Motorola Xtl5000 Basic 6881096c73 O Manual

							6881096C73-OJune 11, 2003
Radio Alignment Procedures: Transmitter Alignments 6-13
1. Select TX Deviation Balance (Compensation) from the Tuner Main Menu. The screen will 
indicate the transmit frequencies to be used.
Figure 6-11.  Tx Deviation Balance (Compensation) Alignment Screen
2. Left-click the highest frequency field first.
3. Left-click the PTT Tone Low button.
4. Left-click the PTT Toggle button on the screen to enable transmission. The screen indicates 
whether the radio is transmitting. Wait approximately 5 seconds until the voltage shown on R-
2670, or the deviation shown on the 8901 Analyzer, stabilizes.
5. Measure and record the AC voltage value from the R-2670 Analyzer or the deviation value 
from the 8901 Analyzer.
6. Left-click the PTT Tone High button.
7. Adjust the softpot value until the measured deviation/voltage, when using the high tone, is 
within 
±1.5% of the value observed when using the low tone.
8. Repeat steps 3-7 for the remaining frequencies.
9. Left-click the Program All button on the screen to dekey the radio and save the tuned values.
10. Left-click the Close button on the screen to return to the Tuner Main Menu. 
						

							June 11, 20036881096C73-O
6-14Radio Alignment Procedures: Transmitter Alignments
6.4.9 Tx Deviation Limit
NOTE:This alignment is required after replacing (or servicing) components on the transceiver board.
The Tx Deviation Limit alignment procedure limits the modulation of a baseband signal. It is used for 
primary modulation limiting. This procedure needs to be performed at multiple frequencies to allow 
for proper alignment across the entire RF band. The RF band is divided into frequency zones with a 
calibration point (value) in each zone.
This test can be done with either the R-2670 Communication Analyzer or the Agilent 8901 
Modulation Analyzer. The method of choice is the R-2670 Analyzer.
 Initial set up using the R-2670 Communication Analyzer:
- Connect a BNC cable between the DEMOD OUT port and the VERT/SINAD DIST/DMM 
COUNTER IN port on the R-2670.
- Press the SPF key on the R-2670 to display the SPECIAL FUNCTIONS MENU. Move the 
cursor to High Pass, and select 5 Hz on the soft key menu. Select 20 kHz for the Low 
Pass setting.
- In the RF Control section of the R-2670, enter the frequency displayed on the tuner 
screen. Move the cursor to the B/W setting and select WIDE 
±100 kHz on the soft key 
menu.
- Place the R-2670 cursor in the Display zone. Select AC VOLTS on the soft key menu.
- Move the cursor to the Range setting and select AUTO.
 Initial set up using the 8901 Modulation Analyzer:
- Press the FM MEASUREMENT button. (The Error 03-input level too low indication is 
normal until an input signal is applied.)
- Simultaneously press the Peak - and Peak + buttons. Both LEDs on the buttons should 
light.
- Press the 15 kHz LP filter key.
1. Select TX Deviation Limit from the Tuner Main Menu. The screen will indicate the transmit 
frequencies to be used. See Figure 6-12 on page 6-15. 
						

							6881096C73-OJune 11, 2003
Radio Alignment Procedures: Transmitter Alignments 6-15
Figure 6-12.  Tx Deviation Limit Alignment Screen
2. Left-click the highest frequency field first.
3. Left-click the PTT Toggle button on the screen to make the radio transmit. Wait 
approximately 5 seconds until the deviation/voltage displayed on the analyzer stabilizes. The 
screen indicates whether the radio is transmitting.
4. Adjust the deviation limit between 0.158 and 0.163 Vac on the R-2670 (2.785 to 2.885 kHz). 
The optimum setting is 0.160 Vac (2.83 kHz).
5. Repeat steps 3-5 for the remaining frequencies.
6. Left-click the Program All button on the screen to dekey the radio and save the tuned values.
7. Left-click the Close button on the screen to return to the Tuner Main Menu. 
						

							June 11, 20036881096C73-O
6-16Radio Alignment Procedures: Performance Testing
6.5 Performance Testing
6.5.1 Bit Error Rate (BER) Test
This procedure tests the Bit Error Rate (BER) of the radio’s receiver at a desired frequency and 
contains the fields described in Table 6-16.
Figure 6-13.  Bit Error Rate Screen
Table 6-16.  Bit Error Rate Test Fields
FieldDescription
Rx Frequency Selects the Receive Frequency in MHz.
Test Pattern Selects the Digital test pattern - TIA. Choices are: Standard Tone 
Test Pattern (framed 1011) and Standard Interface Test Pattern 
(CCITT V.52).
Modulation Type Selects the digital modulation type of the incoming signal on which 
BER is to be calculated.
Continuous Operation Allows the user to adjust the number of test repetitions. A selection of 
Ye s will cause the radio to calculate BER on a continuous basis 
indefinitely and update the results on this screen after each 
integration time. A selection of No will cause the BER test to execute 
only one sample and then update the display.
NOTE:When Continuous Operation = Yes, all fields will be grayed 
out while the test is in progress. They will be enabled when 
the test is complete, or if the STOP button is pressed.
When Continuous Operation = No, a wait cursor will be 
displayed while the test is in progress and return to normal 
when the test is done. 
						

							6881096C73-OJune 11, 2003
Radio Alignment Procedures: Performance Testing 6-17
6.5.2 Transmitter Test Pattern
This procedure allows you to generate test patterns at selectable frequencies and channel spacing 
to check the transmitter. The procedure contains the fields described in Table 6-17:
NOTE:Channel Spacing and Test Pattern Type fields will be grayed out while radio is transmitting.
Figure 6-14.  Transmitter Test Pattern Screen
Audio Allows the user to select the audio output during a test.
Selecting External will route the same signal to the radio’s accessory 
connector audio output.
Selecting Internal is not supported.
Selecting Mute will disable the audio output.
BER  Integration  Time Represents the amount of time during which the Bit Error Rate is to be 
calculated. Remember that integration over a longer time period 
results in a more precise measurement, at the expense of more time 
per measurement.
NOTE:This is especially useful in fading measurements.
The range is from 0.360 to 91.8 seconds in increments of 0.360 
seconds.
Table 6-17.  Transmitter Test Pattern Fields
FieldDescription
Tx Frequency This field selects the Transmit Frequency directly in MHz.
Channel Spacing This field allows the user to select the desired transmit deviation in kHz.
Test Pattern Type This field represents the type of test pattern which will be transmitted by 
the radio when the PTT Toggle button is pressed.
Table 6-16.  Bit Error Rate Test Fields (Continued)
FieldDescription 
						

							June 11, 20036881096C73-O
6-18Radio Alignment Procedures: Mic Sensitivity Calibration
6.6 Mic Sensitivity Calibration
This procedure allows you to calibrate the microphone sensitivity level at each CPS setting 
(-12, -9, .... +9, +12), eliminating tolerances and deviations in the microphone hardware lineup 
circuitry. By tuning each CPS setting, the microphone sensitivity will be adjusted to exactly 3 dB 
difference between every 2 consecutive settings throughout the programmable range of the circuit. 
The Autotune All button will calibrate all nine settings in one adjustment.
Figure 6-15.  Mic Sensitivity Calibration Screen 
						

							Chapter 7 Encryption
7.1 Universal Crypto Module Kits
NOTE:This information applies to both conventional and trunked systems.
The encryption modules use a custom encryption IC and an encryption key variable to perform their 
encode/decode functions. The encryption key variable is loaded into the encryption module using a 
key variable loader (KVL). The encryption IC corresponds to the particular encryption algorithm 
purchased.
Table 7-1 contains the Universal Crypto Module (UCM) kits and their corresponding algorithms for 
secure-equipped XTL 5000 radios.
7.1.1 Secure Interface Boards
Table 7-2 contains the secure interface board kits, which are used in conjunction with the UCM kits. 
Every secure-equipped radio must contain one of the two secure interface board kits, which is paired 
with one of the UCM kits.
7.1.2 Secure Dispatch Operation
For personalities or talkgroups that are programmed to be secure-selectable, press and release the 
Secure button to toggle between Secure and Clear. 
 An illuminated secure status annunciator indicates that the transmitted signal will be encrypted 
when the PTT button is pressed.
 The absence of the secure status annunciator indicates that the transmitted signal will not be 
encrypted.Table 7-1.  UCM Kit Listing
Kit NumberDescription
NNTN4006 DES, DES-XL, DES-OFB ENCRYPTION KIT–UCM
NTN9837 DES, DES-XL, DES-OFB WITH DVP-XL ENCRYPTION KIT–UCM
NTN9838 DVI-XL ENCRYPTION KIT–UCM
NTN9839 DVP-XL ENCRYPTION KIT–UCM
Table 7-2.  Secure Interface Board Kits
Kit NumberDescription
HLN6876 Secure Interface Board, 3-day key retention
HLN6877 Secure Interface Board, 30-second key retention 
						

							June 11, 20036881096C73-O
7-2Encryption: Load an Encryption Key
Whether the current personality is strapped for secure or clear, the secure status annunciator 
correctly displays the transmit operation as being either secure (encrypted) or clear (non-encrypted).
NOTE:You cannot change from secure to clear while the PTT button is pressed. The radio will 
generate an illegal tone and the transmission will be terminated.
Secure-equipped radios automatically determine whether a secure or clear voice message is being 
received. This allows you to receive either type of message without having to reset the 
programmable secure button.
7.1.3 Secure Emergency Operation
Clear or Secure emergency-call operation is determined by the programming of the selected mode 
(or talkgroup) or the default emergency mode, if set up. Otherwise, transmit operation is controlled 
by the setting of the secure, programmable button. You will not be able to change from Secure to 
Clear, or from Clear to Secure, operation during an emergency call.
7.2 Load an Encryption Key
7.2.1 W3 Control Head
To load an encryption key into a W3 control-head equipped radio:
1. Ensure that an encryption module is installed in the radio.
2. Load an encryption key into the radio’s memory from a key-variable loader (KVL) 
using the correct loader for the radio’s encryption type.
To load the key, attach the keyloader cable to the front of the radio. (Refer to the 
KVL instruction manual for loading.)
3.
KEYLOADING is displayed on your radio while the key 
transfer is in progress.
For single-key radios, a short tone sounds when a key is successfully loaded.
For multikey radios, an alternating tone sounds for a few seconds after keys are 
successfully loaded.
NOTE:An invalid encryption key aborts a secure transmission. 
KEYFAIL is 
displayed and a keyfail tone (consecutive medium-pitched beeps) sounds 
until you release the PTT button.
4. If a mode is not programmed for either secure or clear-only operation, use the 
secure programmable button to select secure or clear transmission.
NOTE:You cannot change from secure to clear, or from clear to secure, while 
pressing the PTT button. 
						

							6881096C73-OJune 11, 2003
Encryption: Advanced Secure Operation7-3
7.2.2 W4, W5, W7, and W9 Control Heads
To load an encryption key into a W4, W5, W7, or W9 control-head equipped radio:
7.3 Advanced Secure Operation
NOTE:The Advanced Secure feature is available only on radios that have been equipped by the 
factory to support it. The radio must also be equipped with an encryption module.
Advanced Secure incorporates the Multikey feature and a dual-encryption feature into the existing 
secure system. Multikey allows a radio to be equipped with multiple encryption keys. A default key is 
included and is associated with the current mode. The keys are strapped to a given mode or are 
operator-selectable and can be indexed into groups of keys called keysets. The keys are loaded 
using a manual keyloader.
In addition, your radio can support up to eight different encryption algorithms simultaneously.
7.3.1 Multikey Operation
The multikey feature can be used in both conventional and trunked applications.
Conventional Multikey - The encryption keys can be selectively strapped, one per each 
channel. In addition, the programmable radio features include operator-selectable keys, 
operator-selectable indices, and operator-selectable key erasure. Encryption keys are loaded 
into the radio through a KVL.
Trunked Multikey - If the radio is used for both conventional and trunked applications, the 
encryption keys have to be strapped for trunking on a talkgroup, or announcement group, basis. 
In addition, a different encryption key can be strapped to other features, such as Private Call, 
Dynamic Regrouping, Failsoft, Interconnect, System Wide, or Emergency Talkgroup.
7.4 Erase a Key
This feature allows you to select any one, or all, of the encryption keys to erase.1. Turn on the radio and set the volume level.
The position of the 
D button is not important.
2. Connect the cable from the key-variable loader (KVL) to the microphone connector 
on the radio.
3. Load an encryption key into the radio’s memory from a KVL using the correct loader 
for the radio’s encryption type.
Refer to your KVL user’s manual for more information on keyloading. 
						

							June 11, 20036881096C73-O
7-4Encryption: Erase a Key
7.4.1 W3 Control Head
1. Press > to scroll to ERAS.
2. Press the 
m button below ERAS.
The last selected and stored key is displayed.
3. Do one of the following:
NOTE:
ERASED alternates with the key name if you go to a key that has been 
erased.
Press 
> to scroll forward in the list; press < to scroll backward.
OR
With Direct Entry, press the numeric keys to jump to the desired encryption key.
4. Go to 
Section 7.5: “Erase a Single Key (W3 Control Head)” on page 7-6.