E F Johnson 2425110 242-5110 User Manual 011402 revised 1 Pages 57 to 85 operators manual

E. F. Johnson Company 242-5110 011402 revised 1 Pages 57 to 85 operators manual

011402 revised 1 Pages 57 to 85 operators manual

Download: E F Johnson 2425110 242-5110 User Manual 011402 revised 1 Pages 57 to 85 operators manual
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Document Title011402 revised 1 Pages 57 to 85 operators manual

TRANSCEIVER PROGRAMMING
Figure 3-4 Conventional Project 25 Digital Channel Screen
3.5.7 CONVENTIONAL PROJECT 25 (DIGITAL)
CHANNEL SCREEN PARAMETERS
Busy Channel Lockout
Off = disabled, Noise = transmit disallowed if
carrier is detected, NAC = transmit allowed only if
correct NAC is detected (Section 2.6.5).
The following parameters are programmed in the
conventional Project 25 digital channel screen shown
in Figure 3-4. Refer to Section 2.6.16 for more information on Project 25 operation.
Access Codes
Programs the transmit and receive NAC
(Network Access Code). These codes can be 0-4095.
Refer to Section 2.6.16 for more information.
The Selected Channel, Channel Type, Transmit
Power, and Transmit Time-Out Parameters are
programmed the same as with analog channels
described in preceding section.
Mixed Mode
Talk Groups
A mixed mode that allows both analog and
Project 25 operation to be programmed on a channel
can be enabled on the Project 25 channel screen (see
Figure 3-4). This mode is programmed as follows:
This selects the Project 25 talk group that is
assigned to the channel. The talk group programs the
talk group ID, strapping mode, and encryption key
address. Talk groups for Project 25 channels are
programmed in the Conventional System Talk Group
screen described in Section 3.5.4.
Enable - Checking this box selects mixed
analog/Project 25 operation on the channel.
Strapped to Selected Group - If this parameter is
selected, the talk group on that channel is always the
selected talk group and cannot be changed.
Tx Analog - Checking this box selects Transmit =
analog/Receive = Project 25. If it is not checked,
the opposite is selected.
Radio List Selectable - If this parameter is selected,
the talk group may be changed by the radio operator
using the (Digital) Talk Group Select option switch.
When the mixed mode is selected, the channel
modulation, coded squelch, and ANI signaling parameters for the analog channel must then be programmed.
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These parameters are programmed the same as
described in Section 3.5.6.
The preceding SMARTNET/SmartZone System
General screen programs the following parameters:
3.6 PROGRAMMING SMARTNET/SMARTZONE
SYSTEMS AND CHANNELS
Restricted Access
Change System ID Button - Displays the Change
System ID screen which is used to enter the system
ID of the system. This ID is entered as a hexadecimal
number from 0-9 and A-F. Valid numbers are from
0001-FFFF. The system ID corresponding to the
desired ID must also be located in the “key” subdirectory of the program file.
3.6.1 INTRODUCTION
To program SMARTNET and SmartZone
systems and channels, proceed as follows:
1. Program the SMARTNET/SmartZone radio-wide
information as described in Section 3.4.
System ID - Read-only field which shows the ID of
the system currently being edited.
2. To create a new SMARTNET/SmartZone system,
select the Systems > Add Systems in the menu bar
(see Section 3.1.11). Up to sixteen systems of any
type can be programmed as described in Section
1.2.5.
Splinter Channels
When splinter channels are enabled, the receive
and transmit frequencies are 12.5 kHz lower than the
normal frequencies. Splinter channels are used only as
required in the Mexico and Canada border areas for
frequencies between 806 and 820.975 MHz.
3. Program the SMARTNET/SmartZone system information as described starting in the next section.
Make sure the desired SMARTNET or SmartZone
system is displayed by clicking it in the left pane or
selecting it in the Window menu in the menu bar
(see Section 3.1.9). Then program the channels as
described starting in Section 3.6.8.
Channel Modulation
When “Wideband” is enabled, the radio operates
with a 4 kHz maximum deviation between 821.000
and 824.975 MHz and 5 kHz maximum deviation for
all other frequencies. When it is disabled, deviation is
5 kHz with all frequencies.
3.6.2 SMARTNET/SMARTZONE SYSTEM
GENERAL SCREEN
System Lists Button
This button displays the screens used to program
the various per system lists. Refer to Section 3.6.7 for
more information on these lists.
Dynamic Regrouping
Enable For This System - When this box is checked,
a dynamic regrouping channel is enabled. This is a
SMARTNET channel which has the corresponding
talk group dynamically set by the dispatcher.
Zone - The physical zone containing the dynamic
regrouping channel. The value is selected on the
Channel Parameters screen.
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Individual ID - Uniquely identifies the radio on a particular system. Each radio must have a different Unit
ID. Valid Unit IDs are from 1-63535.
Channel - The physical channel used for dynamic
regrouping. The value is selected on the Channel
Parameters screen.
Connect Tone - The tone expected by the controller
on the traffic channel to verify that a subscriber transmission is occurring. This tone should be set the
same as it is in the controller.
Affiliation Type
Automatic - The radio immediately affiliates with the
central controller as soon as it is turned on and automatically re-affiliates each time the talk group is
changed.
Encryption Key IDs
On PTT - The radio affiliates with the central controller only when the PTT switch is pressed.
Programs SecureNet Encryption ID selection that
is used in all except group calls.
System Wide - Key used for system-wide calls
(typically originated by the dispatcher).
Time-Out Timer
This programs the time-out timer setting for the
system. It can be programmed for 0 min, 15 sec up to
3 min, 45 sec or it can be disabled (see Section 2.4.10).
Failsoft - Key used in failsoft conditions (see Section
2.7.11).
ISW Delay
Patch Key Select - Key used in patch calls.
Increasing or decreasing this value changes the
transmission timing of ISWs relative to the reception
of OSWs.
Unit To Unit - Key used for unit-to-unit (private)
calls.
Interconnect - Key used for telephone interconnect
calls.
3.6.3 SMARTNET/SMARTZONE SYSTEM
OTHER ID’S SCREEN
Dynamic Talk Group - Key used for the dynamic
regrouping talk group when it is a standard talk
group.
Dynamic Ann. Group - Key used for the dynamic
regrouping talk group when it is an announcement
group.
3.6.4 SMARTNET/SMARTZONE SYSTEM
PHONE INTERCONNECT SCREEN
The SMARTNET/SmartZone Phone Interconnect screen follows on the next page, and it programs
the following parameters.
Phone Interconnect
Refer to Section 2.7.6 for more information on
telephone calls.
The SMARTNET/SmartZone Other ID’s screen
is shown above, and it programs the following
parameters.
Disabled - Telephone calls cannot be placed or
received.
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Answer Only - Telephone calls can be received but
not placed.
Phone DTMF Timing
Initial Delay - Delay from 50-500 milliseconds from
when a traffic channel is granted for phone interconnect to the start of the dialing out of the phone
number.
List Only - Telephone calls can be placed and
received, and numbers can be recalled from memory
only.
Digit Duration - Duration from 50-500 milliseconds
of each phone number digit.
Unlimited - Telephone calls can be placed and
received, and numbers can be recalled from memory
or dialed using a microphone keypad.
Inter-Digit Delay - Delay from 50-500 milliseconds
between each digit of a phone number. start here
3.6.5 SMARTNET/SMARTZONE SYSTEM
TALK GROUPS SCREEN
SMARTNET/SmartZone Phone Interconnect
Screen
Private Call
This is the same as above, except for private
(unit-to-unit) calls. Refer to Section 2.7.4 for more
information.
The SMARTNET/SmartZone Talk Groups screen
shown above is used to set up SMARTNET/
SmartZone talk groups and program unique talk group
information. The parameters programmed in this
screen are as follows:
Private Call II
This programs either standard or enhanced
private calls as follows:
Standard - The user does not receive any feedback
when the called radio is not active in the system.
Only a “No Answer” is received if the called radio
does not answer.
Talk Group - Selects the talk group to program. This
is the actual ID of the talk group. Talk groups are
added or deleted by clicking the Add TG or Delete
TG button (see following). Talk groups are assigned
to channels on the channel screen (see Section 3.6.9).
Enhanced - When a call is placed, the system tells the
user if the called radio is currently active in the system and within range. The calling radio displays “No
Ack” if the called radio is not active in the system
and “No Answer” if it is active but does not answer.
- Clicking this button displays a dialog
box that adds a new talk group. The alias (alpha tag)
of up to ten characters is entered, and the new group
is then added after the others that are already set up.
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Rx Secure Autodetect - With the SecureNet protocol,
selecting “Secure” enables automatic detection of
encrypted receive signals. This may increase the
response time of the radio to an incoming signal.
Selecting “Proper Key” causes the radio to search the
available SecureNet keys until it finds a match for the
current transmission.
Each SMARTNET/SmartZone system can be programmed with up to 256 talk groups.
- Clicking this button deletes the currently selected talk group (the one displayed in the
“Talk Group” box).
Failsoft Channel
Encryption Key - Selects the encryption key used on
the talk group. This is a number from 0-15 that refers
to a hardware location in the radio that contains the
real key.
Enable - Enables a failsoft channel on the talk group
if a controller failure occurs (see Section 2.7.11).
Disable - The failsoft mode is not entered if the controller fails.
3.6.6 SMARTNET/SMARTZONE SYSTEM
EMERGENCY SETTINGS SCREEN
Tx/Rx Frequency - Programs the failsoft channel
frequency if “Enabled” is checked.
Analog/Project 25
This selects the type of SMARTNET/SmartZone
channel as analog or Project 25 (digital).
Strapping Parameters
The Strapping Parameters program the channel
type (analog or Project 25 digital) and encryption on
the talk group as follows:
Clear Mode - All transmissions on the talk group
occur in the clear (unscrambled) mode.
The SMARTNET/SmartZone Emergency
Settings screen and the parameters programmed in this
screen are as follows:
Coded Mode - All transmissions on the talk group
occur in the secure (scrambled) mode selected as
follows.
Emergency Call
Enable - When the Emergency option switch and
then the PTT switch are pressed, an emergency group
call is transmitted.
Switched Mode - The clear or secure status of the
talk group is selected by the Clear/Secure option
switch.
Disable - An emergency group call is not authorized.
NOTE: Refer to Section 2.7.15 for more
SMARTNET/SmartZone encryption information.
Emergency Hot Mic
460 Scrambling/SecureNet Mode - These options
select either the Transcrypt 460 or DES type of
secure communication when either the coded or
switched strapping mode is selected.
Enable - When an emergency alarm is generated and
the emergency alarm acknowledgment received, the
emergency mode is automatically entered and transmitting begins for the time specified by the Tx Period
parameter (see following).
Tx DES/DES-XL - Selects either DES or DES-XL
encryption protocol.
Disable - Automatic transmissions do not occur.
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button on the right side of the screen. The following
information is then programmed in the dialog box that
is displayed:
Tx Period - Defines the period during which transmissions occur with the microphone audio unmuted
(without user intervention). Times of 10-120 seconds
in 10-second steps can be selected.
Entry Number - This box selects the entry to be
edited. The scroll bars to the right of this box select
the desired entry. A phone list can contain up to 16
entries. Selecting a new entry number automatically
validates and stores the current entry. If the current
entry contains an invalid field (for example, too
many digits in the phone number), the entry number
does not change and the invalid field is highlighted.
Emergency Alarm
Disabled - No emergency signal is sent when the user
presses the Emergency option switch.
Normal - When the user presses the Emergency
option switch, an emergency signal is sent to the dispatcher. Audio and visual feedback is provided by
the radio.
Entry Alias - Up to ten characters can be entered to
identify the phone number. This identification is displayed when phone numbers are selected by the user
from the list. Only uppercase letters can be entered,
so lowercase letters are automatically converted to
uppercase by the program.
Silent - Same as “Normal” except no audio or visual
feedback is provided.
Retry Counter - When “Unlimited” is selected, an
emergency call is repeated until acknowledged or
canceled. When “Limited” is checked, calls are
attempted only the specified number of times.
Phone Number - This is the number dialed when the
location is selected. Characters that can be entered
include 0-9, #, (,), and P (a “P” programs a pause).
The maximum number of digits excluding (,) and
spaces is 16, and the maximum including (,) and
spaces is 24.
3.6.7 SMARTNET/SMARTZONE SYSTEM LISTS
SCREENS
Clicking System Lists in the left pane under
SMARNET > General or the
button in the
General screen described in Section 3.6.2 displays the
screens used to program the various lists that are
unique for each SMARTNET/SmartZone system.
These screens are as follows:
Close - Clicking this button verifies the current entry,
stores it, and then closes the dialog box. If the current
entry contains an invalid field, the dialog box does
not close and the invalid field is highlighted.
Help - Accesses the Help screen. Help can also be
selected at any time by pressing the F1 key.
Trunking Phone List Screen
Message Aliasing Screen
This screen programs the phone number list if
used (see Section 2.7.6). To edit this list, click the
Trunking Phone List tab and then the “Modify List”
This screen associates an alias (name) with each
message number (see Section 2.7.8). To edit this list,
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group to be edited from the “AG” pull-down menu.
Then click the talk groups to select/de-select them and
then click the “Update List” button to make the
changes.
click the Message Aliasing tab and then the “Modify
List” button on the right side. The following information is then programmed in the dialog box that is
displayed:
Main Screen Parameters
Message Number - This box selects the message to
be edited. The scroll bars to the right of this box
select the desired message number.
Talk Groups - This is a read-only list of all talk
groups currently in the announcement group.
Message Alias - Programs the alias which can be up
to any ten alphanumeric characters.
Analog/Project 25 - Programs the type of communication associated with the announcement group.
Either analog or digital (Project 25) communication
can be selected.
Close Button - Validates the entry and closes the dialog box. The entry is also validated when another
message number is selected.
Security - Defines the type of secure communication
used, if any, for the announcement group. These
parameters are programmed similar to those on the
Talk Group screen described in Section 3.6.5.
Announcement Groups Screen
Control Channels Screen
This screen programs the announcement groups
that are used to communicate with several talk groups
simultaneously. There can be up to 3 announcement
groups per system, and each announcement group can
have up to 15 talk groups.
This screen allows the system manager to view
and edit the control channels. Each SMARTNET
system can have up to four control channels, and each
SmartZone system can have up to 32 control channels.
Only one control channel is active at a time.
To create an announcement group, click the “Add
AG” button and the “Add TGs to the AG” screen also
shown above is displayed. Enter the announcement
group ID, click the talk groups to select/deselect those
that are to be included, and then create the announcement group by clicking the “Create AG” button. To
delete the current announcement group, click the
“Delete AG” button.
To edit this list, click the Control Channels tab
and then the “Modify List” button on the right side.
The following information is then programmed in the
dialog box that is displayed:
Control Channel - Selects the control channel to be
edited. To add a new channel, click the “New Entry”
button.
To edit an announcement group, click the
“Modify List” button and select the announcement
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Close Button - Verifies the current entry, stores it,
and then closes the dialog box. If the current entry
contains an invalid field, the dialog box does not
close and the invalid field is highlighted.
Frequency - The transmit and receive frequency of
the control channel. These are the mobile frequencies, not the repeater frequencies. Only multiples of
5 kHz and 6.25 kHz are valid. With 800 MHz frequencies, a receive frequency 45 MHz above the
transmit frequency is automatically entered.
Priority Monitor Scan Screen
New Entry Button - Click this button to display the
dialog box used to add another control channel.
Trunking Call List Screen
This screen is shown above, and it allows the list
of IDs used for private calls to be programmed. A
maximum of 16 IDs can be programmed (see Section
2.7.4).
To edit this list, click the Trunking Call List tab
and then the “Modify List” button on the right side.
This following information is then programmed in the
dialog box that is displayed:
This screen is shown above, and it programs up to
three Priority Monitor scan lists that are allowed. Each
scan list can contain up to 15 channels plus a priority
channel (see Section 2.7.12). These channels must be
from the same SMARTNET/SmartZone system. Channels set up for other systems are not allowed.
Entry Number - This box selects the entry to be
edited. The scroll bars to the right of this box select
the desired entry. A phone list can contain up to 16
entries. Selecting a new entry number automatically
validates and stores the current entry. If the current
entry contains an invalid field, the entry number does
not change and the invalid field is highlighted.
To edit a list, click the Priority Monitor Scan tab
and then click the “Modify List” button on the right
side. A screen similar to the top screen shown above is
then displayed to select the channels to be included in
that scan list. Select channels as follows:
Entry Alias - Up to ten characters can be entered to
identify the user being called. This identification is
displayed when the mobile to be called is selected by
the user from the list. Only uppercase letters can be
entered, so lowercase letters are automatically converted to uppercase by the program.
1. Select the scan list to be edited using the scroll bars
next to the “Scan List To Modify” box.
2. Select the first zone with channels to be included
and select the desired channels. Repeat for the other
zones.
Call ID - This is the ID of the radio being called.
Valid entries are 1-49152. A “0” is detected as no
entry.
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3. To select the priority channel, click the Set Priority
button. Then select the desired Zone/Channel or
“None” if no priority channel is to be scanned.
4. Repeat the preceding steps for the other scan lists if
applicable.
Status Aliasing Screen
Other Band Trunking Screen
This screen organizes the available frequency
band into three sub-bands, called splits. Each split is
defined by a start frequency, stop frequency, and
channel spacing as follows. Frequencies outside the
defined split cannot be accessed by the radio. These
frequency splits must be defined the same way they
are defined for the trunking controller.
Tx and Rx Spacing - Spacing in kHz between each
potential transmit and receive frequency.
This screen is shown above, and it programs the
alias for each of up to eight status conditions that can
be sent. The meaning of each status number is defined
by the system manager. Refer to Section 2.7.9 for
more information.
Tx and Rx Start Frequency - Start in MHz of the band
split for transmit and receive frequencies.
Tx and Rx Stop Frequency - Stop in MHz of the band
split for transmit and receive frequencies.
3.6.8 SETTING UP SMARTNET/SMARTZONE
CHANNELS
To edit this list, click the Status Aliasing tab and
then the “Modify List” button on the right side. The
following information is then programmed in the
dialog box that is displayed:
The SMARTNET/SmartZone Channel screen
shown in Figure 3-5 is displayed when the
SMARTNET or SmartZone channel type is selected.
The channel screen programs unique channel parameters and also assigns channels to the selectable zones
displayed by the transceiver.
Status Number - The scroll bars to the right of this
box select the status number that is to be edited.
Status Alias - Programs up to 10 characters that identify the status. This identification is displayed when
the user selects a status condition.
The general procedure for setting up a
SMARTNET/SmartZone channel is as follows. Refer
to the descriptions which follow this procedure for
information on SMARTNET/SmartZone Channel
screen parameters.
Other Band Trunking Screen
The Other Band Trunking screen follows, and it
is displayed only when programming channels in the
VHF and UHF frequency bands. It is used to define
the relationship between the transmit and receive
channel frequencies in these bands. With 800 MHz
systems, this is not required because the difference
between the transmit and receive frequency is always
45 MHz.
1. Make sure that the desired zone is selected in the
Zone box.
2. Select the channel number in the Channels Index
box which is to be programmed with the channel.
This will be the number displayed when the channel
is selected.
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Figure 3-5 SMARTNET/SmartZone Channel Screen
3. To set up a SMARTNET channel, select
“SMARTNET” as the channel type, and to set up a
SmartZone channel, select “SmartZone”.
Selected Channel
Zone Box - Clicking the arrow to the right of this box
displays the available zones. Click on a zone to select
it. Zones and zone aliases are set up on the RadioWide General screen described in Section 3.4.2.
4. Click the Modify button to display the dialog box
shown in the lower part of Figure 3-5. This box
programs the alias (tag) that is displayed when it is
selected.
Channel Index Box - Displays the channels in the
selected zone. The channel type is selected by the
Channel Type box below it.
5. Program the other parameters in the main part of the
screen (see information which follows).
- Displays the screen shown in the lower
part of Figure 3-5. The parameters programmed in
this screen are as follows:
3.6.9 SMARTNET/SMARTZONE CHANNEL
SCREEN PARAMETERS
Channel - Selects the channel to be edited.
Alias - Programs the identification that is displayed
when the channel is selected. Up to 10
characters can be programmed.
The following parameters are programmed in the
SMARTNET/SmartZone channel screen shown in
Figure 3-5.
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TRANSCEIVER PROGRAMMING
Screen” description in Section 3.6.7). If “No Scan
List” is programmed, scanning is not selectable on
that channel.
Transmit - Not programmable because the transmit
frequency is dynamically assigned over the
air (“Trunked” is always displayed).
Receive - Dynamically assigned like the preceding
transmit frequency.
Enable This Channel - Not used because SMARTNET/SmartZone channels are always
enabled if set up. To disable a channel so
that it is not selectable, choose the conventional type and do not check this box.
Copy Parameters From Channel - If another channel
is selected in the box, the parameters from
that channel are copied to the new channel.
Auto Scan - When enabled and a channel is selected,
the radio automatically begins scanning the scan list
associated with that channel. When disabled, scanning can only be started manually by the Scan option
switch.
3.7 PASSWORD OPERATION
3.7.1 GENERAL
The 50xx portable radio can be programmed with
a Power-Up and Programming password. If the PowerUp password is enabled, it must be entered each time
power is turned on to make the radio operational. This
prevents unauthorized use. The Programming password must be entered to access the keypad programming feature of the radio. This prevents unauthorized
reprogramming of the transceiver. Currently, the 50xx
portable is the only transceiver that is programmed
with the PCTrunk software that utilizes password
access. More information on these two passwords
follows.
Channel Type
Channel Type Box - Selects the specific system from
which the channel is selected. All programmed
systems are displayed by number and type (conventional, SMARTNET, SmartZone). When a different
channel type is selected, the screen for that type of
channel is automatically displayed.
Other Screen Parameters
System Specific Information - With SMARTNET/
SmartZone systems, indicates the system ID
programmed on the system General screen (see
Section 3.6.2).
3.7.2 POWER-UP PASSWORD
The Power-Up password function is enabled on
the Radio-Wide General screen described in Section
3.4.2. This password must then be entered each time
transceiver power is turned on. In addition, since the
radio resets after downloading or uploading data, it
must be entered after performing those functions (see
Sections 3.3.3 and 3.3.4). When entering the password using the radio keypad, enter the eight password
digits and then press the ENT key. If an error is made,
press the CLR key to start over.
Talk Group - Selects the talk group selected by that
channel. Talk groups are programmed in the Talk
Group screen described in Section 3.6.5.
Announcement Group - Selects one of up to three
announcement groups selected by the channel. Refer
to “Announcement Group Screen” in Section 3.6.7
for more information.
Emergency Group - Selects the talk group used for
emergency calls.
To enable the power-up password function on the
programmer screen, the Power-Up password must be
entered. This prevents the radio from being
programmed with an unknown password which would
make it inoperable. The password is a series of eight
numbers, and it is programmed by clicking the
“Change Password” button on the Radio-Wide
General screen. The default password is eight zeros
(00000000), and it may need to be entered as the “old”
password if applicable. The password can also be
Talk Permit Tone - When enabled, a short tone
sounds after a request for a group call has been
approved by the main controller. This indicates that
speaking can begin. When disabled, no audio feedback is used to indicate when speaking can begin.
System Scan - Selects the Priority Monitor Scan list
selected by the channel (see “Priority Monitor Scan
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frequencies, trunked group IDs, and encryption information. Therefore, the radio must be reprogrammed
after this is done to make it operational again.
changed using the radio keypad when the keypad is
locked by entering the old password and then pressing
the # key. Refer to Section 2.4.3 for more information.
If the Power-Up password has been enabled in the
radio connected to the programmer, the Programming
password described in the next section must then be
entered before a data can be downloaded or uploaded.
This prevents an unauthorized person from reading
radio data or changing radio programming.
3.7.3 PROGRAMMING PASSWORD
The Programming password must be entered to
enable the Keypad Programming mode described in
Section 2.9. This prevents an unauthorized person
from changing the radio programming. As described
in the preceding section, the Programming password
must also be entered when downloading or uploading
data from a radio that has the Power-Up password
function enabled.
If the password is forgotten, it can be overridden
by pressing the lower button on the side 8 times. This
unlocks the radio and reverts to the default password
of “00000000”. However, it also erases all channel
Table 3-1 Call Guard (CTCSS/DCS) Codes and Tones
Recommended Tone Call Guard Codes
Code
Freq
Code
Freq
Code
Freq
Code
Freq
09
91.5
18
123.0
27
167.9
01
67.0
10
94.8
19
127.3
28
173.8
02
71.9
11**
97.4
20
131.8
29
179.9
03
74.4
12
100.0
21
136.5
30
186.2
04
77.0
13
103.5
22
141.3
31
192.8
05
79.7
14
107.2
23
146.2
32
203.5
06
82.5
15
110.9
24
151.4
33
210.7
07
85.4
16
114.8
25
156.7
34*
218.1
08
88.5
17
118.8
26
162.2
35*
225.7
* These tones normally are not used because of their close proximity to the voice frequencies
** This tone is normally not used because it may cause interference with adjacent tones.
Code
Freq
37*
38*
39**
40**
41**
42**
241.8
250.3
69.3
206.5
229.1
254.1
654
662
664
703
712
723
731
732
734
743
754
Recommended Digital Call Guard Codes
023
025
026
031
032
043
047
051
054
065
071
072
073
074
114
115
116
125
131
132
134
143
152
155
156
162
165
172
174
205
223
226
243
244
245
251
261
263
265
271
306
311
315
331
343
346
351
364
365
371
411
412
413
423
3-29
431
432
445
464
465
466
503
506
516
532
546
565
606
612
624
627
631
632
September 2001
Part No. 001-5100-001
TRANSCEIVER PROGRAMMING
800 MHz Channels
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
851.0125
851.0375
851.0625
851.0875
851.1125
851.1375
851.1625
851.1875
851.2125
851.2375
851.2625
851.2875
851.3125
851.3375
851.3625
851.3875
851.4125
851.4375
851.4625
851.4875
851.5125
851.5375
851.5625
851.5875
851.6125
851.6375
851.6625
851.6875
851.7125
851.7375
851.7625
851.7875
851.8125
851.8375
851.8625
851.8875
851.9125
851.9375
851.9625
851.9875
852.0125
852.0375
852.0625
852.0875
852.1125
852.1375
852.1625
852.1875
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
806.0125
806.0375
806.0625
806.0875
806.1125
806.1375
806.1625
806.1875
806.2125
806.2375
806.2625
806.2875
806.3125
806.3375
806.3625
806.3875
806.4125
806.4375
806.4625
806.4875
806.5125
806.5375
806.5625
806.5875
806.6125
806.6375
806.6625
806.6875
806.7125
806.7375
806.7625
806.7875
806.8125
806.8375
806.8625
806.8875
806.9125
806.9375
806.9625
806.9875
807.0125
807.0375
807.0625
807.0875
807.1125
807.1375
807.1625
807.1875
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
852.2125
852.2375
852.2625
852.2875
852.3125
852.3375
852.3625
852.3875
852.4125
852.4375
852.4625
852.4875
852.5125
852.5375
852.5625
852.5875
852.6125
852.6375
852.6625
852.6875
852.7125
852.7375
852.7625
852.7875
852.8125
852.8375
852.8625
852.8875
852.9125
852.9375
852.9625
852.9875
853.0125
853.0375
853.0625
853.0875
853.1125
853.1375
853.1625
853.1875
853.2125
853.2375
853.2625
853.2875
853.3125
853.3375
853.3625
853.3875
3-30
FCC Chan. Mobile Rx Mobile Tx
No.
Freq
Freq
807.2125
807.2375
807.2625
807.2875
807.3125
807.3375
807.3625
807.3875
807.4125
807.4375
807.4625
807.4875
807.5125
807.5375
807.5625
807.5875
807.6125
807.6375
807.6625
807.6875
807.7125
807.7375
807.7625
807.7875
807.8125
807.8375
807.8625
807.8875
807.9125
807.9375
807.9625
807.9875
808.0125
808.0375
808.0625
808.0875
808.1125
808.1375
808.1625
808.1875
808.2125
808.2375
808.2625
808.2875
808.3125
808.3375
808.3625
808.3875
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
853.4125
853.4375
853.4625
853.4875
853.5125
853.5375
853.5625
853.5875
853.6125
853.6375
853.6625
853.6875
853.7125
853.7375
853.7625
853.7875
853.8125
853.8375
853.8625
853.8875
853.9125
853.9375
853.9625
853.9875
854.0125
854.0375
854.0625
854.0875
854.1125
854.1375
854.1625
854.1875
854.2125
854.2375
854.2625
854.2875
854.3125
854.3375
854.3625
854.3875
854.4125
854.4375
854.4625
854.4875
854.5125
854.5375
854.5625
854.5875
808.4125
808.4375
808.4625
808.4875
808.5125
808.5375
808.5625
808.5875
808.6125
808.6375
808.6625
808.6875
808.7125
808.7375
808.7625
808.7875
808.8125
808.8375
808.8625
808.8875
808.9125
808.9375
808.9625
808.9875
809.0125
809.0375
809.0625
809.0875
809.1125
809.1375
809.1625
809.1875
809.2125
809.2375
809.2625
809.2875
809.3125
809.3375
809.3625
809.3875
809.4125
809.4375
809.4625
809.4875
809.5125
809.5375
809.5625
809.5875
September 2001
Part No. 001-5100-001
TRANSCEIVER PROGRAMMING
800 MHz Channels
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
854.6125
854.6375
854.6625
854.6875
854.7125
854.7375
854.7625
854.7875
854.8125
854.8375
854.8625
854.8875
854.9125
854.9375
854.9625
854.9875
855.0125
855.0375
855.0625
855.0875
855.1125
855.1375
855.1625
855.1875
855.2125
855.2375
855.2625
855.2875
855.3125
855.3375
855.3625
855.3875
855.4125
855.4375
855.4625
855.4875
855.5125
855.5375
855.5625
855.5875
855.6125
855.6375
855.6625
855.6875
855.7125
855.7375
855.7625
855.7875
809.6125
809.6375
809.6625
809.6875
809.7125
809.7375
809.7625
809.7875
809.8125
809.8375
809.8625
809.8875
809.9125
809.9375
809.9625
809.9875
810.0125
810.0375
810.0625
810.0875
810.1125
810.1375
810.1625
810.1875
810.2125
810.2375
810.2625
810.2875
810.3125
810.3375
810.3625
810.3875
810.4125
810.4375
810.4625
810.4875
810.5125
810.5375
810.5625
810.5875
810.6125
810.6375
810.6625
810.6875
810.7125
810.7375
810.7625
810.7875
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
855.8125
855.8375
855.8625
855.8875
855.9125
855.9375
855.9625
855.9875
856.0125
856.0375
856.0625
856.0875
856.1125
856.1375
856.1625
856.1875
856.2125
856.2375
856.2625
856.2875
856.3125
856.3375
856.3625
856.3875
856.4125
856.4375
856.4625
856.4875
856.5125
856.5375
856.5625
856.5875
856.6125
856.6375
856.6625
856.6875
856.7125
856.7375
856.7625
856.7875
856.8125
856.8375
856.8625
856.8875
856.9125
856.9375
856.9625
856.9875
3-31
810.8125
810.8375
810.8625
810.8875
810.9125
810.9375
810.9625
810.9875
811.0125
811.0375
811.0625
811.0875
811.1125
811.1375
811.1625
811.1875
811.2125
811.2375
811.2625
811.2875
811.3125
811.3375
811.3625
811.3875
811.4125
811.4375
811.4625
811.4875
811.5125
811.5375
811.5625
811.5875
811.6125
811.6375
811.6625
811.6875
811.7125
811.7375
811.7625
811.7875
811.8125
811.8375
811.8625
811.8875
811.9125
811.9375
811.9625
811.9875
FCC Chan. Mobile Rx Mobile Tx
No.
Freq
Freq
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
857.0125
857.0375
857.0625
857.0875
857.1125
857.1375
857.1625
857.1875
857.2125
857.2375
857.2625
857.2875
857.3125
857.3375
857.3625
857.3875
857.4125
857.4375
857.4625
857.4875
857.5125
857.5375
857.5625
857.5875
857.6125
857.6375
857.6625
857.6875
857.7125
857.7375
857.7625
857.7875
857.8125
857.8375
857.8625
857.8875
857.9125
857.9375
857.9625
857.9875
858.0125
858.0375
858.0625
858.0875
858.1125
858.1375
858.1625
858.1875
812.0125
812.0375
812.0625
812.0875
812.1125
812.1375
812.1625
812.1875
812.2125
812.2375
812.2625
812.2875
812.3125
812.3375
812.3625
812.3875
812.4125
812.4375
812.4625
812.4875
812.5125
812.5375
812.5625
812.5875
812.6125
812.6375
812.6625
812.6875
812.7125
812.7375
812.7625
812.7875
812.8125
812.8375
812.8625
812.8875
812.9125
812.9375
812.9625
812.9875
813.0125
813.0375
813.0625
813.0875
813.1125
813.1375
813.1625
813.1875
September 2001
Part No. 001-5100-001
TRANSCEIVER PROGRAMMING
800 MHz Channels
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
858.2125
858.2375
858.2625
858.2875
858.3125
858.3375
858.3625
858.3875
858.4125
858.4375
858.4625
858.4875
858.5125
858.5375
858.5625
858.5875
858.6125
858.6375
858.6625
858.6875
858.7125
858.7375
858.7625
858.7875
858.8125
858.8375
858.8625
858.8875
858.9125
858.9375
858.9625
858.9875
859.0125
859.0375
859.0625
859.0875
859.1125
859.1375
859.1625
859.1875
859.2125
859.2375
859.2625
859.2875
859.3125
859.3375
859.3625
859.3875
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
813.2125
813.2375
813.2625
813.2875
813.3125
813.3375
813.3625
813.3875
813.4125
813.4375
813.4625
813.4875
813.5125
813.5375
813.5625
813.5875
813.6125
813.6375
813.6625
813.6875
813.7125
813.7375
813.7625
813.7875
813.8125
813.8375
813.8625
813.8875
813.9125
813.9375
813.9625
813.9875
814.0125
814.0375
814.0625
814.0875
814.1125
814.1375
814.1625
814.1875
814.2125
814.2375
814.2625
814.2875
814.3125
814.3375
814.3625
814.3875
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
859.4125
859.4375
859.4625
859.4875
859.5125
859.5375
859.5625
859.5875
859.6125
859.6375
859.6625
859.6875
859.7125
859.7375
859.7625
859.7875
859.8125
859.8375
859.8625
859.8875
859.9125
859.9375
859.9625
859.9875
860.0125
860.0375
860.0625
860.0875
860.1125
860.1375
860.1625
860.1875
860.2125
860.2375
860.2625
860.2875
860.3125
860.3375
860.3625
860.3875
860.4125
860.4375
860.4625
860.4875
860.5125
860.5375
860.5625
860.5875
3-32
FCC Chan. Mobile Rx Mobile Tx
No.
Freq
Freq
814.4125
814.4375
814.4625
814.4875
814.5125
814.5375
814.5625
814.5875
814.6125
814.6375
814.6625
814.6875
814.7125
814.7375
814.7625
814.7875
814.8125
814.8375
814.8625
814.8875
814.9125
814.9375
814.9625
814.9875
815.0125
815.0375
815.0625
815.0875
815.1125
815.1375
815.1625
815.1875
815.2125
815.2375
815.2625
815.2875
815.3125
815.3375
815.3625
815.3875
815.4125
815.4375
815.4625
815.4875
815.5125
815.5375
815.5625
815.5875
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
860.6125
860.6375
860.6625
860.6875
860.7125
860.7375
860.7625
860.7875
860.8125
860.8375
860.8625
860.8875
860.9125
860.9375
860.9625
860.9875
861.0125
861.0375
861.0625
861.0875
861.1125
861.1375
861.1625
861.1875
861.2125
861.2375
861.2625
861.2875
861.3125
861.3375
861.3625
861.3875
861.4125
861.4375
861.4625
861.4875
861.5125
861.5375
861.5625
861.5875
861.6125
861.6375
861.6625
861.6875
861.7125
861.7375
861.7625
861.7875
815.6125
815.6375
815.6625
815.6875
815.7125
815.7375
815.7625
815.7875
815.8125
815.8375
815.8625
815.8875
815.9125
815.9375
815.9625
815.9875
816.0125
816.0375
816.0625
816.0875
816.1125
816.1375
816.1625
816.1875
816.2125
816.2375
816.2625
816.2875
816.3125
816.3375
816.3625
816.3875
816.4125
816.4375
816.4625
816.4875
816.5125
816.5375
816.5625
816.5875
816.6125
816.6375
816.6625
816.6875
816.7125
816.7375
816.7625
816.7875
September 2001
Part No. 001-5100-001
TRANSCEIVER PROGRAMMING
800 MHz Channels
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
861.8125
861.8375
861.8625
861.8875
861.9125
861.9375
861.9625
861.9875
862.0125
862.0375
862.0625
862.0875
862.1125
862.1375
862.1625
862.1875
862.2125
862.2375
862.2625
862.2875
862.3125
862.3375
862.3625
862.3875
862.4125
862.4375
862.4625
862.4875
862.5125
862.5375
862.5625
862.5875
862.6125
862.6375
862.6625
862.6875
862.7125
862.7375
862.7625
862.7875
862.8125
862.8375
862.8625
862.8875
862.9125
862.9375
862.9625
862.9875
816.8125
816.8375
816.8625
816.8875
816.9125
816.9375
816.9625
816.9875
817.0125
817.0375
817.0625
817.0875
817.1125
817.1375
817.1625
817.1875
817.2125
817.2375
817.2625
817.2875
817.3125
817.3375
817.3625
817.3875
817.4125
817.4375
817.4625
817.4875
817.5125
817.5375
817.5625
817.5875
817.6125
817.6375
817.6625
817.6875
817.7125
817.7375
817.7625
817.7875
817.8125
817.8375
817.8625
817.8875
817.9125
817.9375
817.9625
817.9875
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
863.0125
863.0375
863.0625
863.0875
863.1125
863.1375
863.1625
863.1875
863.2125
863.2375
863.2625
863.2875
863.3125
863.3375
863.3625
863.3875
863.4125
863.4375
863.4625
863.4875
863.5125
863.5375
863.5625
863.5875
863.6125
863.6375
863.6625
863.6875
863.7125
863.7375
863.7625
863.7875
863.8125
863.8375
863.8625
863.8875
863.9125
863.9375
863.9625
863.9875
864.0125
864.0375
864.0625
864.0875
864.1125
864.1375
864.1625
864.1875
3-33
818.0125
818.0375
818.0625
818.0875
818.1125
818.1375
818.1625
818.1875
818.2125
818.2375
818.2625
818.2875
818.3125
818.3375
818.3625
818.3875
818.4125
818.4375
818.4625
818.4875
818.5125
818.5375
818.5625
818.5875
818.6125
818.6375
818.6625
818.6875
818.7125
818.7375
818.7625
818.7875
818.8125
818.8375
818.8625
818.8875
818.9125
818.9375
818.9625
818.9875
819.0125
819.0375
819.0625
819.0875
819.1125
819.1375
819.1625
819.1875
FCC Chan. Mobile Rx Mobile Tx
No.
Freq
Freq
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
864.2125
864.2375
864.2625
864.2875
864.3125
864.3375
864.3625
864.3875
864.4125
864.4375
864.4625
864.4875
864.5125
864.5375
864.5625
864.5875
864.6125
864.6375
864.6625
864.6875
864.7125
864.7375
864.7625
864.7875
864.8125
864.8375
864.8625
864.8875
864.9125
864.9375
864.9625
864.9875
865.0125
865.0375
865.0625
865.0875
865.1125
865.1375
865.1625
865.1875
865.2125
865.2375
865.2625
865.2875
865.3125
865.3375
865.3625
865.3875
819.2125
819.2375
819.2625
819.2875
819.3125
819.3375
819.3625
819.3875
819.4125
819.4375
819.4625
819.4875
819.5125
819.5375
819.5625
819.5875
819.6125
819.6375
819.6625
819.6875
819.7125
819.7375
819.7625
819.7875
819.8125
819.8375
819.8625
819.8875
819.9125
819.9375
819.9625
819.9875
820.0125
820.0375
820.0625
820.0875
820.1125
820.1375
820.1625
820.1875
820.2125
820.2375
820.2625
820.2875
820.3125
820.3375
820.3625
820.3875
September 2001
Part No. 001-5100-001
TRANSCEIVER PROGRAMMING
800 MHz Channels
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
865.4125
865.4375
865.4625
865.4875
865.5125
865.5375
865.5625
865.5875
865.6125
865.6375
865.6625
865.6875
865.7125
865.7375
865.7625
865.7875
865.8125
865.8375
865.8625
865.8875
865.9125
865.9375
865.9625
865.9875
866.0000
866.0125
866.0250
866.0375
866.0500
866.0625
866.0750
866.0875
866.1000
866.1125
866.1250
866.1375
866.1500
866.1625
866.1750
866.1875
866.2000
866.2125
866.2250
866.2375
866.2500
866.2625
866.2750
866.2875
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
820.4125
820.4375
820.4625
820.4875
820.5125
820.5375
820.5625
820.5875
820.6125
820.6375
820.6625
820.6875
820.7125
820.7375
820.7625
820.7875
820.8125
820.8375
820.8625
820.8875
820.9125
820.9375
820.9625
820.9875
821.0000
821.0125
821.0250
821.0375
821.0500
821.0625
821.0750
821.0875
821.1000
821.1125
821.1250
821.1375
821.1500
821.1625
821.1750
821.1875
821.2000
821.2125
821.2250
821.2375
821.2500
821.2625
821.2750
821.2875
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
866.3000
866.3125
866.3250
866.3375
866.3500
866.3625
866.3750
866.3875
866.4000
866.4125
866.4250
866.4375
866.4500
866.4625
866.4750
866.4875
866.5000
866.5125
866.5250
866.5375
866.5500
866.5625
866.5750
866.5875
866.6000
866.6125
866.6250
866.6375
866.6500
866.6625
866.6750
866.6875
866.7000
866.7125
866.7250
866.7375
866.7500
866.7625
866.7750
866.7875
866.8000
866.8125
866.8250
866.8375
866.8500
866.8625
866.8750
866.8875
3-34
FCC Chan. Mobile Rx Mobile Tx
No.
Freq
Freq
821.3000
821.3125
821.3250
821.3375
821.3500
821.3625
821.3750
821.3875
821.4000
821.4125
821.4250
821.4375
821.4500
821.4625
821.4750
821.4875
821.5000
821.5125
821.5250
821.5375
821.5500
821.5625
821.5750
821.5875
821.6000
821.6125
821.6250
821.6375
821.6500
821.6625
821.6750
821.6875
821.7000
821.7125
821.7250
821.7375
821.7500
821.7625
821.7750
821.7875
821.8000
821.8125
821.8250
821.8375
821.8500
821.8625
821.8750
821.8875
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
866.9000
866.9125
866.9250
866.9375
866.9500
866.9625
866.9750
866.9875
867.0000
867.0125
867.0250
867.0375
867.0500
867.0625
867.0750
867.0875
867.1000
867.1125
867.1250
867.1375
867.1500
867.1625
867.1750
867.1875
867.2000
867.2125
867.2250
867.2375
867.2500
867.2625
867.2750
867.2875
867.3000
867.3125
867.3250
867.3375
867.3500
867.3625
867.3750
867.3875
867.4000
867.4125
867.4250
867.4375
867.4500
867.4625
867.4750
867.4875
821.9000
821.9125
821.9250
821.9375
821.9500
821.9625
821.9750
821.9875
822.0000
822.0125
822.0250
822.0375
822.0500
822.0625
822.0750
822.0875
822.1000
822.1125
822.1250
822.1375
822.1500
822.1625
822.1750
822.1875
822.2000
822.2125
822.2250
822.2375
822.2500
822.2625
822.2750
822.2875
822.3000
822.3125
822.3250
822.3375
822.3500
822.3625
822.3750
822.3875
822.4000
822.4125
822.4250
822.4375
822.4500
822.4625
822.4750
822.4875
September 2001
Part No. 001-5100-001
TRANSCEIVER PROGRAMMING
800 MHz Channels
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
867.5000
867.5125
867.5250
867.5375
867.5500
867.5625
867.5750
867.5875
867.6000
867.6125
867.6250
867.6375
867.6500
867.6625
867.6750
867.6875
867.7000
867.7125
867.7250
867.7375
867.7500
867.7625
867.7750
867.7875
867.8000
867.8125
867.8250
867.8375
867.8500
867.8625
867.8750
867.8875
867.9000
867.9125
867.9250
867.9375
867.9500
867.9625
867.9750
867.9875
868.0000
868.0125
868.0250
868.0375
868.0500
868.0625
868.0750
868.0875
822.5000
822.5125
822.5250
822.5375
822.5500
822.5625
822.5750
822.5875
822.6000
822.6125
822.6250
822.6375
822.6500
822.6625
822.6750
822.6875
822.7000
822.7125
822.7250
822.7375
822.7500
822.7625
822.7750
822.7875
822.8000
822.8125
822.8250
822.8375
822.8500
822.8625
822.8750
822.8875
822.9000
822.9125
822.9250
822.9375
822.9500
822.9625
822.9750
822.9875
823.0000
823.0125
823.0250
823.0375
823.0500
823.0625
823.0750
823.0875
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
868.1000
868.1125
868.1250
868.1375
868.1500
868.1625
868.1750
868.1875
868.2000
868.2125
868.2250
868.2375
868.2500
868.2625
868.2750
868.2875
868.3000
868.3125
868.3250
868.3375
868.3500
868.3625
868.3750
868.3875
868.4000
868.4125
868.4250
868.4375
868.4500
868.4625
868.4750
868.4875
868.5000
868.5125
868.5250
868.5375
868.5500
868.5625
868.5750
868.5875
868.6000
868.6125
868.6250
868.6375
868.6500
868.6625
868.6750
868.6875
3-35
823.1000
823.1125
823.1250
823.1375
823.1500
823.1625
823.1750
823.1875
823.2000
823.2125
823.2250
823.2375
823.2500
823.2625
823.2750
823.2875
823.3000
823.3125
823.3250
823.3375
823.3500
823.3625
823.3750
823.3875
823.4000
823.4125
823.4250
823.4375
823.4500
823.4625
823.4750
823.4875
823.5000
823.5125
823.5250
823.5375
823.5500
823.5625
823.5750
823.5875
823.6000
823.6125
823.6250
823.6375
823.6500
823.6625
823.6750
823.6875
FCC Chan. Mobile Rx Mobile Tx
No.
Freq
Freq
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
868.7000
868.7125
868.7250
868.7375
868.7500
868.7625
868.7750
868.7875
868.8000
868.8125
868.8250
868.8375
868.8500
868.8625
868.8750
868.8875
868.9000
868.9125
868.9250
868.9375
868.9500
868.9625
868.9750
868.9875
869.0000
869.0125
869.0250
869.0375
869.0500
869.0625
869.0750
869.0875
869.1000
869.1125
869.1250
869.1375
869.1500
869.1625
869.1750
869.1875
869.2000
869.2125
869.2250
869.2375
869.2500
869.2625
869.2750
869.2875
823.7000
823.7125
823.7250
823.7375
823.7500
823.7625
823.7750
823.7875
823.8000
823.8125
823.8250
823.8375
823.8500
823.8625
823.8750
823.8875
823.9000
823.9125
823.9250
823.9375
823.9500
823.9625
823.9750
823.9875
824.0000
824.0125
824.0250
824.0375
824.0500
824.0625
824.0750
824.0875
824.1000
824.1125
824.1250
824.1375
824.1500
824.1625
824.1750
824.1875
824.2000
824.2125
824.2250
824.2375
824.2500
824.2625
824.2750
824.2875
September 2001
Part No. 001-5100-001
TRANSCEIVER PROGRAMMING
800 MHz Channels
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
869.3000
869.3125
869.3250
869.3375
869.3500
869.3625
869.3750
869.3875
869.4000
869.4125
869.4250
869.4375
869.4500
869.4625
869.4750
869.4875
869.5000
869.5125
869.5250
824.3000
824.3125
824.3250
824.3375
824.3500
824.3625
824.3750
824.3875
824.4000
824.4125
824.4250
824.4375
824.4500
824.4625
824.4750
824.4875
824.5000
824.5125
824.5250
FCC Chan. Mobile Rx Mobile Tx
No.
Freq.
Freq
869.5375
869.5500
869.5625
869.5750
869.5875
869.6000
869.6125
869.6250
869.6375
869.6500
869.6625
869.6750
869.6875
869.7000
869.7125
869.7250
869.7375
869.7500
869.7625
3-36
824.5375
824.5500
824.5625
824.5750
824.5875
824.6000
824.6125
824.6250
824.6375
824.6500
824.6625
824.6750
824.6875
824.7000
824.7125
824.7250
824.7375
824.7500
824.7625
FCC Chan. Mobile Rx Mobile Tx
No.
Freq
Freq
869.7750
869.7875
869.8000
869.8125
869.8250
869.8375
869.8500
869.8625
869.8750
869.8875
869.9000
869.9125
869.9250
869.9375
869.9500
869.9625
869.9750
869.9875
824.7750
824.7875
824.8000
824.8125
824.8250
824.8375
824.8500
824.8625
824.8750
824.8875
824.9000
824.9125
824.9250
824.9375
824.9500
824.9625
824.9750
824.9875
September 2001
Part No. 001-5100-001
CIRCUIT DESCRIPTION
SECTION 4 CIRCUIT DESCRIPTION
4.1 GENERAL OVERVIEW
The Keypad Board provides the input/output
interface for the user. It accepts input from the keypad
and the various control knobs and sends the appropriate signals to the DSP on the Digital Board and to
the RF Board for proper configuration. It provides the
dual display information to inform the user of the
status of the radio. It also performs all RS-232 communications between the radio and remote computer
stations for the purposes of radio programming, tuning,
encryption key loading and software downloading.
4.1.1 INTRODUCTION
The E.F Johnson 5100 series digital portable
radio is a microcontroller-based radio that uses a
Digital Signal Processor (DSP) to provide the
following modes of operation:
Narrowband Analog - FM modulation with a
maximum deviation of 2.5 kHz. This mode is usually
used in systems where the channel spacing is 12.5
kHz. Call Guard (CTCSS or DCS) subaudible squelch
signaling can be used in this mode.
4.1.2 ANALOG MODE
Wideband Analog - FM modulation with a maximum
deviation of 5 kHz. This mode is usually used in
systems where the channel spacing is 25 kHz or 30
kHz. Call Guard (CTCSS or DCS) subaudible squelch
signaling can be used in this mode.
Receive Mode
The signal is routed from the antenna connector
to the RF Board where it is filtered, amplified, and
mixed with the first local oscillator frequency generated by the synthesizer. The resulting IF signal is also
filtered and amplified and sent to the ABACUS chip.
Project 25 Digital - The voice is digitized, error
corrected, optionally encrypted and transmitted using
C4FM modulation according to the Project 25 standard. This mode can be used in channel spacings of
12.5 kHz.
The signal is then mixed with the second local
oscillator frequency to create a second IF signal of 450
kHz. The second IF signal is then sampled at 14.4
Msps and downconverted to baseband. The baseband
signal is then decimated to a lower sample rate that is
selectable at 20 kHz. This signal is then routed via a
serial interface using a differential current output to
the ADSIC chip on the Digital Board.
The DSP processes the received signals and
generates the appropriate output signals. The microcontroller controls the hardware and provides an interface between hardware and DSP.
On the Digital Board the ADSIC digitally filters
the input signal, performs frequency discrimination to
obtain the message signal and then routes the message
signal to the DSP. The DSP first performs a carrierdetection squelch function on the radio. If a signal is
determined to be present, the audio portion of the
signal is resampled to an 8 kHz rate and then filtered
appropriately. The filtered signal is then routed back to
a D/A in the ADSIC to produce an analog signal for
output to the audio power amplifier (PA) and then the
speaker. Any detected signaling information is
decoded and the resulting information is sent to the
microcontroller.
PC Boards
This radio contains the following PC boards:
•
•
•
•
•
RF Board
Digital Board
Keypad Board
Four flex circuits that provide interconnection and
support for the volume, on/off, and LED controls.
Encryption board (optional)
4-1
September 2001
Part No. 001-5100-001
CIRCUIT DESCRIPTION
The signal from the microphone is amplified by
the audio PA and is then routed to the ADSIC chip
where it is first digitized at a 16 ksps rate and then sent
to the DSP. The DSP performs the required filtering,
adds the desired signaling, converts the sample rate to
48 ksps and then sends the resulting signal back to a
D/A in the ADSIC to produce the analog modulation
signal for the VCO. The modulated VCO signal is then
sent to the RF PA for transmission.
This bit stream in then encoded, two bits at a
time, into a digital level corresponding to one of the
four allowable frequency deviations. This produces
16-bit symbols with a rate of 4800 Hz. The symbols
are resampled to a rate of 48 kHz and filtered to
comply with channel bandwidth requirements. The
filtered signal is then sent to a D/A in the ADSIC to
produce the analog modulation signal for the VCO.
The modulated VCO signal is then mixed up to the
final transmit frequency and then sent to the RF PA for
transmission.
4.1.3 PROJECT 25 DIGITAL MODE
4.1.4 RF BOARD
Introduction
NOTE: The RF Board is not field serviceable. It must
be replaced as a unit with a new board.
Transmit Mode
In Project 25 Digital Mode, the carrier is modulated with 4 discrete deviation levels. These levels are
± 600 Hz and ± 1800 Hz. Digitized voice is created
using an IMBE™ vocoder.
The receiver front end consists of a preselector,
RF amplifier, second preselector, and mixer. Both
preselectors on the VHF and UHF board are varactortuned, two-pole filters controlled by the microcontroller unit through the D/A IC. The 800 MHz board
uses stripline technology for the preselector. The RF
amplifier is a dual-gate gallium-arsenide IC. The
mixer is a double-balanced, transformer-coupled
active mixer. Injection is provided by the VCO
through an injection filter. See Table 4-1 for local
oscillator (LO) and first IF information.
Receive Mode
The signal is processed in the same way as an
analog mode transmission until after the squelch function is performed. If a signal is detected to be present,
the DSP resamples the signal from 20 kHz to 24 kHz.
This is done so that the sample rate is an integer
multiple (5x) of the data rate of the digital modulation
which is 4800 symbols/sec (9600 bits/sec).
Table 4-1 LO and First IF Frequencies
VHF
The resampled signal is then processed by a
demodulator routine to extract the digital information.
The resulting bit stream (9600 bps) is sent to a routine
that performs unframing, error-correction, and voice
decoding. The result of these operations is a reconstructed voice signal sampled at 8 kHz. The sampled
voice signal is sent to a D/A in the ADSIC to produce
an analog signal for output to the audio power amplifier and speaker.
UHF
800 MHz
LO Frequency 181.15 329.65 776.65 range
219.15 MHz 446.65 MHz 796.65 MHz
First IF
45.15 MHz 73.35 MHz 73.35 MHz
Frequency
The frequency generation function is performed
by three ICs and associated circuitry. The reference
oscillator provides a frequency standard to the synthesizer/prescaler IC which controls the VCO IC. The
VCO IC actually generates the first LO and transmit
injection signals and buffers them to the required
power level. The synthesizer/prescaler circuit module
incorporates frequency division and comparison
circuitry to keep the VCO signals stable. The synthesizer/prescaler IC is controlled by the microcontroller
through a serial bus. Most of the synthesizer circuitry
is enclosed in rigid metal on the RF Board to reduce
microphonic effects.
Transmit Mode
The microphone signal is processed as in the
analog mode until it reaches the DSP. At this point the
audio signal is processed by a voice encoding routine
to digitize the information. The resulting samples are
then converted to a bit stream that is placed into the
proper framing structure and error protected. The
resulting bit stream has a bit rate of 9600 Hz.
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September 2001
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CIRCUIT DESCRIPTION
Transceiver Board
Keypad Board
Digital Board
5V
Analog
Switched RF
B+
5V Analog
Regulator
5V
Digital
5V Digital
DC/DC
Audio PA
Battery Probe
on/off
Unswitched
B+
Power
Amplifier
Low Power
Detector
Controller
Figure 4-1 Power Supply Diagram
4.1.5 DIGITAL BOARD
The receiver back end consists of a two-pole
crystal filter, IF amplifier, a second two-pole crystal
filter, and the ABACUS digital back-end IC. The two
pole filters are wide enough to accommodate 5 kHz
modulation. Final IF filtering is done digitally in the
ADSIC.
The Digital Board contains the ADSIC, DSP
(TMS320C50), static RAM, FLASH memory, and a
programmable logic IC. The RF Board and Keypad/
Display Board are connected to the Digital Board. The
ADSIC performs the Frequency Discrimination and
receiver filtering functions. It also performs analog-todigital (A/D) and digital-to-analog (D/A) conversion.
The DSP performs demodulation and modulation,
voice encoding and decoding, audio filtering, and
squelch signaling. The software for the radio is stored
in FLASH memory that is loaded in to static RAM at
turn-on. The programmable logic IC controls which
device (Flash, SRAM, or UART) is connected to the
DSP address and data bus.
The ABACUS digital back-end chip consists of
an amplifier, second mixer, IF analog-to-digital
converter, a baseband down-converter, and a 2.4 MHz
synthesis circuit to provide a clock to the ADSIC on
the Digital Board. The second LO is generated by
discrete components external to the ABACUS. The
output of the ABACUS is a digital bit stream that is
current driven on a differential pair to reduce noise
generation.
4.1.6 KEYPAD/DISPLAY BOARD
The transmitter consists of an RF power amplifier
IC that amplifies an injection signal from the VCO.
Transmit power is controlled by two custom ICs that
monitor the output of a directional coupler and adjust
the power amplifier control voltages correspondingly.
The signal passes through a Rx/Tx switch that uses
PIN diodes to automatically provide an appropriate
interface to transmit or receive signals.
The Keypad Board contains the microcontroller
(HC08), audio circuits, front LCD display assembly,
display driver, and 5V analog and 5V digital regulators. All interfaces to the side connector and the
switches are on this board. The microcontroller determines transmit/receive frequencies, power levels, and
display content. It communicates with the DSP via a
serial interface.
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CIRCUIT DESCRIPTION
4.2 POWER SUPPLY
6. The controller sets the control line to the shutdown
pin of the DC/DC converter to a high level.
4.2.1 GENERAL
7. The controller sets the radio in an operational mode.
The radio is typically powered by a battery which
is fastened at the back of the radio. The electrical
contact between the battery and the radio occurs on
probes located on the Digital board (see Figure 4-1).
However the positive battery voltage (UNSWB+) is
directly routed through a small flex circuit (Power
Flex) to contacts located on the bottom of the RF
Board.
4.2.3 POWER OFF OPERATION
When the user turns the radio off using the top
panel “on/off switch”, the following sequence of
events occur:
1. The “on/off switch” opens.
The UNSWB+ signal is then routed to the RF
power amplifier module and ALC IC on the RF Board.
It also passes through a fuse and is then routed to the
Digital Board.
2. Power is removed from the shutdown pin of the 5V
DC/DC converter.
3. The controller detects that the power is off through
the pin connected to Switched B+.
The UNSWB+ signal passes through the Digital
Board without being used and is transferred to the
Keypad Board. On the keypad board, the UNSWB+
signal is routed as follows:
•
•
•
•
•
4. The controller performs all required save
operations.
5. The controller resets the control line to the shutdown pin of the DC/DC converter.
Input of the 5V digital regulator
Electronic switch which controls the input of the 5V
analog regulator and the “switched RF B+”
“On/off switch” located on the top of the radio
Low voltage detector
Audio amplifier power FET
6. The 5-volt Digital source disappears.
7. The electronic switch opens.
4.2.2 POWER ON OPERATION
8. The switched RF B+ and 5V analog sources
disappear.
When the user turns the radio on using the top
panel “on/off switch”, the following sequence of
events occur:
4.2.4 LOW VOLTAGE DETECT
1. Power is applied to the shutdown pin of the 5V
digital regulator.
Low battery voltage is detected by a comparator
chip. When a low voltage condition is detected (less
than 6.3V), the following actions occur:
2. The 5-volt digital supply is created.
1. The low voltage detector output goes low which
alerts the controller.
3. The appearance of the 5V digital supply turns on the
electronic switch which applies the battery voltage
to the “Switched RF B+” line and to the input of the
5V analog regulator.
2. The controller prevents any action which could have
a damaging effect (like writing in flash memory).
4. The 5-volt analog supply is created.
3. The controller releases its control of the shutdown
pin of the DC/DC converter.
5. If the battery voltage is high enough, the low voltage
detector output goes high.
4. The transmitter switches to the low power mode.
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CIRCUIT DESCRIPTION
RF BOARD
Figure 4-2 RF Board Block Diagram
5. When the voltage gets really low, the 5 volt DC/DC
converter automatically shuts down.
applied to a low-pass filter. After filtering, the signal is
routed to a prescaler divider in the synthesizer.
6. The 5-volt analog and switched RF B+ sources turn
off.
The divide ratios for the prescaler circuits are
determined from information stored in an EEPROM.
The microprocessor extracts data for the division ratio
as determined by the position of the channel-select
switch and routes the signal to a comparator in the
synthesizer. A 16.8 MHz reference oscillator applies
the 16.8 MHz signal to the synthesizer. The oscillator
signal is divided into one of three pre-determined
frequencies. A time-based algorithm is used to
generate the fractional-N ratio.
4.3 RF BOARD CIRCUIT DESCRIPTION
4.3.1 FREQUENCY GENERATION UNIT
The Frequency Generation Unit (FGU) consists
of these three major sections: (1) high stability reference oscillator, (2) fractional-N synthesizer, and (3)
VCO buffer. A 5-volt regulator supplies power to the
FGU. The regulator output voltage is filtered and then
distributed to the transmit and receive VCOs and the
VCO buffer IC. The mixer LO injection signal and
transmit frequency are generated by the receive VCO
and transmit VCO, respectively. The receive VCO
uses an external active device, and the transmit VCO
active device is a transistor inside the VCO buffer.
If the two frequencies in the synthesizer’s
comparator differ, an error voltage is produced. The
phase detector error voltage is applied to the loop
filter. The filtered voltage alters the VCO frequency
until the correct frequency is synthesized.
In the transmit mode, the modulation of the
carrier is achieved by using a two-port modulation
technique. The modulation for low frequency tones,
such as CTCSS and DCS, is achieved by injecting the
tones into the A/D section of the fractional-N divider,
generating the required deviation. Modulation of the
high frequency audio signals is achieved by modulating the varactor through a frequency compensation
network.
The receive VCO is a Colpitts-type oscillator.
The receive VCO signal is received by the VCO buffer
where it is amplified by a buffer inside the IC. The
amplified signal is routed through a low-pass filter and
injected as the first LO signal into the mixer. In the
VCO buffer, the receive VCO signal is also routed to
an internal prescaler buffer. The buffered output is
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CIRCUIT DESCRIPTION
RF BOARD (CONT’D)
of the IF amplifier is applied to a second crystal filter
through a matching circuit. This filter supplies further
attenuation at the IF sidebands to increase radio
selectivity.
The transmit VCO signal is amplified by an internal buffer, routed through a low-pass filter, and then
sent to the transmit power amplifier module. The reference oscillator supplies a 16.8 MHz clock to the synthesizer where it is divided down to a 2.1 MHz clock. This
divided down clock is fed to the ABACUS IC.
In the ABACUS IC the first IF frequency is
amplified and then downconverted to 450 KHz, the
second IF frequency. At this point, the analog signal is
converted into two digital bit streams via a sigma-delta
A/D converter. The bit streams are then digitally
filtered and mixed down to baseband and filtered
again. The differential output data stream is then sent
to the ADSIC on the Digital Board where it is
processed to produce the recovered audio.
4.3.2 ANTENNA SWITCH
A pair of diodes is used to electronically steer the
RF signal between the receiver and transmitter. In the
transmit mode, RF is routed through a transmit switching diode and sent to the antenna. In receive mode, RF
is received from the antenna, routed through a receive
switching diode and applied to the RF amplifier.
The ABACUS IC is electronically programmable, and the amount of filtering, which is dependent
on the radio channel spacing and signal type, is
controlled by the microcontroller. Additional filtering,
which used to be provided externally by a conventional ceramic filter, is replaced by internal digital
filters in the ABACUS IC. The ABACUS IC contains
a feedback AGC circuit to expand the dynamic range
of the sigma-delta converter. The differential output
data contains the quadrature (I and Q) information in
16-bit words, the AGC information in a 9-bit word,
imbedded word sync information and fill bits dependent on sampling speed. A fractional-N synthesizer is
also incorporated on the ABACUS IC for 2nd LO
generation.
4.3.3 RECEIVER FRONT END
The RF signal from the antenna is sent through a
bandpass filter. The bandpass filter is electronically
tuned by the microcontroller via the D/A IC by
applying a control voltage to the varactor diodes in the
filter. The D/A output range is extended through the
use of a current mirror. Wideband operation of the
filter is achieved by retuning the bandpass filter across
the band.
The output of the bandpass filter is applied to a
wideband amplifier. After being amplified by the RF
amplifier, the RF signal is further filtered by a second
broadband, fixed tuned, bandpass filter to improve
spurious rejection.
The 2nd LO/VCO is a Colpitts oscillator. The
VCO has a varactor diode to adjust the VCO
frequency. The control signal for the varactor is
derived from a loop filter.
The filtered RF signal is routed via a broadband
50 Ω transformer to the input of a broadband mixer/
buffer. The mixer uses GaAs FETs in a doublebalanced Gilbert Cell configuration. The RF signal is
mixed with a first LO signal of about –10 dBm
supplied by the FGU. Mixing of the RF and the first
LO results in an output signal which is the first IF
frequency according to Figure 4-1. The first IF signal
output is routed through a transformer and impedance
matching components and is then applied to a twopole crystal filter. The 2-pole crystal filter removes
unwanted mixer products.
4.3.5 TRANSMITTER
The transmitter consists of three major sections:
Harmonic Filter, RF Power Amplifier, and the ALC
(Automatic Level Control) circuit.
The RF signal from the PA module is routed
through a coupler, then through the harmonic filter,
then to the antenna switch. The RF power amplifier
module is a wide-band multi-stage amplifier. The
nominal input and output impedance of the power
amplifier is 50 Ω. The DC bias for the RF power
amplifier is controlled by a switching transistor. The
microcontroller uses the D/A IC to produce a ready
4.3.4 RECEIVER BACK END
The output of the crystal filter is matched to the
input of the IF buffer amplifier transistor. The output
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CIRCUIT DESCRIPTION
REVISION 2 DIGITAL BOARD
The ADSIC is a support chip for the DSP. It
provides the interface between the DSP and the analog
signal paths, and between the DSP and the ABACUS
chip on the RF Board. Configuration of the ADSIC is
handled primarily by the microcontroller. The DSP has
access to a few memory-mapped registers on the
ADSIC.
signal for the transmit ALC IC. The synthesizer sends
a LOC signal to the transmit ALC IC. When both the
ready signal and LOC signal are available to the
transmit ALC IC, the switching transistor for the RF
power amplifier is turned on.
A coupler module samples the forward power and
the reverse power of the PA output voltage. Reverse
power is present when there is other than 50 Ω impedance at the antenna port. Sampling is achieved by
coupling some of the forward and/or reverse power for
rectification and summing. The resulting DC voltage
is then applied to the transmit ALC IC as an RF
strength indicator.
In receive mode, the ADSIC interfaces the DSP
with the ABACUS IC on the RF Board. The ADSIC
collects the I and Q samples from the ABACUS and
performs channel filtering and frequency discrimination on the signals. The resulting demodulated signal
is routed to the DSP via the serial port for further
processing. After the DSP processing, the signal is
sent to the ADSIC Speaker D/A by writing to a
memory- mapped register. The ADSIC then converts
the processed signal from the DSP to an analog signal
and then outputs this signal to the speaker power
amplifier on the keypad board.
The transmit ALC circuit is the core of the power
control loop. Circuits in the transmit ALC module
compare the RF strength indicator to a reference value
and generate a bias signal that is applied to the base of
a transistor. This transistor varies the DC control
voltage applied to the RF PA controlling the RF
power.
In transmit mode the ADSIC Microphone A/D
digitizes the analog signal from the microphone. The
DSP reads these values from a memory-mapped
register in the ADSIC. After processing, the DSP
sends the modulation signal to the ADSIC via the
serial port. In the ADSIC, the VCO D/A converts the
sampled modulation signal into an analog signal and
then routes this signal to the VCO on the RF Board.
4.4 DIGITAL BOARD
4.4.1 INTRODUCTION
The Digital Signal Processing (DSP) functions
are performed by the DSP chip (U12) and the ADSIC
(U3) with the support of FLASH (U2) and SRAM
(U5, U6) memory devices. Functions previously
performed in hardware like filtering and limiting are
performed by software running in the DSP chip. The
digital board connects with the Keypad Board via J4
and with the RF board via J1.
4.4.3 RECEIVE SIGNAL PATH
4.4.2 DIGITAL SIGNAL PROCESSING
OVERVIEW
The ABACUS IC on the RF Board provides a
digital back end for the receiver section. It provides a
digital output of I (in phase) and Q (quadrature)
samples which represent the IF signal at the receiver
back end. These samples are routed to the ADSIC
where the signal is filtered and frequency discriminated to recover the modulating signal.
The DSP section consists of a DSP chip (U12),
the ADSIC (U3), two 128K x 8-bit Static RAM chips
(U5, U6), one 512K x 16-bit FLASH ROM memory
chip (U2), a UART chip (U7), a programmable logic
IC (U1), and two glue-logic chips (U4, U9). The
FLASH ROM contains the program code executed by
the DSP. Depending on the operational mode selected
for the radio, different sections of the program code in
the FLASH ROM are copied into SRAM for faster
execution.
The recovered signal is sent to the DSP chip for
processing. The ADSIC interface to the ABACUS is
comprised of four signals SBI, DIN, DIN*, and ODC.
The ODC signal is a clock the ABACUS provides to
the ADSIC. Most internal ADSIC functions are
clocked by this ODC signal at a rate of 2.4 MHz and
are available as soon as the power is supplied to the
circuitry. This signal initially may be 2.4 or 4.8 MHz
after power-up. It is programmed by the ADSIC
through the SBI signal to 2.4 MHz when the ADSIC is
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CIRCUIT DESCRIPTION
DIGITAL BOARD (CONT’D)
memory. Some of these registers are used for additional ADSIC configuration controlled directly by the
DSP. Some of the registers are data registers for the
speaker D/A. Analog speaker audio is processed
through this parallel bus where the DSP outputs the
speaker audio digital data words to this speaker D/A.
In addition, an analog waveform is generated which is
output to SDO (Speaker Data Out).
initialized by the microcontroller through the SPI bus.
For any functionality of the ADSIC to exist, including
initial programming, the reference clock must be
present.
SBI is a programming data line for the ABACUS.
This line is used to configure the operation of the
ABACUS and is driven by the ADSIC. The microcontroller programs many of the ADSIC operational
features through the SPI interface. There are 36
configuration registers in the ADSIC of which 4
contain configuration data for the ABACUS. When
these particular registers are programmed by the
microcontroller, the ADSIC in turn sends this data to
the ABACUS through the SBI.
In conjunction with speaker D/A, ADSIC
contains a programmable attenuator to set the rough
signal attenuation. However, the fine levels and differences between signal types are adjusted through the
DSP software algorithms. The speaker D/A attenuator
setting is programmed by the microcontroller through
the SPI bus.
DIN and DIN* are the data lines in which the I
and Q data words are transferred from the ABACUS.
These signals make up a differentially encoded current
loop. Instead of sending TTL-type voltage signals, the
data is transferred by flowing current one way or the
other through the loop. This helps reduce internally
generated spurious emissions on the RF Board. The
ADSIC contains an internal current loop decoder
which translates these signals back to TTL logic and
stores the data in internal registers.
The ADSIC provides an 8 kHz interrupt to the
DSP on IRQB for processing the speaker data
samples. This 8 kHz signal must be enabled through
the SPI programming bus by the microcontroller and is
necessary for any audio processing to occur.
4.4.4 TRANSMIT SIGNAL PATH
The ADSIC contains an analog-to-digital (ADC)
converter for the microphone. The microphone path in
the ADSIC also includes an attenuator that is
programmed by the microcontroller through the SPI
bus. The microphone input in the ADSIC is on pin
MAI (U3-19). The microphone ADC converts the
analog signal to a series of data words and stores them
in internal registers. The DSP accesses this data
through the parallel data bus. As with the speaker data
samples, the DSP reads the microphone samples from
registers mapped into its memory space. The ADSIC
provides an 8 kHz interrupt to the DSP on IRQB for
processing the microphone data samples.
The ADSIC performs digital IF filtering and
frequency discrimination on the signal, sending the
baseband demodulated signal to the DSP. The internal
digital IF filter is programmable with up to 24 taps.
These taps are programmed by the microcontroller
through the SPI interface.
The DSP processes this data through the SSI
serial port. This is a six-port synchronous serial bus.
The ADSIC transfers the data to the DSP on the TxD
line at a rate of 2.4 MHz. This is clocked synchronously by the ADSIC which provides a 2.4 MHz clock
on SCKT. In addition, a 20 kHz interrupt is provided
on TFS to signal the arrival of a data packet. This
means a new I and Q sample data packet is available to
the DSP at a 20 kHz rate which represents the
sampling rate of the received data. The DSP then
processes this data to extract audio, signaling, and
other information based on the 20 kHz interrupt.
The DSP processes these microphone samples
and generates and mixes the appropriate signaling and
filters the resultant data. This data is then transferred
to the ADSIC on the DSP SSI port. The ADSIC generates a 48 kHz interrupt so that a new sample data
packet is transferred at a 48 kHz rate and sets the
transmit data sampling rate at 48 ksps. These samples
are then input to a transmit D/A which converts the
data to an analog waveform. This waveform is the
modulation signal from the ADSIC and is connected to
the VCO on the RF Board.
In addition to the SPI programming bus, the
ADSIC also contains a parallel configuration bus. This
bus is used to access registers mapped into the DSP
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CIRCUIT DESCRIPTION
DIGITAL BOARD (CONT’D)
4.4.5 DSP CHIP (U12)
The DSP accesses the difference spaces by setting
the corresponding lines PS*, DS*, IS* low. Only one
of these three signals can be low at a given time. When
the DSP accesses internal SRAM, none of these lines
is activated.
DSP chip U12 has a 16-bit data bus and a 16-bit
address bus. It has 10K words of internal SRAM from
which 0.5K are used only to store data and 9.5K are
used either for data or for program storage. The DSP
bus can access through its buses the following external
devices:
The programmable logic IC (PLD) acts as the
primary arbitrator of the DSP’s memory map. The
FLASH ROM and the SRAM are both mapped in the
program space and cannot both be active at the same
time. The DSP may control which type of memory is
mapped in program space by enabling the programmable logic IC (PLD), then manipulating a register in
the PLD. In addition, the DSP can manipulate other
registers to control paging of both the Flash and the
SRAM. Paging refers to the swapping of 64K word
blocks of Flash or SRAM into or out of the DSP’s
memory map.
SRAM U5 and U6 - These two chips are 128K x 8
chips. U5 stores the lower byte of the word while U6
stores the higher byte. Those chips are selected by
asserting CE2 high and CE1* low. The programmable
logic IC is responsible for controlling the select lines
of these ICs.
FLASH ROM U2 - This chip is 512K x 16 words in
size. It is selected by asserting CE* low. The programmable logic IC is responsible for controlling the select
line of this IC.
FLASH ROM U2 is used to permanently store
the program to be executed in the DSP. However, it is
slow to access, so to fully utilize the speed of the DSP,
the program stored in the FLASH ROM must be
copied into the SRAM. As the size of the SRAM is
half the size of the FLASH ROM, only the code
required for the current mode of operation is copied in
the SRAM. As previously mentioned, the FLASH
ROM and the SRAM cannot be active at the same
time. Thus we use the internal data memory as a
temporary buffer to transfer the program from the
FLASH ROM to the SRAM.
ADSIC U3 - The ADSIC contains several registers
which can be read from or written to by the DSP. The
ADSIC IC has an output which drives a data/address
bus enable signal for the programmable logic IC.
UART U7 - This chip converts data from the DSP into
serial data. It is used to interface with the optional
encryption board.
Programmable Logic U1 - This IC arbitrates access
to the DSP’s address/data bus between the flash (U2),
SRAMs (U5,U6), and UART (U7). The DSP can
modify the memory configuration by writing to a
series of registers in the programmable logic IC. In
order to reduce power consumption, the programmable
logic IC can be “disconnected” from the DSP’s
address/data bus using the bus enable input on the
programmable logic IC (pin 44).
The following hardware interrupts are used on the
DSP:
Interrupt
INT1*
INT2*
INT3*
The DSP uses memory as data space, program
space, and I/O space as follows. Refer to Figure 4-3
for more information.
INT4*
NMI*
Program Space - Internal SRAM, external SRAM,
and FLASH memory.
Data Space - Internal SRAM and external SRAM.
I/O Space - Programmable logic IC, ADSIC, and the
UART.
Description
8 kHz interrupt for speaker DAC and microphone ADC from ADSIC
125 kHz signal from ADSIC
2 kHz timer interrupt from the Controller on
the Keypad Board.
Interrupt from the UART
Not used
Connector J2 allows connection to an emulator
for debugging purposes. The emulator connects to
some dedicated pins on the DSP.
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CIRCUIT DESCRIPTION
DIGITAL BOARD (CONT’D)
Program Space
Internal Map
ps_map = 1
ps_map = 0
On-chip ROM (MP/MC = 0)
external (MP/MC = 1)
$7FF
$800
On-chip SRAM (RAM = 1)
external (RAM = 0)
$2BFF
$2C00
External SRAM
(pages 0 and 1)
External Flash
(pages 0-7)
external
$FBFF
$FE00
On-Chip SRAM (CNF=1)
external (CNF=0)
Data Space
Internal Map
I/O Space
External Map
mmregs
$5F
$60
On-Chip SRAM
$7F
$80
reserved
$FF
$100
On-Chip SRAM (CNF=0)
$2FF
$300
On-Chip SRAM
$4FF
$500
reserved
UART control/status regs
$0FFF
$1000
unused
External SRAM
(pages 0 and 1)
Note: same sram in data
space is also mapped to
program space
$7FF
$800
$7FFF
$8000
flash page reg (r/w)
$8FFF
$9000
mem control reg (r/w)
$9FFF
$A000
i2c interface reg (r/w)
On-Chip SRAM (OVLY = 1)
external (OVLY = 0)
$AFFF
$B000
unused
$DFFF
$E000
$2BFF
$2C00
external
ADSIC registers (r/w)
Figure 4-3 Memory Utilization
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Part No. 001-5100-001

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File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.3
Linearized                      : No
Modify Date                     : 2002:01:14 15:21:58-05:00
Create Date                     : 2002:01:14 15:21:30-05:00
Producer                        : Acrobat Distiller 4.05 for Windows
Page Count                      : 29
EXIF Metadata provided by EXIF.tools
FCC ID Filing: ATH2425110

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