SAN/BAR SB6610B User manual

SANlBAR CORPORATION
Circuit Description
InstallationSeries
Section 6610B-000
June 1979
Printed in U.S.A.
SB6610B 5-Line Key System
lssue 3
Contents PAGE
1.0 GENERAL 1
2.0 SPECIFICATIONS 1
3.0 INSPECTION 3
4.0 MOUNTING 3
5.0 INSTALLERCONNECTIONS 3
6.0 CIRCUIT DESCRIPTION 6
7.0 TESTING 6
1.0 GENERAL
1.1 This section provides general description and
installation instructions for the SANlBAR
SB6610B Key Telephone System - lssue 3.
The SB6610B KTSconsists of a basic pre-wired
mounting fixture (for wall mounting) which will
mount a variety of plug-in circuit cards, and a
power supply assembly. The system is design-
ed to provide a means of connection to a max-
imum of five Central Office lines and also has
one mountingslot for several special functions.
1.2 The SB6610B may be equipped to provide such
features as music-on-hold, PA coupler, Manual
Intercom, Off-Premises extension, FM music
source, and Dial-Intercom.
The SB6610B is provided with three quick con-
nect distribution blocks as shown in Figure 1
for all wiring interfacing to the Central Office
and local distribution.
1.3 The powersupply assembly (shown in Figure 2)
mountsat the top of the SB6610B and isheld in
place with snap fasteners for quick installation
or replacement. All distribution wiring between
SB6610B KEY TELEPHONE SYSTEM
FIGURE
1
the power supply and the rest of the SB6610B
assembly is by a keyed locking connector
assembly assuring proper interconnect wiring.
The power supply assembly may be provided
with interrupter andlor ringing generator as op-
tions. The power supply and ringing generator
are U.L. recognized assemblies.
1.4 The SB6610B is wall mounted; mounting is
easily accomplished by one installer.A keyhole
is located at the top center of the assembly to
initially mount the unit, and mounting holesare
located on each side of the center terminal
block at the bottom to secure the assembly to
the wall. Each unit is provided with a cover.
2.0 SPECIFICATIONS
2.1 List of Applicable Drawings:
a. Assembly Drawing
Chassis: ED-6610-200(Fig. 6)
Power Supply: ED-6610-3011306(Fig.
7)
Ring Generator: ED-6610-401(Fig. 8)

b. Bill of Materials
Chassis: BM-6610-200
Power Supply: BM-6610-3011306
Ringing Generator: BM-66101401
c. Schematic Diagrams
System: WD-6610-200(Fig. 4)
Power Supply: SD-6610-301(Fig. 5)
Ringing Generator: SD-6610-401(Fig. 5)
2.2 Electrical Characteristics
a. 5 CO or PBX Lines
b. One special feature connector is provided
for options such as the SB6609B Dial Inter-
com, SB423A Manual Intercom,or SB4201A
FM Receiver.
c. lnput Power: 90 to 130 VAC, 60 Hz.
SB6610B-301 BASIC SUPPLY
-T
SB6610B-306 SUPPLY WlTH RINGING GENERATOR
d. Available Voltages:
24VDC: A-Battery (AC Ripple suitable for
Talk Battery) 0.7A
18VAC: (Buzzers) 1 amp continuous, 4
amps intermittent. SB6610B-306 SUPPLY WlTH INTERRUPTER
10VAC: (Lamps) 1amp continuous, 4amps
intermittent.
105VAC; 30 HZ: (Ringers) 50 ma nominal.
e. Fuses:
11OVAC lnput - 2A.
10118VAC Output - 5A.
24VDC Output, 105VAC ringing are self
limiting and are not fused.
f. Operating Environment: 0' to 50'6,
Humidity to 90%.
g. Lamp Flash: Flashing visual signal on in-
coming calls.
h. Station Audible or Common Audible:
18VAC for buzzers or optional 105VAC, 30
HZ for ringers.
i. Line Busy Indication: Steady lamp signal
during line busy conditions.
j.
Hold Function: Individual holding of calls
on any line.
k. Lamp Wink: Winking visual signal during
hold condition.
FIGURE 2. POWER SUPPLY OPTIONS
2.3 Physical Characteristics
a. Overall Dimensions(includingcover)9.8"
W
x 15" H x 7" D.
b. Wall MountingHolds:
3 mounting holesare
providedwith%inchclearance holesfor the
mounting hardware. The maximum O.D. for
washers used should be
3h" or less.
c. Rear Access: Rear access is normally not
required. The power supply is mounted
from the front and all normal wiring is
available from the front.
d. Weight: Approximately 13 Ibs. with power
supply. (Not including circuit cards).
e. Component Connectors (power unit): A
quick-connect connector is provided for
ease of installation of the power unit, with
prewired harness for the chassis.
f. Interrupter Mounting: Plug-in connector is
prewired for installation of the mechanical
interrupter provided by SANIBAR as part
number POR-3010-000A.

2.4 KTS Circuit Cards e. SB423A MANUAL INTERCOM-
a. SB4000F KTU LlNE CARD
-
Specially designed circuitry and solid state
components eliminate high voltage transient
failures and prevent false ring-inthrough line in-
duced AC voltages or remote two-wire
telephone instrument dialing. Design
guarantees that 200 milliseconds of ringing
signal will trigger the ring-in circuitry, and also
provides protection against drop-out of hold
during battery reversal.
Equipped with a light emitting diode to indicate
busy or idle line condition. Also available with
circuitry that protects against false "Dial-1
transfer" with a strap option for 500ms Delayed
Hold Release.
b. SB4100A KTU LlNE CARD FOR OFF-
PREMISES EXTENSIONS
-
A complete KTU line circuit with the additional
circuitry required to permit duplication of key-
set features and supervision at remote loca-
tions to provide off-premises extension service
with one control pair. Provides means for two,
or more, connected stations to completely con-
trol a telephone circuit. One unit required at
each location. Loop limits 1800 ohms.
C. SB4200A MUSIC-ON-HOLDCARD -
Provides KTU Line Card, Music-On-Hold and
Bell System Interconnect interface(LOH),(STC)
functions all on one 18-pin circuit card. With
these built-infeatures, installation consists on-
ly of connecting of two leads from the music
source to two points on the KTU mounting
shelf. Noother auxiliary devices or wiring is re-
quired. The built-in LOH specification circuitry
provides DC isolation, amplitude limitingat -12
dbmand at least 85 dbm cross-talkattenuation.
Equipped with LED to indicate busy or idle con-
dition.
d. SB4201 FM RECEIVER FOR MUSIC-ON-
HOLD
-
A complete music source designed to be used
in conjunction with SB4200A KTU line cards to
provide music-on-holdservice. One SB4201A is
normally sufficient to provide service for an en-
tire installation. Receiver is mounted on a
18-pin KTU line card-sized circuit board which
inserts in any KTU line card position. Music is
transmitted from the SB4201A to SB4200A line
cards on pins3and 18via common straps inthe
KSU.
Standard KTS manual intercom similar to
WECO 401. Manufactured to SANIBAR's strict
quality control for long, trouble-free service.
f. SB6609B SINGLE LINK INTERCOM
Single link intercom providing intercommunica-
tions between 10 stations of a key telephone
system. The basic unit SB6609B is rotary dial
and the model SB6609B-100 contains a tone
converter so that both rotary dial and touch-
tone phones may be intermixed within the inter-
com system. The basic SB6609B intercom is
field expansable to include the touchtone con-
verter by ordering the SB6609B-101assembly.
3.0 INSPECTION
Inspect the unit thoroughly as soon as possible
after delivery. Visually inspect for broken and
loose wires, or chassis damage. If any part of
the unit has been damaged in transit, report the
extent of damage to the transportation com-
pany immediately.
4.0 MOUNTING
The SB6610B isdesigned for wall mountingand
should be mounted firmly to a suitable back-
board as required. Three mounting holes are
provided for use with
1h" lag bolts or wood
screws. Clearance isprovided for up to
314'' O.D.
washers. Locate the desired position for the
KTS and mark the top-center keyhole location.
NOTE: The KTS may be mounted as close as
desired to adjacent equipment or ceiling. No
clearance for the hinging of the cover is re-
quired.
Screw the KTS to the wall with the one top
mountinghole,then locatethe two lower moun-
ting holes.
5.0 INSTALLER CONNECTIONS
The SB6610B KTS is factory wired and requires
only minimal amount of installer wiring for
most installations.A prewired connector allows
the power supply to be quickly installed. All
normal user functions appear at the three
feature blockslocated onthe chassis. Figures 4
& 5 show the basic wiring for the system and
power unit.

5.1 Feature Block Connections
Line cards and special feature cards plug into
the
6 standard 18-pinconnectors. The required
functions appear for distribution at the ap-
propriate locations of the feature blocks..
Card positions 1 thru 5 are wired for standard
line cards (such as the SB4000F or WECO
400D). Position 6 is wired primarily for the
SB6609B Intercom, but may beadapted to other
special features.
a. For card positions 1thru 5, all wiring is per
conventional practicewith the following excep-
tions. Pins 3 and 18 appear individually at the
feature blocks (rather than bussed) for use on
special function cards. Pin 10 iswired for inter-
rupted 18VACfor buzzers. Pin 11iswired for in-
terrupted 105VAC for ringers. Therefore either
interrupted buzzer or ringing can be chosen for
common audible by strap option on the line
card. For buzzers, option-T. For ringers, option-
W.
b. Eachof thethree feature blocks iswired for
two circuit card connections as shown below.
Figure3gives the function asthey appear at the
blocks.
TB-A(upper)
TB-A(lower)
TB-B(upper)
TB-B(lower)
TB-C(upper)
TB-C(lower)
Pos. 1
Pos.2
Pos.3
Pos.4
Pos.
5
Pos.6
c. Table 1belowdefines the possibleusageof
each of the card positions for the most com-
mon usage functions. Follow the circuit
descriptions of the individual cards for detailed
installation instructions:
Table 1 SANIBAR SB661OB
Card Type Card Slot
Card Function Number Assignment
1. Line Card SB4000F 1-5
2. Off Premises
Extension Line
Card SB4100A 1-5
3. Music On Hold
Line Card SB4200A 1-5
4. Music Source
(FM Tuner) SB4201A 1-6
5. Manual
Intercom SB423A 1-6
6. Single Link Dial
Intercom SB6609B 6 only
d. Cable routing to the feature blocks is up
through two cut-outs in the bottom of the KTS
cover. Cut-outs in the chassis for securing the
cable with "ty-wraps" have been provided. Do
not route any wires along the outer edge of the
chassis that will interfere with the KTS cover.
5.2 POWER SUPPLY INSTALLATION
a. SB6610B-3011306Power Supply
The power supply is installed in the upper part
of the chassis, and held in place by snapping in
the two locking plungers. Connection is made
to the system through a keyed female connec-
tor J7 on the power supply and mating male
connector P7. Route the power supply cord
through either the left or right cut-outsprovided
in the cover. (Using the left cut-out may require
that the cord lay over the top of the ring
generator.) The line cord is then plugged into
the 117V,60Hz AC supply.
NOTE: Although the chassis and positive bat-
tery are grounded through the AC line cord,
there isthe possibility of lightningdamage due
toavoltage difference to true earth ground. It is
therefore recommended that connection be
made to a good ground, such as a main cold
water pipe,to binding post El.The largest wire
that Elwill accept is 12 AWG.
b. SB6610B-3001305Power Supply
The mounting chassis for the new issue KTS
has also been revised to add support braces in
the power supply mounting space. If it is
desiredto mount a previous issue power supply
(-3001305) these supports must be removed.
This is easily accomplished with a pair of wire
cutters.
c. SB6610B-401 Ringing Generator
This section only applies for field installation of
a ringing generator in the SB6610-301 power
supply. (The SB6610-306power supply isequip-
ped with the ringing generator mounted in
place).
Disconnect the line cord from the AC supply
and remove power supply from the chassis.
Mount the ringing generator assembly on the
front-side of the supply, using the four unused
holes on the mounting plate. Orient the
generator assembly so that the connector is
positioned over J10 of the power supply. Use
the four screws provided.

d. Interrupter
To install the interrupter the powersupply does
not have to be removed from the chassis. Simp-
ly plug the interrupter into J8, and secure it by
tightening the captive screw.
e. BelllBuzzer Option for lntercom
A U-link strap option is provided on the power
supply so that either 105VAC (bell) or 18VAC
(buzzer) will appear at J6, the intercom card
position. Set U-linkas follows:
18VAC - Option A (factory set)
105VAC - Option B
The 181105VAC option also appears at TBA
for external use (see figure 4).
5.3 INTERCOM INSTALLATION
the feature blocks. Jumper (at the appropriate
line position)AG to3, AB to 18 as shown in Fig.
3. 18VAC appears at TBA as described in sec-
tion 5.2e, if required for customer provided
buzzer signaling. Referto CD-0423-000for more
details.
e. lntercom Feature Block Straps
- TBC
The strap for the SB6609A or SB6609B 10 sta-
tion intercom is factory strapped. Remove the
strap and restrap the feature block if the
SB423A manual intercom or other feature is us-
ed in position 6.
Assembly From
-
To
-
a. SB6609A 10-Station lntercom 5.4 MUSIC-ON-HOLDINSTALLATION
Installthe SB6609A in position 6of the KTS on-
ly. Select the audible signaling (18 VACl105
VAC) as specified in Sections 5.2e. Refer to
figure 3 for function assignment at the feature
block. NOTE: Audible common RG is the
same as Lamp Ground (LG). Terminate the
buzzer or bell returns to spare RG to LG ter-
minals as required. Refer to CD-6609-000for
more details.
b. SB6607A-800Touch-Tone Adapter
Install the SB6607A-800 in position 5 on the
KTS only. Removethe XI,X2, X3 straps located
on the circuit board. Make the following con-
nections at the feature blocks; (a) Line 5
-
Jumper COT to OPT2, jumper COR to OPT1, (b)
Jumper line5-Tto line6-R. Referto CD-6607-800
for more details.
c. SB6609B 10 Station lntercom
Installthe SB6609B in position 6of the KTS on-
ly. Select the audiblesignaling (18VACl105VAC)
as specified in section 5.2e. Refer to Fig. 3 for
function assignment at the feature block TBC.
NOTE: Audible common RG is the same as
lamp ground (LG). Terminate the buzzer or
ringer returnsto spare RBor LG terminals as re-
quired. Refertothe SB6609Bcircuitdescription
for additional details.
a. SB4200A Line Cards
The SB4200A cards may be installedin position
1 thru 5. The music source is distributed via
pins3and 18. Jumper togetherallpin3'sandall
pin 18's at the appropriate feature block posi-
tions involved.
Connect the music source (if externally provid-
ed toany of the pins3and 18terminals. Referto
CD-4200-000for more details.
b. SB4201A FM Receiver
If using the SB4201A, install in any spare posi-
tion 1thru 6. Jumper (at the feature block) pins
3and 18to the rest of the music distribution as
described above. If using position 6 for the
SB4201A, the pins 3 and 18 are labeled Sig-1
and 2 respectively (refer to figure 3). External
antenna connections are brought into the
feature block to COT, COR (Sig-0and 5 in posi-
tion 6).
NOTE: If usingAE linecards for music-on-hold,
connect togetherall the pin3's of each position
including the SB4201A. Leave pin 18 open at
each line position. Jumper AG to 18 at the
SB4201A position.
5.5 COVER MOUNTING
d. SB423 Manual lntercom
May be installed inany line card position 1thru
6. Talk battery to the card must be jumpered at
The cover for the KTS secures to the chassis by
snap-intabs. The cover does not require any ad-
ditional clearance from the ceiling or adjacent

equipment. To mount the cover, first insert the
two top mounting tabs. Secure the cover by in-
serting the two lower (outside) tabs and then
snapping the locking tab (lower-middle) into
place. To remove, press up on the locking tab
and the cover will come off easily.
normally considered subject to failure.
However, possible wire breakage or poor wire
terminations may be verified using normal con-
tinuity checking procedures with a standard
multimeter (Simpson 263 or equivalent).
7.2 Power Supply Assembly
6.0 CIRCUIT DESCRIPTION
Please refer to the schematic drawings Figures
4
& 5 for the following descriptions.
6.1 SB6610B-301Power Supply
117VAC is applied to the primary winding (Blk-
Blk)of transformer TI. The transformer has two
secondary windings. One winding is tapped to
provide 10and 18VACwhich provides the lamp
and buzzer output voltages. The other winding
has an output of 32 VAC which is full-wave rec-
tified by diode bridge CR1-CR4 to produce
40VDC acrosscapacitor C1. Transistors Q1 and
Q2, together with Zener diode CR5, form a pre-
regulator which keeps aconstant 30VDCacross
the input of VR1. VR1 is an integrated voltage
regulator which maintains a constant 24VDC at
its output. VR1 is internally current limited, so
no output fusing is necessary.
If the system difficulties is determined to be
related to the power unit, make sure that the
system power requirements have not exceeded
the powersupply ratingspecified in section 2.0.
Make sure that the installer connections are
made properly. Verify that the connector is
mating properly. If trouble persists, verify that
all power supply voltage outputs are present us-
ing a standard multimeter. Refer to the
schematic diagrams for locatingwhere the out-
puts appear. (NOTE: It may be necessary to
remove the power supply from the KTS to verify
the problem if it isdue to shorts inthe system.
7.3 If it has been determined that there has been a
card, chassis, or power failure; do not attempt
to make field replacement of electrical parts.
The SB6610B is warranted for a period of 2
years from date of purchase.
6.2 SB6610B-401Ringing Generator Return unit to:
AC linevoltage appearsacross the split primary
windings and associated network of T2.
Because of the diode CR1, much more current
flows in one direction than the other, causing
the secondary voltage to have a heavy 30 Hz
component. Capacitor C1 and the secondary
winding are resonant at 30 Hz, so that the out-
put voltage across T2-4 and T2-3will be an ap-
proximate sine wave, with a fundamental fre-
quency of 30 Hz.
6.3 Interrupter
When AC common is applied to the interrupter
on the ST lead, the motor will run. IOVAC,
18VAC and 105VAC are interrupted by cam
-driven contacts to provide Lamp Wink, Lamp
Flash, Interrupted Buzzer and Ringing voltages.
7.0 TESTING
7.1 Key Telephone System
SANlBAR Corporation
17422 Pullman St.
P.O. Box 11787
Santa Ana. CA 92711
For Technical assistance call
[phone]
If trouble isencountered with the SB6610B Key
Telephone System, check that all installer con-
nections or strap options have been made pro-
perly. Refer to the individual circuit card
descriptions for test of the units. The KTS fix-
ture contains noelectrical components that are

TB - AIB
CENTRAL
OFFICE
LlNE
LlNE 1
& 3
STATION
CONNECTIONS
-----
CENTRAL
OFFICE
LlNE
LlNE
2 & 4
STATION
CONNECTIONS
SPARES
=
COT 3 18
Inn n
uuuu
COR AG
I- -
PINS 3, 18 FROM CIRCUIT CARD
CONNECTOR USED FOR SPECIAL
SB4100A - AER (18) STC (3)
SB4200A - MOH (3, 18)
SB4000F - STC (3)
SB4201A - MUSIC (3, 18)
SEE C.D. of INDIVIDUALCARDS
FOR DETAILED INFORMATION
SB423A MANUAL INTERCOM
(FEEDS TALK BATTERY TO LINE)
SPARES FOR CUSTOMER USE
2 3
FEATURE BLOCK CONNECTIONS
FIGURE
3A

T B-C
CENTRAL
OFFICE
LlNE
LlNE 5
STATION
CONNECTIONS
STATION
AUDIBLE
STATION
LlNE
CONNECTIONS
STATION
LAMP
CONNECTIONS
OPT 2
OPT 1
WHEN USING SB6607A-800
TOUCH-TONE-CONVERTERWITH
SB6609A INTERCOM, STRAP
COT TO OPT 2
3 CORTO OPT 1
I! T (LINE 5) TO R (LINE 6)
WHEN USING THE SB4201A
FM RECEIVER IN POSITION 6, STRAP
1 TO
3 (OF SB4200)
13 2 TO 18 (OF SB4200)
::
MUSIC OUTPUT IS SIG 1
AND
SIG 2
EXT. ANTENNA INPUT IS
SIG 8 AND R
NOTE: THE STATION AUDIBLE FOR
SIGNALLING ON THE INTERCOM
REQUIRES THAT THE B1 LEADS BE
TERMINATED ON SPARE RG OR LG
FEATURE BLOCK CONNECTIONS
FIGURE 3B

FIGURE 4
9

LFI(IOVAC FLASH)
PIN I KEYED
aa (10ev4c LOU 0 d '.! 4 - 2' vDc
LWZ (10 VAL WINK)
Q rlar JUUP~~~ WI ( wz ARE FACTOII INSTAUID TO PWVIDC CH~SIS
R, (103VAC
COUYECTIOU TO DC~AC cuos REMOVE IF IroLArloN aroulrro.
e ALL RrnSlSm~ '14 w.f 5%
@REF ED.WI0-LO6 FOR ASSY CY llNOlNb61NER410R
10 POWER SUPPLY(FACTORY PROVIDED FOR 5866106-306 ONLY).
3 DIODE5 ARE IN 4OO2
2 IN>IALL WILLIS PCR WIRE LIST WL-6616-301
I. ALL PARIS ASSEMBLED 10 ED-6610-801
NOTES: UNLISS OlHf.L\WIbE SPECIFIED
\ \sr(MoToR START) I , UI mrwn u - I
J 7
A
PIN lN6LRT 8lOL)