.Turn source and target radios off.
2.Connect cloning cable (AAPMKN4003) to the side connector of both radios.
3.Turn on the destination radio.
4.Press and hold the two side buttons at the same time on the source radio and then power up the 
source radio (Figure 5-12). Both radios produce a “clone-entry” tone.
5.Release both side buttons, 1 and 2.
6.When cloning is completed, the source radio produce’s a “clone-exit” tone and both the source 
and destination radios reset. 
7.Turn both radios off.
8.Disconnect the cloning cable from both radios and turn them on for normal operation.
Figure 5-12.  Side Button Locations
P1
P2
123
456
789
*0 #
Side Button 1
Side Button 2