TK-931 Service Manual Addendum
Contents
1. i OTHER SELECTABLE GROUP IDs All Group IDs other than the currently Selected ID These are decodable only when a Group Scan enabled amp the Mic is On hook b Group Scan enabled amp System Scan is in progress whether by regular Scan or Interval Scan BLOCK IDs RIC BLOCK IDs optional Any Group ID used for interconnect must be included in this block range Generally there is only one RIC ID programmed per mobile Any encode Group ID selected or Group ID decoded within this block will cause the mobile to function in the telephone interconnect mode RECEIVE BLOCK IDs optional Any ID code within this range will be decoded This feature is not generally used unless a group of ID s are to be monitored It is NOT necessary to program the mobiles Group IDs here TX INHIBIT BLOCK IDs optional Decoding an ID within this block inhibits the mobiles transmit ter during decoding and for a 5 second period after The post 5 second inhibit period does not start to decre ment until the mobile stops decoding the Tx Inhibit ID If PTT is pressed during inhibit the Busy indicator lights and Busy Tone will sound continuosly unless PTT is released or the post 5 second inhibit period expires Tx Inhibit IDs are programmed in mobiles to prevent them from accessing the system when these IDs are using the system When Tx Inhibit IDs are decoded the mobiles microprocessor only inhibits trans mission Decoding a Tx Inhibit ID does n2. secs interval After transmitting 1 5 secs interval Operational Notes i Interval scan is disabled while the mic is on hook Regular scan the takes place ii After receiving a call if the PTT is pressed before scan resumes then the currently diplayed calling system group will be the one the radio responds on lf the PTT is pressed after scanning resumes then the revert system group will be the response sys grp see Off hook Revert Last Call or Last Use This is the same as regular scan operation iii Group Scan is also enabled during Interval Scan just as with on hook regular scan since the mic hook condition is electronically on nook CALL INDICATOR pg 7 3 5 Trunked operation As stated in the manual selectable Group IDs and Fixed IDs can be programmed for call indicator operation upon decode Y N in CAL column The call indicator flashes upon decoding selectable ID s and it lights continuously upon decoding Fixed ID s This visual difference indicates the type of ID decoded Each time an ID is decoded and the call ind is enabled for that ID the indicator will change to a flashing or continuous state according to it s type Decoding ID s that have the call indicator disabled will not extinguish an already lit call indication Additional Notes i The call indicator lights according to the above decode situations However the LCD system group no s shown during receive will not always indicate the act
3. TK 930 930 HD service manual part no B51 8085 00 TK 93 1 931 HD service manual part no B51 8086 00 Service Manual Addendum Due to the operational software improvements made in these radios after the printing of the above service manuals the following features have been added or altered with respect to the original manual text Features listed under Additional Information are expanded on here for clarification purposes Added Feature Pie piei toy a r eee geet iioa See eee ee eee eee oot to ETTORE OE ERR UTERO Un SU EU EO eee ene eRe ee ESOS See ae at ans oe rae mtn TaT tatata nt nna ae OC na eaer rane asenne nor aeron tate ase aan AAA COE AAEE E AAAA OAO EEEE E E CAA A AAAA EAA A ACCESS TONE When enabled this feature sounds a short beep tone at the time system access is made on a trunking dispatch call If the system is busy no busy tone will sound but if PTT is held continuously the intercept tone will eventually sound Access Tone provides an audible indication to the user that repeater access handshake is complete and speaking can begin It is also an alternative to the annoyance of getting repeated Busy Tones on a heavily congested system Note On a mobile initiated interconnect call the Access Tone will sound only on the first successful handshake with an interconnect repeater However if all interconnect repeaters are busy the busy tone will sound To enable the Access Tone 1 PLACE THE RADIO IN PROGRAM MODE Turn on the
4. e current System Group and Alphanumerics if applicable and an short beep is heard in the speaker audio
5. e period following each transmission and or reception The main purpose of this is to automatically resume scan after inordinate long intervals between transmit and receive during a two way conversation This reduces the chance of missing call on another system One practical example would be in the case that a calling mobile has been forced to manually switch to another system during a two way conversation because of out of range or busy conditions The called mobile not knowing the calling mobile has switched systems will automatically resume scan to find the new system it is being called on This relieives the called mobile from having to physically go back on hook to scan for the calling mobile and then off hook again to respond Now if both mobiles have Interval Scan enabled they will in essence search for each other among multiple systems thus making the most efficient use of the systems available to them Another advantage to Interval Scan is if the mic is left off hook inadvertently it will resume scan automatically For Interval Scan there are three programmable time extensions for the scan resume time period These prevent the mobile from resuming scan too soon as user requirements will vary Program Settings OFF disables Interval Scan and the mic MUST be on hook for system scan to operate e regular system scan 4 8 0r16 SECONDS enables Interval Scan The off hook scan resume times are After receiving a call 3
6. ot effect the decoding of other IDs receiving calls nor do they cause the mobile to open squelch light call indicator trunk out or stop system scan Therefore none of a mobiles Selectable Group Ds should be included in the Tx Inhibit Block as this would be impractical since the inhibiting action would make a two way conversation difficult If educated of the fact the mobile user can recognize that they are being locked out by a Tx Inhibit ID because only Busy Tone sounds during inhibit as opposed to Busy Tone and Intercept Tone during busy or out of range conditions Note If Access Tone is enabled then Busy tone is disable the LCD Busy Indicator is the only inhibit indica tion In this case SYSTEM SEARCH pg 8 3 13 This feature is dealer enablea in programming and user activated via the the Scan button When the Intercept Tone sounds because of busy or out of range conditions this feature can be activated by keeping the PTT depressed while momentarily pressing the Scan button and then releasing PTT This feature can be activated in or out of System Scan If activated during System Scan System Scan is terminated at the time of activation If the selected or revert group ID at search initiation was a dispatch ID the mobile attempts to access successive systems that have that group number also pro grammed as a dispatch ID This same action is followed for RIC IDs At each access attempt the LCD changes to show th
7. power while at the same time depressing the Auxillary button Keep the Aux button held for 3 seconds then release 2 PUSH THE SYSTEM BUTTON UP ONCE WAIT 1 SECOND FOR THE DISPLAY TO CHANGE The revert system group will appear 3 TURN OFF THE POWER Access Tone is now enabled To disable the Access Tone Repeat the above steps except in step 2 push the system button down once This 3 step process reduces the chance that an end user will enable or disable the Access Tone accciden tally Additional Information OFF HOOK REVERT pg 7 3 3 This is a System Scan function which allows the mobile to be programmed to revert to the Last Used or Last Call system group when the mic is taken off hook during system scan Definitions Last Call refers to the last system group a call was received on before scan resumed Last Used refers to the last system group a call was transmitted on or selected before scan was resumed Additional Notes i Manually selecting a system group at anytime will set the revert system group in both cases ll Going off hook while scan is stopped during receive or the scan resume time period will hold the radio on the currently displayed system group Unless Interval Scan is enabled and activates INTERVAL SCAN pg 7 3 4 Enabled through dealer programming During System Scan and while the mic is off hook this feature will automatically resume system scan within a programmed tim
8. ual calling party since it is a function of Group Scan programming and mic hook condition see Group Scan pg 7 3 9 ii The call indicator resets when the mic is taken off hook or placed on hook or if PTT or any front panel button is pressed PRIORITY ID CODES pg 7 3 8 Errata PRIORITY OF ID CODES 1 Fixed ID 1 2 Fixed ID 2 3 Selected Group ID 4 Other Selectable Group Ds 5 Block Decode IDs RIC Transmit Inhibit Receive All IDs are given a hierchal order of priority as in the list above All the programmed Fixed Selected amp Block IDs within each system are ALWAYS decodable regardless of System Scan Group Scan or on off hook conditions While the mobile is receiving it s home channel of a particular system it will trunk to the higher priority ID call even if it is currently listening to a lower priority ID call FIXED IDs 1 amp 2 optional Are for example programmed in groups of fleet mobiles so that a base station or supervisory mobile can interrupt ongoing fleet calls for priority communications However fleetmobiles that are trunked out from their home channel will not receive the Fixed ID until they return to the systems home channel GROUP IDs A minimum of one Group ID must be programmed for the System to be valid i SELECTED GROUP ID The last selected ID via the front panel Group buttons or via the Off hook Revert programming Last Call or LastUsed Often referred to as the Revert Group
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