RACOM 2816P User manual

RACOM 2816
Dialed Digit Printer
Model 2816P
Instruction Manual
5504 State Road • Cleveland, OH 44134-7330 • [phone]
1-800-722-6664 • FAX [phone]
PRODUCTS INCORPORATED

1/27/95
DUAL LOCK CODES or PASSWORDS (SP3)
ForRACOM Models
2816P - Dialed Number Recorder and
2816 - Multiline Dialed Digit Printer
This option adds two levels of locks or password protection to
RACOM1s Dialed Number Recorders (DNRs). Lock Code One gives
full access to all the functions of the DNR, including audio
monitoring and recording. Lock Code Two allows the DNR to print
telephone numbers but not monitor or record audio. Both lock
codes are field programmable.
Locking The Unit:
To locked the unit hit the "F" key and then the "B" key on the
keyboard.
Unlock The Unit:
To unlock the unit, enter the 5 digit unlock code and then hit
the "C" key on the keyboard.
Default Lock Codes:
When the unit is shipped from RACOM, Lock Code One is "12345".
This code gives full access to all features of the unit. The
second lock code is "45678". This code enables telephone number
printing but not audio monitoring or recording.
LOCK and UNLOCK SUMMARY:
LOCK by hitting the "F" and "B" keys.
UNLOCK by entering the 5 digit code and hitting the "C" key.
UNLOCK CODE "12345" gives full access.
UNLOCK CODE "45678" enables number printing only.
CHANGING THE LOCK CODES:
The lock codes may be changed by hitting the "4" key while in the
setup menu. This will give a special lock code change display
that will allow new lock codes to be entered. The five digit
locks codes should be entered with the numeric keys on the
keyboard. The "A" and "B" keys may be used to move the cursor
left and right. After the codes are entered, hit the "E" key to
accept them or the "C" key to cancel them. Be sure to hit the
"7" key on the setup display so that the new lock codes are
permanently saved in the unit. The unit must have been enabled
with Lock Code One to have access to this feature.

EFFECTIVE 8/91
REPLACEMENT ORDER INFORMATION
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WRITE TO: RACBM PRODUCTS INC.
PARTS DEPT.
5504 STATE/ RD
CLEVELAND; OH 44134
USA
[phone]
[phone] FAX LINE
************************************
PARTS FOR RACOM 2816, 2816C, 2816P DIALED DIGIT PRINTERS
P R I N T E R R I B B O N ( E P S O N R I B B O N B L A C K ) $ 2 0 . 0 0
PRINTER PAPER (3"ROLLS) QUANTITY OF SIX ROLLS.$26.00
EPSON PRINTER MEOIANISM. .. (EPSON M260) $210.00
LCD DISPLAY $95.00
K E Y P A D & W I R I N G A S S E M B L Y $ 6 4 . 0 0
ALL PRICES ARE IN UNITED STATES DOLLARS
PRICES ARE SUBJECT TO CHANGE WITHOUT NOTICE
PRICES INCLUDE SHIPPING TO DOMESTIC ADDRESSES ONLY
INTERNATIONAL ORDERS ARE F.O.B. CLEVELAND/ OHIO U.S.A.
PARTS ORDERS ARE TO BE PAID IN FULL PRIOR TO SHIPMENT
UNLESS PRIOR ARRANGEMENTS ARE MADE
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NOTICE
WARNING: This equipment generates, uses and can radiate radio frequency energy
and If not installed and used in accordance with the instruction manual, may
cause interference to radio communications. It has been tested and found to
comply with the limits for a Class A computing device pursuant to Subpart J of
Part 15 of FCC Rules, which are designed to provide reasonable protection against
such interference when operated In a commercial environment. Operation of this
equipment in a residential area may cause interference in which case the user at
his own expense will be required to take whatever measures may be required to
correct the Interference.
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RACOH PRODUCTS INC,
5504 STATE ROAD
CLEVELAND, OB 44134
EXHIBIT J
This equipment complies with Part 68 of the PCC rules. The label affixed to
this equipment contains, among other information/ the PCC Registration Number
and Ringer Equivalence Number (REN) for this equipment. You mist, upon request/
provide this information to your telephone company.
The REN is useful to determine the quantity of devices you may connect to your
telephone line and still have all of those devices ring when your telephone
nunber is called. In most, but not all areas, the sum of the REN's of all
devices connected to one line should not exceed five (5.0). To be certain of
the nunber of devices you may connect to your line, as determined by the REN,
you should contact your local telephone comnpany to determine the mpirimim REN
for your calling area.
The following jacks must be ordered from the telephone company in order to
interconnect this product with the public comxunication network: RJ11 or RJ14 or
RJ21.
If your telephone equipment causes harm to the telephone network/ the Telephone
Conpany may discontinue your service temporarily. If possible, they will notify
you in advance. But if advance notice is not practical you will be notified as
soon as possible. You will be informed of your right to file a complaint with
the FCC.
Your telephone company may make changes in its facilities, equipment, operations
or procedures that could affect the proper functioning of your equipment. If
they do, you will be notified in advance to give you an opportunity to maintain
uninterrupted telephone service.
If you have trouble with this equipment/ please contact us at the address above
for information on obtaining service or repairs. The telephone company may *ffk
that you disconnect this equpment from the network until the problem has been
corrected or until you are sure that the equipment is not malfunctioning.
This product is not field repairable. However, the maintenance section of this
manual describes trouble-shooting steps which one can take in the event of
equipment problems.
This equipment may not be used on coin service lines provided by the telephone
company.
Connections to party lines are subject to state tariffs. Contact your local
telephone company if you plan to use this equipment on party lines.
The installation of this product does not require any connections or changes to
the internal wiring of other registered terminal equipment.
The installation of this product does not require any connections or changes
which vill affect the exterior of other roistered terminal equipment.

TABLE OF CONTENTS FOR THE RACOM 2816P
PAGE
SECTION ONE
Functional Description 1
S p e c i fi c a t i o n s 2
Operation 3
Installation 4
F r o n t P a n e l S w i t c h e s a n d I n d i c a t o r s 5
Led Display 5
L e d s 5
Keyboard 6
S e t t i n g t h e E l e c t r o n i c C l o c k 7
Recording and Audio Monitoring .8
L o o p E x t e n d e r R e c e i v e r 8
Caller Number Delivery 9
Inked Ribbon Replacement 9
Paper Tape Replacement 9
SECTION TWO
Configuration 10
I n t e r n a l S w i t c h e s a n d C o n t r o l s 1 0
A c c e s s t o I n t e r n a l S w i t c h e s a n d C o n t r o l s 1 0 '
Double or Single Space 10
Touch Tone and Dial Pulse Exclusion 11
P r i n t L a s t R o t a r y D i a l e d D i g i t 1 1
T o u c h T o n e A c c e p t a n c e o r D r o p o u t T i m e 1 1
R o t a r y D i a l P u l s e s T i m e o u t 1 2
Threshold Adjustment 12
Dial Pulse Rate Switch 13
Input Invert Switch 13
D. C. Input Configuration (Bridging Mode) 13
Software Setup 14
T i m e r s 1 5
Counters 16
Timing. 16
I n t e r n a l C o n t r o l s S u m m a r y 1 7
M i c r o p r o c e s s o r B o a r d 1 7
L i n e B o a r d s 1 8
S w i t c h e s 1 8
Controls 18
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- 1 -
SECTION ONE
FUNCTIONAL DESCRIPTION
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The RACOM 2816P Dialed Number Recorder evolved from the Racom 2800
and 2805 Dialed Digit Printers. The RACOM 2816P is a one line
portable version of the RACOM 2816 Multi-line Dialed Digit Printer.
The 2816P contains the latest state-of-the-art microprocessor
circuitry with plug-in circuit boards.
The RACOM 2816P Dialed Number Recorder can easily be connected to
most telephone lines by its modular connector to provide a printed
record of the following:
1. Each telephone number dialed (up to 32 digits).
2. The date and time of the call.
3. The elapsed time of the call.
4. Whether the call was made from a rotary dial or a touch
tone telephone.
5. How long an incoming call rang and if it was answered.
6. The origination date and time of the incoming calls.
7. The elapsed time of the incoming calls.
8. Control and status of a cassette recorder.
9. The number that is calling when Caller Number Deliver is
provided on the telephone line.
The 2816P has connections for two cassette recorders and a
headphone. It can be connected directly across the telephone line
or it may be used with a remote loop extender, such as the Racom
Model LP2816.
The information can also be displayed on the RACOM 2816Ps LCD
display.
The 2816P has an optional RS232 data output which can hold up to 750
calls waiting to be sent out through the RS232 data output.
Once connected properly to a telephone line, the RACOM 2816P is
fully automatic and requires a minimum amount of attention. The
only normal operating maintenance required is changing the paper and
inked ribbon.
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SPECIFICATIONS
Configuration:
Size:
Weight:
Power:
Number of Lines:
Memory Capacity:
Data Output:
Temperature:
Portable briefcase
18" Wide x 5" High x 14" Deep
16 lbs.
120 VAC 60 Hz 90 Watts
230 VAC 50 Hz 90 Watts (Option 5)
1
Up to 15 calls waiting to be printed
Similar to RS232 and 750 call buffer (optional)
0 degrees to 60 degrees C
Basic Specifications:
Digit Capacity:
DC Input (isolated
from ground)
Rotary Dial:
Touch-Tone:*
Recorder Coupler Outputs:
Audio monitor:
Remote receiver:
32
bridging
line loading - 10M Ohm
idle line voltage - 24 VDC or greater
dial pulse rate - 8 P.P.S. to 22 P.P.S.
inter digit time - 300 MS
make/break ratio - 60%
digit recognition - 40 MS (adjustable)
inter digit time - 30 MS
dropout time - 10 seconds standard
(adjustable)
sensitivity - 40 MV
input 100K Ohms bridging, DC blocked and
isolated from ground
Audio and relay contacts for two recorders
Miniature connector for headphone
Dual tone - 852Hz and 1633 Hz
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* Touch-Tone is a registered trade mark of A. T. & T.

- 3 -
OPERATION
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After the unit is in place and the proper telephone line connections
have been made, the printer is ready for normal operation. As each
call is placed, you will notice the "line active" LED lights up for
the line in use, indicating a call is in progress. While the RACOM
2816 registers all of the dialed information at the origination of
the call, it does not print the data until the call has been
terminated.
The following examples will describe four (4) common call transactions:
1. Telephone number dialed.
3 5 1 1 7 5 5 T — ? T " i n d i c a t e s t h i s c a l l
04/10/90 10:53:02 08:01 1 R originated from a touch tone
t. J u
This call originated on
April 10, 1990 at 10:53:02.
telephone.
The call was on linel and "R"
indicates that it was recorded.
2.
This call lasted for 8 minutes and 1 second.
Toll telephone number dialed.
1 3 5 1 1 7 5 5 P " P " i n d i c a t e s t h a t t h e c a l l w a s
05/01/91 11:08:58 20:09 1 0, from a rotary dial telephone.
' 1 ' \ " \
T h i s c a l l o r i g i n a t e d o n ■" 0 " i n d i c a t e s t h a t t h e a u d i o
M a y 1 , 1 9 9 1 a t 11 : 0 8 : 5 8 . r e c o r d e r w a s o f f .
This call lasted for 20 minutes and 9 seconds
on Line 1.
3.-i"\
00:34 ,08/10/89 14:04:57 t07:03 1 R,
This call was answered at 14:04:57.
4. -C
From:2163511755
,00:55t ,05/09/91 17:04:57,
This is the ring timer. The
telephone rang for 34 seconds.
This call lasted 7 minutes and 3
seconds on line 1. The recorder
was on.
This call was from 2163511755 (CND
option).
This call was not answered.
Ringing stopped at 17:04:57 on May 9, 1991.
The telephone rang for 55 seconds.
Note: 1. The RACOM 2816 will accept up to 32 digits. If more than 32
digits are entered, the first 32 digits are printed and the
"+" will appear in the 33rd column of the print out.
2. If the elapsed time of any call exceeds 99 minutes and 59
seconds, the seconds are replaced by an "M" to indicate that
the time is in minutes. The elapsed time can then go up to
9999 minutes. It will stop advancing at 9999 minutes.
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INSTALLATION
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The RACOM 2816P has a number of flaps that give access to various
parts of the unit. Flaps underneath the printing mechanism store
the power cord, RS232 cable and hold the paper roll.
Once the unit is in place, the electrical connections can be made.
For convenience, a telephone instrument connected to the same line
as the 2816 should be located nearby. The following connecting
arrangement will satisfy the majority of installations.
Connections:
1. Turn the power switch off.
2. Place the mode switch in the desired position.
3. Connect the telephone line to the modular connector.
4. Plug the 2816 into a standard 120 VAC grounded outlet.
5. Turn the power switch to the "on" position.
6. Depress On/Off Button to make the printer go on-line.
7. Refer to instructions describing how to set the electronic
clock if the time or date is wrong.
8. Lift the handset from a telephone which is connected to the
same telephone line as the printer. The "line active" LED
should light.
9. Replace the telephone handset and the printer should print
the length of time the telephone was off the hook, the day
of the month and the time of day. This information will be
printed on all calls.
10. Pick up the handset again and dial a number familiar to
you. Wait a few seconds and replace the handset. This
time, you will see two (2) lines printed. The first line
is the number you dialed and the second is the time related
information explained in the previous step. Also notice
the letter printed at the end of the dialed number line. A
"T" represents a number dialed from a touch-tone phone and
a "P" indicates a number dialed from a rotary dial phone.
11. The printer unit is now ready to be placed in service.

- 5 -
FRONTPANELSWITCHESANDINDICATORS
LCD DISPLAY
The RACOM 2816 has a built-in LCD display. This display gives
status of lines and of the unit. It also displays the date and time
and is used to set up the unit.
When in the command or system mode, selected by hitting the 0 key,
the display will indicate that the unit is on-line. It will display
the current date and time and it will give the status of each line.
A status of Ac indicates that the line is active. Rg indicates that
the line is ringing and two dashes indicates that the line is idle
or not used.
The line display may be selected by pressing the 1 key. This will
display detailed information about the telephone line. It can
display the information as the RACOM 2816 is receiving it and before
it is printed out. It will also indicate the present status of the
line.
When the unit is off line, the display will show when the unit went
off line.
During setup, the display is a menu and may be used to edit the
unit's operational parameters.
LEDs
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Pulse LED:
The "pulse" LED indicates if the line voltage is above or
below the printer's threshold voltage. With normal ringing
mode operation, this LED is illuminated when the line
v o l t a g e i s l o w ( o f f h o o k ) a n d o f f w h e n t h e l i n e v o l t a g e i s J j
high (on hook). I
When the phone generates rotary dial pulse, this indicator J j
should flash in sequence with the dial pulses. If it does i
n o t , t h e n R 4 6 3 m a y n e e d a d j u s t m e n t . m j
Line Active LED:
The "line active" LED indicates an "off-hook" or line
active condition. This LED marks the start and finish of
each time call. The instant the "line active" LED is m
illuminated, the time indicated in the clock is stored in I
the time register. The elapsed time counter and dial input
register are then enabled. When the LED extinguishes, the
information in both registers is printed. The relay is ]
energized when this LED is illuminated. J
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KEYBOARD
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The RACOM 2816 has a sixteen button keyboard located on the face
plate. This keyboard is used to control and set up the unit. When
a key is pressed, the two LEDs will initiate a flash as each key is
recognized. During normal operation, the keyboard primarily
controls the LCD display and the keys function as follows:
Numbered Key "0"
Pressing the 0 key will cause the LCD to go to the system
display and the system commands may be entered.
Numbered Key "1"
The LCD will display detailed information about the
telephone line when the 1 key is pressed. It will display
information as the RACOM 2816 is receiving it and before it
is printed out. It will also indicate the present status
of the line. The recorder may be toggled on and off while
the 2816 is displaying line information.
m N u m b e r e d K e y " 9 "
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The 9 key is used to control if the 2816 is holding or
sending RS232 data (Option 4). See the Option 4 (Data
Output) section.
Paper Advance Key "A"
Pressing the "A" key will cause the paper to advance.
On/Off Line Key "B"
When the LCD is in the system display mode the "B" key is
used to take the RACOM 2816 on and off line. The display
and printout will indicate when this happens. When the
RACOM 2816 is off line, information will not be
accumulated and all data in the unit will be cleared.
When the LCD is displaying line information the "B" key will
toggle the recorder and audio monitor on and off. The
printer will print the status of the recorder and the LCD
display will show the status. See the section on audio
recording.
Clear Key "C"
Pressing the "C" key will clear an incomplete command key
sequence.
Display Key "D"
Pressing the "D" key will cause the printer to print out the
contents of the LCD display.

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- 7 -
Enter Key "E"
Pressing the E key will make the printer print out column
headings.
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Function Key "F"
This key is used to select any of the special keyboard
operations that are listed below. To activate the
operation, press the function key "F" and then the key
"D" or "E" for the desired operation. fii$
Clock Set - Function Key "F" and Key "E" - By pressing first
key "F" and then key "E", the RACOM 2816s clock set routing
is accessed. Please see the section on setting the
electronic clock for more information.
Set-Up - Function Key "F" and Key "D" - This combination is
used to enter the RACOM 2816s set-up program. Please see the
section on set-up for more information.
SETTINGTHEELECTRONICCLOCK
The electronic clock is a calendar clock which will automatically
compensate for the months having 28, 30 or 31 days. The clock has a
battery backup so it will continue to hold the correct time when the
RACOM 2816 is without power.
1. To enter the clock set mode, hit the F key and then the E
key on the keyboard.
2. The LCD display will now display the message "Date and 24hr
time". The date and time will be displayed on the second
LCD display line.
3. Please note that the date is displayed as month/day/year
and the time is in 24 hour format.
4. On the display, there is a flashing cursor. This can be
moved backward and forward with the A and B keys. It is
automatically moved to the right as each digit is entered.
5. Enter the date and time by typing the new date and time on
the keyboard.
6. You may cancel this clock setting routine by hitting the C
key.
7. Hit the E key to have the internal clock set to the date
and time shown on the display.
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RECORDING AND AUDIO MONITORING
The Racom 2816P has connectors for two cassette recorders and a
audio monitor jack. Audio is on the miniature connecters (1/8 inch
diameter). The subminiature connecters (Marked motor) connect to
the remote jack on the recorders and they enable the recorder's
motor to run under control of the 2816P. The 2816's printout
indicates what calls (or parts of calls) are recorded. The recorder
and audio circuits are toggled on and off automatically with
telephone usage or they may be controlled manually from the
keyboard.
To turn the audio and recorder on and off, put the LCD in the line
display mode by pressing the "1" key. The recorder and the audio
monitor may now be toggled with the "B" key. When it is toggled an
"R" or an "0" will appear on the LCD. "R" indicates that the unit
will record and "0" indicates that the recorder is off.
When the line being monitored is in use (active), toggling the
recorder will cause a printout to occur. The right side of the
paper shows two letters (R or 0), the first letter (to the left)
shows recorder status before the change and the second letter
(closest to the edge) shows the new status.
When the telephone is hung up, only one letter is printed. This
shows the record's status at the end of the call.
When the telephone is on-hook the recorder is always off. However,
what the recorder does when the telephone goes off-hook may be
changed with the "B" key and is controlled by a variable called
"Rec". See the software set section for more information on this.
LOOP EXTENDER RECEIVER
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The Racom 2816P has a receiver for a remote loop extender. This
allows the 2816P to receive signals from a remote dual tone loop
extender or slave, such as the RACOM Model LP2816. The tone
frequencies are 852 Hz and 1633 Hz. The receiver is enabled when
the mode switch is in the REMOTE position.
The 2816 may be ordered with other tone frequencies or for signal
tone operation.
An optional 48 Volt power supply (Option F) can be used to power the
remote loop extender. The power supply and the remote receiver is
enabled when the mode switch is in the REM0TE/48V position.

- 9 -
CALLER NUMBER DELIVERY (CND) Optional pffiA
The 2816P will print out the calling number when the telephone ^
company provides the service. The 2816P will print out the word j
"From" and then the phone number to indicate the telephone number
that is calling. The words "Privacy" and "Out of area" are also —
printed out as the telephone company sends them.
INKED RIBBON REPLACEMENT 1
The inked ribbon cartridge, located under the top panel of the
printing unit, should be replaced approximately every four (4) rolls
of paper, every six (6) months or whenever the printed numbers
become difficult to read.
1. Swing open the panel over the printing mechanism.
2. Before removing the old ribbon, study the way /it is
installed in the printer.
3. Remove the old ribbon cartridge by pulling out on the
tab marked "Lift".
4. Push the new ribbon straight back into the printer
mechanism until it snaps into place. Be sure the ribbon
is above the paper. Use the knob to remove any slack
from the ribbon.
PAPERTAPEREPLACEMENT m
The RACOM 2816 uses 3 inch wide adding machine tape which is
a v a i l a b l e i n m o s t o f fi c e s u p p l y s t o r e s . " 1
1. Flip open the panel which is underneath the printing
mechanism. «
2. Remove the expended roll of paper; grasp the empty roll
firmly, but carefully, and pull out. _
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3. Remove the old tube from the paper spindle and discard. 3
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4. Cut the end of the paper straight and free of folds with
a pair of scissors.
5. Slide new paper roll over the spindle and push it on
to the spindle clips.
7. While depressing the paper advance button (the A key),
push the paper into the slot at the bottom of the printer
mechanism. The paper will be automatically threaded J
through the unit and out the front. Be certain the paper
is threaded under the ribbon. ^
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SECTION TWO
This section deals with the RACOM 2816 from a more technical
viewpoint than section one. Internal adjustments or modifications
should be made only by technically qualified personnel.
CONFIGURATION
Before the RACOM 2816 is shipped, we carefully check out all
functions. We configure the unit so it will work on most phone
lines without reconfiguration. The RACOM 2816 is very versatile and
it has many uses. This section deals with the configuration and
setup of the RACOM 2816 to make it do particular things. The RACOM
2816 is configured in two ways. The first being with internal
switches and the second being with the setup of software parameters.
INTERNALSWITCHESAND CONTROLS
ACCESSTO INTERNALSWITCHESAND CONTROLS
The internal switches and controls discussed in this section are
located behind the front panel. Access to these internal switches
and controls can be gained by opening the small flap underneath the
case.
Most switches have two positions - A or B. The switch is open in
Position B and closed in Position A. A switch is in Position B when
the rocker is flush with the front edge of the switch. Switches
with toggle levers are in Position B when the toggle lever is toward
the front.
Position A is when the flat or toggle lever is toward the rear of
the switch.
DOUBLE OR SINGLE SPACE
The RACOM 2816 can either double space or single space between call
transactions. Double spacing provides a clear separation between
calls for transcribing.
Section 7 of switch SW103 controls this feature.
SW103 Section 7 Pos. A - Single space
Pos. B - Double space

- 11 -
TOUCHTONEANDDIALPULSEEXCLUSION
All units are equipped with a feature that will shut down either the
touch tone or rotary dial pulse decoders after the first digit of a
number is decoded. If the digit is a touch tone digit, the rotary
dial pulse decoder will be shut down. If the digit is pulsed, then
the touch tone decoder will be shut down. This feature helps reduce
falsing. SW103, Section 6 controls this feature.
SW103 Section 6 Pos. A - No exclusion
Pos. B - Exclusion feature is enabled as
described above.
PRINT LAST ROTARY DIALED DIGIT
Normally, a rotary dialed digit is entered into the RACOM 2816s
memory after a valid amount of inter-digit time has elapsed. In
some specialized applications, line current is reversed or removed
before the inter-digit time has elapsed. So that the last digit is
not lost in these applications, place SW103, Section 2 in Position
A. Doing this will also result in the RACOM 2816s registering touch
tone or rotary dialed digits that are received before line active
time has been exceeded.
SW103 Section 2 Pos. A - Print first/last rotary dialed
digit if it was not finished.
Pos. B - Normal
TOUCHTONEACCEPTANCEORDROPOUTTIME
Touch tone acceptance is the time in which touch tone digits are
accepted by the printer. The acceptance time begins when the line
active LED lights and resets each time a touch tone digit is
entered. After the acceptance time is exceeded, no more touch tone
digits will be accepted until after the system has been restored to
an "on-hook" condition. This feature is designed to prevent
"falsing" caused by frequencies contained in speech.
The length of time is set by setting the variable "T Tone" to the
desired time. Set "T Tone" to 255 for infinite touch tone acceptance
time.
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ROTARYDIALPULSESTIMEOUT
Thirty seconds after a call has been started, the rotary dial pulse
w decoder for a line will be shut down. This is called rotary dial
pulse timeout and it is controlled by the variable "Pulse". To
illuminate rotary dial pulse timeout, set the variable "Pulse" to
255.
r T H R E S H O L D A D J U S T M E N T ( R 4 6 3 )
The RACOM 2816 has a D. C. line voltage detector circuit in it.
This circuit detects if the phone is on or off the hook and decodes
rotary dial pulses. The telephone line voltage which causes the
RACOM 2816 to recognize an off or on hook condition is called the
threshold voltage.
The threshold voltage is set by Pot R463 and monitored by the
m "Pulse" LED. There is one R463 per line as there is one "Pulse" LED
per line. Once the R463 and the "Pulse" LED for a particular line
have been located, they may be adjusted as follows:
With normal bridging mode operation, this LED is illuminated when
L the line voltage is low and off when the line voltage is high.
m R463 should be adjusted so that this LED is illuminated when the
phone is off the hook and off when the phone is on the hook.
p When the phone generates rotary dial pulse, this indicator should
[ flash in sequence with the dial pulses. If it does not, then touch
up the adjustment of R463.
Note: Some exchanges may generate pulses on the line before or after
rotary dial sequences. These will usually make this indicator
LED flash. If this happens, R463 and dial pulse rate switch
may be used to make the printer reject these pulses.

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D I A L P U L S E R A T E S W I T C H -
For each line in a RACOM 2816, there is a Dial Pulse Rate Switch.
This switch selects the maximum dial pulse rate to be decoded by the
RACOM 2816. This is Section 1 of Switch 401 on the line board.
With the switch in position A, the maximum dial rate is 13 P.P.S.
With the switch in position B, the maximum dial rate is 21 P.P.S.
INPUT INVERT SWITCH
For each line in a RACOM 2816, there is a switch that inverts the
signal from the threshold detector. For normal operation, , the
switch for a particular line should be in position B. Put the switch
in position A to invert the input. This switch is Section1 4 of
Switch 401 on the line board.
D. C. INPUT CONFIGURATION
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Usually, the Racom Model RACOM 2816 Multiline Dialed Digit Printer
is operating in a bridging mode. This means that the RACOM 2816s ^
high impedance inputs are connected across the telephone line.
The RACOM 2816 has separate A.C. and D.C. bridging inputs for each m
line. Normally, for each line, these A.C. and D.C. inputs will be
connected across the phone line for that line.
For bridging operation, these internal switches should be set as H
follows on the appropriate line boards: J
S W 4 0 1 S e c t i o n 4 P o s i t i o n B ^
Mode switch Bridging position
R463 should be set as described in the "Threshold Adjustment
Section". The setting of other switches will also affect operation J
and are outlined in other parts of this manual. pi
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- 14 -
SOFTWARE SETUP
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Many of the operating parameters for the RACOM 2816 are contained in
the software. These parameters or variables are factory preset and
stored in a memory chip called an EPROM. However, some parameters
may be changed to suit user requirements. These parameters are user
programmable and are stored in a non-volatile memory chip called a
NOVRAM. The working memory of the RACOM 2816 is in the CPU chip^
Upon power up or reset and approximately every two hours, the CPU
selects the operational parameters from either the EPROM or the
NOVRAM, depending on Switch 103 Section One (See Microprocessor
Board section).
To make the parameter changes, the user must enter the software
setup mode. The software setup mode is entered by hitting the F key
and then the D key on the keyboard. Now the display will give a
choice of several options. Please enter the digit shown for the
option you want. These options are as follows:
HP) KEY OPTION FUNCTION
Timers Programs a number of timers that are
in seconds.
2
3
Counters
Timing
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Digit counter for each line.
Pulse timing that controls the pulse
counting section of the RACOM 2816.
EPROM This command is not shown on the
display. Pushing it will result in
all variables being reset to their
initial values from the EPROM.
6
E
Recal1
Enter
All variables will be reloaded from
the NOVRAM.
This button must be pressed to enter
data into the working memory of the
CPU. This may be done as soon as the
user completes the changes.
Save All variables will be saved in the
NOVRAM. This will flash if they need
to be saved.
8
0
Reset
Exit
Push this to do a reset of the CPU in
the RACOM 2816.
Push to exit the setup mode.