LTR4-512 LTR8-512 LTR8-512M Master Clock Installation & User's Guide
Lathem, the Lathem logo, LTR4-512, LTR8-512, LTR8-512M, Radio Sync, LTR MasterLink, Terminal Manager and PayClock are registered trademarks of Lathem Time Corporation. Other product names mentioned in this manual may be trademarks of their respective companies and are hereby acknowledged. WARNING: Changes or modifications to this product not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
Table of Contents Welcome..........................................................................................................1 Step 1 - Mounting the Master.................................................................................2 SURFACE MOUNT....................................................................................................2 SEMI-FLUSH MOUNT ................................................................................................3 RACK MOUNT ...........................
LTRx-512 Installation and User’s Guide Welcome Thank you for purchasing your new MASTER CLOCK. You can use your new Master to ring bells or turn on circuits for up to 99 seconds, as well as to synchronize the time on secondary wall clocks or devices.
LTRx-512 Installation and User’s Guide Step 1 - Mounting the Master The Master comes ready to surface mount on the wall. However, you can also install the Master in a standard 19" rack, recess the power supply into the wall or hide the power supply in the floor or ceiling and hang only the display unit on the wall with optional hardware. A qualified electrician who understands the electrical code in your area should install your Master.
LTRx-512 Installation and User’s Guide To surface mount the Master 1. Place the Master on its back with the display unit facing up and the keypad to the right 2. Remove the two screws from just above the display unit 3. Lift the display unit up and away from you. Note that two rivets at the bottom of the cover prevent you from lifting it straight up 4. Unplug the ribbon power cable from the back of the display unit 5. Set the display unit aside 6.
LTRx-512 Installation and User’s Guide Lowering the Display Unit during Testing With a Semi-Flush or Surface mount, you can hang the display unit below the back box when testing the Master and its circuits. To lower the display unit, remove the two screws that attach the display unit to the back box. Lift the unit up and away from the back box, leaving the ribbon cable plugged in.
LTRx-512 Installation and User’s Guide Rack Mount The LTR8-512 and LTR8-512M come with two L-shaped brackets (optional on the LTR4-512) so you can install your Master in a standard 19-inch rack Power Supply Box Brackets Display Unit To install the Master in a 19-inch rack 1. Place the Master on its back with the display unit facing up and the keypad to the right 2. Remove the two screws from just above the display unit 3. Lift the display unit up and away from you.
LTRx-512 Installation and User’s Guide 10. 11. 12. 13. 14. 15.
LTRx-512 Installation and User’s Guide Attach the ground wire to one of the lower power supply mounting screws Note: UL regulations require that you do NOT place high voltage (120V) and low voltage communication cables in the same conduit or through the same knockout holes • • • • • • • Follow the wiring steps in step 2 For the cleanest installation, mount the display unit over a standard “double gang” 4-inch electrical box Route the other end of the 8-foot connection cable to this electrical box Place t
LTRx-512 Installation and User’s Guide Step 2 – Wiring the Master Wire the display panel and power relay units for bell control and clock synchronization. Refer to the diagrams in Appendix C2 for more details. Until you complete this part of the wiring, do not turn on the AC power to P4, and keep the power/relay unit’s toggle switch turned “OFF” (Note: The LTR4-512 does not contain Terminal Block P3) Power Supply – LTR8 TERMINAL BLOCK ‘P4’ WIRING THE LTR8-512 FOR 120VAC (nom.
LTRx-512 Installation and User’s Guide Power Supply – LTR4 TERMINAL BLOCK ‘P4’ WIRING THE LTR8-512 FOR 120VAC (nom.) OPERATION J1 installed between 3 & 4 and J2 installed between 5 & 6 TERMINAL BLOCK ‘P4’ WIRING THE LTR8-512 FOR 220/240VAC (nom.) OPERATION J1 installed between 4 & 5 Your Master is already setup for 120VAC operation. If you need to wire it for 220/240VAC, change the jumper settings as shown in the drawings on page 8.
LTRx-512 Installation and User’s Guide We recommend using stranded wire inside the Power Supply Box. Stranded wire allows for a firm connection to the Quick Connect terminals. Stranded wires are also less likely to interfere with the relay board components.
LTRx-512 Installation and User’s Guide Step 3 – Setting Up the Master If you will use the Master to sync clocks, you must first use relays #7 & #8 (terminal block P1) for synching.
LTRx-512 Installation and User’s Guide To set the date and time, select Function [1] by keying [#][1][#] Enter the numbers for the month, date and year (4-digit year), then press [#], such as [0][4][0][3][2][0][0][3][#] shown below: ENT.DATE: 04-03-2003 ENTER DAY-OF-WEEK: D 1=SUNDAY..
LTRx-512 Installation and User’s Guide If you enter a time less than 13:00 (1:00 PM), then you will see SELECT [0]PM / [1]AM Press [0] for PM or [1] for AM. If you choose ‘PM’, then the time will display in 24-hour format to confirm your entry ENT.DATE: 04-03-2003 TODAY IS THURSDAY ENTER TIME: 21:00 PRESS [#] IF CORRECT Press the [#] key at the top (‘00’ seconds) of the new minute to accept. If the time or date is incorrect, press [*] to cancel and try again.
LTRx-512 Installation and User’s Guide 3D - Choose Clock Types If you will use the Master to synchronize electro-mechanical wall clocks (analog or digital), then use Function [2] to choose the clock type for Clock #1 and/or Clock #2, following the instructions below. Clock Control Codes can be found in Appendix C1.
LTRx-512 Installation and User’s Guide 3E - Test Bell Circuits Manual Bell Control Use Manual Bell Control Function [3] (described on Pg. 20 to test selected bell circuits. Press [#][3][#] to start this function MANUAL BELL CONTROLS 1-2-3-4-5-6-7-8 PRESS AND HOLD [#] TO EXECUTE. [*]TO END Auto Test the Bells Use the Auto Bell Test feature to turn on all bell relays once per minute at the start of each minute. Once you start this function, you can test the continuity of your bell wiring circuits.
LTRx-512 Installation and User’s Guide 3G – Setup Communication The “factory default” communication settings (LTR8-512 and LTR8-512M only) are: Baud Rate: Terminal ID#: 9600 065 Use Function [B] (described on Pg. 30) if you if you need to change these settings for MasterLink configurations involving multiple Masters, You can setup your LTR8-512 with LTR MasterLink using RS-232 (serial), RS-485 (networked), Modem (remote), or Ethernet (requires TXTOSER accessory) Communications.
LTRx-512 Installation and User’s Guide Additional Functions: All of the Master’s functions are described in the next section of this guide. Remaining steps, which may be performed “as needed” by the Installer or User, include the following: Function Number 0 1 3 4 5 8 9 A C Programming Operation .
LTRx-512 Installation and User’s Guide Function Descriptions [#] [*] Starts the Programming Functions and Confirms Entries Ends Program functions and/or Cancels Entries (except the “Quick Check”) Quick Check Commands Quick Check commands display system information for about 2 seconds. You can press any of the three “corner quick check keys” ([*], [1] or [3]) when the Master is in Clock Mode. Quick Check Command [*] Status Any time you see the time and date, you can press [*] to see the Master status.
LTRx-512 Installation and User’s Guide [0] = Password You must enter a password for most programming functions. To enter your password, press [#][0][#] Enter your 6-digit password, then press [#] Once you enter your password, you can now program your Master until it detects that you haven’t pressed a key for 5 minutes. After that, you must re-enter your password to keep programming The administrator password 332537 [DEALER] allows you to access advanced functions.
LTRx-512 Installation and User’s Guide Once you press [#], enter the time of the next upcoming minute, using either 12-hour or 24-hour format, then press [#]. (If using 24-hour format, enter midnight as 00:00) For example, if the current time is 08:59, enter: 09:00 ENT.DATE: 04-03-2003 TODAY IS THURSDAY ENTER TIME: 09:00 SELECT [0]PM / [1]AM If you enter a time less than 13:00 (1:00 PM), then you will see SELECT [0]PM / [1]AM Press [0] for PM or [1] for AM.
LTRx-512 Installation and User’s Guide [2]=Select Clock Control This function requires the administrator password Use this function to choose the make/model of the clocks that your Master will synchronize (Note: The LTR4-512 can only synchronize one type of secondary system) Enter your administrator password, then start this function by pressing [#][2][#] ENABLE CLOCK CIRCUIT SELECT CLK1 CODE: NN [#] FOR CODE LIST Enter the 2-digit code for CLOCK1, then press [#].
LTRx-512 Installation and User’s Guide Press [0] to turn them all off, or press keys [1] - [8] to turn a circuit off or on When you see the circuits that you want to ring, press and hold the [#] key. The front panel lights will light up to show that you have turned on those relays. Release the [#] key to turn those relays back off.
LTRx-512 Installation and User’s Guide The following will show on the display: For Firmware version 4.05 and earlier: For Firmware version 4.06 and later: To select the appropriate mode: Press [1] DATA ENTRY to create a new schedule Press [2] DATA SCAN to view a schedule Press [3] DATA EDIT to change a schedule Press [4] CLEAR to clear all records in the selected schedule When you choose [2] DATA SCAN, you can view events.
LTRx-512 Installation and User’s Guide Then select the days when this event occurs [0] selects no days, [1]-[7] selects Sunday-Saturday, [8] selects holidays and [9] selects all days (including holidays). Press these keys to turn days on or off.
LTRx-512 Installation and User’s Guide [5]=Schedule Changes (Use the handy programming charts included at the end of this Guide) If you wish to activate schedules at a future date, use Schedule Changes to program a schedule’s start date and time. This function works much like the Bell Schedule Function [4].
LTRx-512 Installation and User’s Guide [6]=Enable or Disable Circuits This function requires the administrator password. Use this function to Enable and Disable your Master’s control relays during circuit wiring or maintenance. This function can also ‘hold back’ clocks to manually adjust for daylight savings in the fall if you have chosen not to use Function 7 “Daylight Savings”. [7]=Daylight Savings This function requires the administrator password.
LTRx-512 Installation and User’s Guide [9]=Sync Clocks Use this function to quickly sync any secondary clocks that lose time. This can occur if power to your LTRx-512 stayed on while power to the secondary clocks stopped. Note: This function is primarily used during initial installation of the secondary system, if there has been maintenance of the system requiring the power to be turned off, or other special circumstance.
LTRx-512 Installation and User’s Guide [A]=Program Holidays You can enter up to 16 dates as holidays in your LTRx-512. During holidays, only the events that you set to occur on holidays will turn on when they reach the scheduled time.
LTRx-512 Installation and User’s Guide [B]=Communications (LTR8-512 and LTR8-512M Only) This function requires the administrator password Use this function if you use LTR MasterLink or Terminal Manager software with your LTR8-512 You cannot choose function [B] directly.
LTRx-512 Installation and User’s Guide Daylight Savings Codes APPENDIX A - SPECIFICATIONS ELECTRICAL: Input Voltage 120 or 220 / 240 VAC @ 60Hz or 50Hz Input Power 50 VA max (less than 0.5A @ 120V) Memory / Quartz Time Backup 10 year (nom.) Lithium Battery Bell / Clock Control Relays 120VAC / 28VDC, 10A , Pluggable Fuse 1 x 1.0 Amp Main (AGC1) MECHANICAL / ENVIRONMENTAL: Operating Temperature Weight Dimensions Mounting Options 32°-115° F (0°-46° C) About 12 lb.
LTRx-512 Installation and User’s Guide Daylight Savings Codes APPENDIX B – DAYLIGHT SAVINGS COUNTRY CODES ALBANIA ANDORRA ARMENIA AUSTRIA AZERBJAN AZORES BAHAMAS BALEARIC ISLANDS BELARUS BELGIUM BERMUDA BOSNIA/HERCGVENA BRAZIL BULGARIA CANADA CHANNEL ISLANDS CHILE CROATIA CUBA CYPRUS CZECH REP DENMARK EASTER ISLAND EGYPT 02 02 02 02 02 02 08 02 02 02 08 02 13 02 08 01 12 02 06 02 02 02 02 09 ENGLAND ESTONIA FALKLAND ISLANDS FINLAND FRANCE GERMANY GIBRALTER GREECE GREENLAND HAITI HUNGARY IRAN IRAQ IRELAND
LTRx-512 Installation and User’s Guide Secondary Clock Types APPENDIX C1 - SECONDARY CLOCK TYPE CODES Type Description Page Type Description Page 01 SYNCHRONOUS WIRED 33 03 STANDARD EL SYNCH 36 01 LATHEM TYPE SS 33 03 AMR T&S X55BHGA801 35 01 CINCINNATI D10 33 04 STANDARD TM AR-2A 37 01 IBM 77 SERIES 33 05 3W MIN IMPULSE/58 37 01 SIMPLEX 77 SER 33 06 SYNCHRONOUS WIRED 38 01 SIMPLEX 93-9 33 06 CINCINNATI D8 38 01 SIMPLEX 91-9 33 06 FARADAY 38 HONEYWELL ST402A
LTRx-512 Installation and User’s Guide Wiring Diagrams APPENDIX C2 - WIRING SECONDARY CLOCKS TYPE 01 - SYNCHRONOUS WIRED TYPES INCLUDE: Lathem Type SS Wall Clocks Cincinnati D10 (115VAC), D12 (24VAC) IBM 77 Series Simplex 77 Series, 93-9, 91-9, 941-9, 943-9, 6310-9231 Stromberg 3000 All circuits should be fused or protected by a circuit breaker (10Amp maximum) 33
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 02 - THREE WIRE MINUTE IMPULSE (59TH MIN.
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 02 - TWO WIRE REVERSE POLARITY MINUTE IMPULSE (59 TH MIN.) TYPES INCLUDE: Lathem Type ISC (2-Wire) Cincinnati D3 Using PS8-2412 Power Supply: Using PS8-24 Power Supply: * Green and Black Wires in Clock Cable are unused.
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 03 - STANDARD ELECTRIC SYNCHRONOUS (*Old Style: Dual Motor) AMERICAN TIME & SIGNAL #X55BHGA801 All circuits should be fused or protected by a circuit breaker (10Amp maximum) Note: For New Style (Motor+Solenoid), see Type 06 (Faraday) 36
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 04 - STANDARD ELECTRIC TIME AR-2A TWO WIRE DUAL VOLTAGE All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 05 - THREE WIRE MINUTE IMPULSE (58TH MIN.
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 06 - SYNCHRONOUS WIRED TYPES INCLUDE: Cincinnati D8 Faraday (New Style: Motor + Solenoid) Honeywell ST402A All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 07 - DUKANE 24F200 DIGITAL CLOCKS NOTE: THIS SELECTION IS NOT SUPPORTED ON THE LATHEM LTR8-512 OR LTR4-512 SERIES. CORRECTION FOR DUKANE 24F200 DIGITAL CLOCKS IS AVAILABLE ON THE DUKANE 24A715 SERIES MASTER CONTROL WITH SOLID-STATE RELAYS.
LTRx-512 Installation and User’s Guide Wiring Diagrams 115VAC TYPE All circuits should be fused or protected by a circuit breaker (10Amp maximum) 24VAC TYPE All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 09 - SIMPLEX 59TH MINUTE DUAL MOTOR TYPE 10 - SIMPLEX 45TH MINUTE DUAL MOTOR TYPE 27 - SIMPLEX 2310 DUAL MOTOR Same hourly corrections as Type 09, but with addition of 12-hour corrections, as for Type 03.
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 11 - EDWARDS DUAL MOTOR All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 12 - CINCINNATI ‘D6’ CLOCKS All circuits should be fused or protected by a circuit breaker (10Amp maximum) 40
LTRx-512 Installation and User’s Guide Wiring Diagrams Type 14 - ELECTRONIC CODED CLOCKS Clocks run normally with 120 VAC power. For any bells or clock correction, the generator prestart relay (SK1) first turns on for the signal-generator to reach frequency. SK1 turns on at the 00 second after a programmed time or manual bell time. Then relay SK2 turns on for 3 seconds, from the 10th to the 13th second, to apply the generator signal (coded cup start signal) onto the 120 VAC.
LTRx-512 Installation and User’s Guide Wiring Diagrams Clock correction and bell circuit operations are generated by sequentially applying various frequencies onto the 120 VAC. Each bell and clock correction circuit has its own frequency. Each bell and clock correction circuit has a receiver circuit that applies the associated bell or clock frequency (3510 Hz normally used for clock signals). For daylight savings, the clocks advance to the proper time by normal 12-hour correction, not at 2:00 AM.
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 16 - THREE WIRE MINUTE IMPULSE (59 MIN) WITH 12-HOUR CORRECTION TYPES INCLUDE: Simplex 91 and 941 SAME WIRING AS FOR TYPE 02 (3-WIRE) TYPE 16 - TWO WIRE REVERSE POLARITY MINUTE IMPULSE (59 MIN) WITH 12-HOUR CORRECTION SAME WIRING AS FOR TYPE 02 (2-WIRE) __________________________________________________________________________________ TYPE 17 - STANDARD ELECTRIC TIME AR-2 TWO WIRE DUAL VOLTAGE 24 V All circuits should be fused or protected
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 18 - NATIONAL SYNCHRONOUS WIRED TYPES INCLUDE: Dukane 240 Series Rauland 2463 Series All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 19 - STROMBERG SYNCHRONOUS WIRED TYPES INCLUDE: Stromberg Synchronous Lathem Type SS Wall Clocks (modified) NOTE: Lathem type SS wall clocks can run according to the above signal operation if modified to reference the minute and second hands to HH:57:16 (versus HH:59:00) and
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 20 - THREE WIRE MINUTE IMPULSE (44 TH MIN.
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 22 - DUKANE SYNCHRONOUS WIRED All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 23 - CONDOR DIGITAL CLOCKS (Model 2412) TYPES INCLUDE: Condor 2412 If the digital clocks lose sync with the LTRx-512, then you can use function [9]=SYNC CLOCKS to re-sync them.
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 23 - RAULAND DIGITAL CLOCKS (Model 2422) TYPES INCLUDE: Rauland 2422 If the digital clocks lose sync with the LTRx-512, then you can use function [9]=SYNC CLOCKS to re-sync them.
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 23 - CONDOR DIGITAL CLOCKS (BAR-AC-4412) If the digital clocks lose sync with the LTRx-512, then you can use function [9]=SYNC CLOCKS to re-sync them.
LTRx-512 Installation and User’s Guide Wiring Diagrams TYPE 24 - EDWARDS SYNCHRONOUS WIRED CLOCKS - TYPE E1 All circuits should be fused or protected by a circuit breaker (10Amp maximum) 49
LTRx-512 Installation and User’s Guide Wiring Diagrams APPENDIX D - WIRING DIAGRAMS: POWER, BELLS, ETC. Fig. D1 - TERMINAL BLOCK ‘P4’ WIRING THE LTRx-512 FOR 120VAC (nom.) OPERATION All circuits should be fused or protected by a circuit breaker (10Amp maximum) WIRING THE LTRx-512 FOR 220/240VAC (nom.
LTRx-512 Installation and User’s Guide Wiring Diagrams Fig.
LTRx-512 Installation and User’s Guide Wiring Diagrams Fig. D3 - COMPUTER CABLE (For Front Access Port) (LTR8-512 and LTR8-512M Only) Fig.
LTRx-512 Installation and User’s Guide Wiring Diagrams Fig.
LTRx-512 Installation and User’s Guide Wiring Diagrams Fig. D7 – COMMUNICATION TERMINAL BLOCK Rear of Display Unit NOTES: 1. Twisted-pair (Cat-3/Cat-5) wire connects directly to Terminal Block; up to 2 wires per position 2. Pulse-sync input is same as provided in power supply. One (1) second (min.) dry-contact switch closure across terminals causes Master to reset time to 12:00AM of nearest date 3. Grounds (GND) are “signal grounds”, not “chassis grounds” 4.
LTRx-512 Installation and User’s Guide Wiring Diagrams RS-485 Sync Time Device Connection • Sync In: Terminal block pair used to receive RS-485 synchronization from another Lathem Master product or radio sync device, or transmit the LTRx-512’s own sync commands to up to 31 RS-485 devices, including Lathem Masters and DDC4R Wall Clocks • Sync Out: Terminal block pair used to buffer and repeat a received RS-485 sync signal, or transmit the LTRx-512’s own synchronization commands to up to an additional 31 R
LTRx-512 Installation and User’s Guide Wiring Diagrams Fig. D8 - POWER SUPPLY TERMINAL BLOCKS NOTES: 1. Circuits CKT1...CKT4 designate bell controls. Circuit pairs CKT5/CKT6 and CKT7/CKT8 can function as clock synchronization circuits or as bell controls (Note: CKT1…CKT4 do not exist on the LTR4-512. Instead use CKT5…CKT8 which are indicated related to the LEDs on the Display Unit numbered 1-4). 2. MOV’s (Metal-Oxide Varistors) protect all relay contacts 3.
LTRx-512 Installation and User’s Guide Installing the Modem APPENDIX E – INSTALL THE OPTIONAL MODEM Installation of the optional internal modem should be performed by a trained and competent electronics technician. Follow these steps; 1. Turn off the power to the Master Clock. You can either access the on/off switch inside the Power Supply Box or turn off the power at the source. 2. Remove the four (4) screws from the sides of the Display Unit. 3. Gently remove the cover of the Display Unit.
LTRx-512 Installation and User’s Guide Connecting the LTR-GPS Satellite Receiver/Synchronizer APPENDIX F – Connecting the LTR-GPS Satellite Receiver / Synchronizer Lathem’s LTR-GPS is a Global Positioning Satellite receiver using 12-channels to access the accurate date and time signal transmitted each second by 24 satellites in geosynchronous orbit around the globe. The package includes an amplified GPS Antenna, which must be mounted out-doors or beneath a roof skylight, facing skyward.
LTRx-512 Installation and User’s Guide Power Supply Schematics APPENDIX G – POWER SUPPLY SCHEMATICS LTR8-512 / LTR8-512M LTR4-512 (C) 2000 LATHEM TIME CORP. VMM7086 REV. D C5 D12 K7 K8 K6 D4 D3 D5 D6 K5 K6 K7 D6 D5 D4 D3 K8 59 K5 D11 D10 D9 D12 D11 D10 D9 K4 K3 C3 C3 K2 C4 C4 C5 K1 (C) 2000 LATHEM TIME CORP. VMM7086 REV.
LTRx-512 Installation and User’s Guide Programming Charts BELL SCHEDULE PROGRAMMING CHART SCHEDULE #: 1 2 3 4 5 6 7 8 REC No. Ex. DAYS SMSTWTFSH MTWTF CIRCUITS 12345678 1234 (Circle One) START HH:MM 08:00 DUR SS 5 DATE:____-____-____ REC No. Ex.
LTRx-512 Installation and User’s Guide Programming Charts SCHEDULE CHANGE DATES PROGRAMMING CHART DATE:____-____-____ REC NO. MM Ex.
LTRx-512 Installation and User’s Guide Programming Charts HOLIDAYS SETUP CHART DATE:____-____-____ RECORD NO. Ex.
LTRx-512 Installation and User’s Guide FOR UNITS EQUIPPED WITH AN INTERNAL MODEM NOTICE: This equipment complies with Part 68 of the FCC Rules. On the mounting panel of this equipment is a label that contains, among other information, the FCC Registration Number and Ringer Equivalence Number (REN) for this equipment. If requested, provide this information to your Telephone Company. The registration jack USOC for this equipment is (RJ-11).
LTRx-512 Installation and User’s Guide Limited One-Year Limited Warranty Lathem warrants the hardware products described in this guide against defects in material and workmanship for a period of one year from date of original purchase from Lathem or from an authorized Lathem reseller. The conditions of this warranty and the extent of the responsibility of Lathem Time Corporation (“Lathem”) under this warranty are listed below. 1.
LTRx-512 Installation and User’s Guide Index A Administrator password ..........................11, 19 Auto Bell Test ......................................15, 22 B Baud rate ............................................... 29 Baud Rate ............................................... 18 Bell schedules .......................................... 22 Bell zones ............................................... 11 Bell Zones ............................................... 60 C Change Password ....................
