QEI 7BI1 User manual

 11
Manual 909
7BI1 Bus Interface
November 2018

Manual 909 7BI1Bus InterfaceManual 909
 11
Copyright © 2018 by QEI
Manual 909 7BI1 Bus Interface
ALL RIGHTS RESERVED
NOTICE
The information in this document has been carefully checked and is believed to be accurate.
However, no responsibility is assumed or implied for inaccuracies. Furthermore, QEI
reserves the right to make changes to any products herein described to improve reliability,
function or design. QEI does not assume liability arising to the application or use of any
product or circuit described herein; neither does it convey any license under its patent rights
nor the rights of others.
This manual and all data contained constitutes proprietary information of QEI and shall not be
reproduced, copied or disclosed to others, or used as the basis for manufacture without
written consent of QEI.
45 Fadem Road
Springfield, NJ 07081
Phone: [phone]
Fax: [phone]
Web Site:ww.qeiinc.com

Manual 909 7BI1Bus InterfaceManual 909 7BI1 Bus Interface
Copyright © 2018 QEI  11
Revisions
Revision
Description
Date
A
Release to Production
July 1989
B
Revised per Marked Print
June 2001
C
Formatting Update
August 2001
D
Formatting Update
June 2013
E
Formatting Update
December 2015
F
Updated QEI Address
November 2018

Manual 909 7BI1Bus InterfaceManual 909 7BI1 Bus Interface
Copyright © 2018 QEI Introduction  11
Contents
1Introduction ..............................................................................5
1.1 Description...........................................................................5
1.2 7BI1 Specifications..............................................................5
1.3 Table 1.1: 7BI1 Signal Connections.....................................6
2Installation ................................................................................7
2.1 Installation and Setup..........................................................7
3Theory of Operation.................................................................8
4Maintenance............................................................................10
4.1 Maintenance Philosophy....................................................10
4.2 Preventive Maintenance ....................................................10
4.3 Corrective Maintenance.....................................................10
4.4 Troubleshooting.................................................................10
4.5 7BI1 Replacement.............................................................10
4.5.1 Ordering Spare or Replacement Subassemblies.10
4.6 Returning Defective Subassemblies ..................................11
5Parts List.................................................................................12
6Drawings .................................................................................13

lManual 909 7BI1Bus Interface
Copyright © 2018 QEI Introduction  11
1 Introduction
1.1 Description
The 7BI1 Bus Interface card is part of the DLM-6102 and DLM-6103 Distribution Line Modem
Expansion Kits for the QUICS 3150 Remote Terminal Units.
The QUICS 3150 Remote Terminal Unit contains a 6CP2 Central Processing card. When the
remote is modified with a DLM Distribution Line Modem Expansion Kit, the 6CP2 card is
replaced with a new 6CPP2 Central Processing Panel. The 6CPP2 panel does not mount into
the card frame where the 6CP2 was originally installed. The 7BI1 Bus Interface card is
plugged into the card slot normally occupied by the 6CP2 Central Processing card. The 7BI1
card is the interface between the I/0 bus of the remote and the newly installed 6CPP2 Central
Processing Panel.
The 7BI1 card allows the 6CPP2 Central Processing Panel to become the processing panel.
Signals that appear on the J4 connector of the 6CPP2 are brought to and from the
motherboard of the 3150 Remote via the 7BI1. These signals are output onto the
motherboard in the same fashion as with the 6CP2. Therefore, the cards in the 3150 Remote
see the 7BI1 as being transparent. That is, they are controlled by the 6CPP2 instead of the
6CP2.
Eight (8) option platforms are provided so the 7BI1 can address any eight (8) of the sixteen
(16) addressable slots of a 3150 Remote card frame. Only eight (8) of the slots can be
addressed since there are only eight (8) address signals present on the J4 connector of the
6CPP2.
Three (3) relays are also provided to select two (2) bus relays and the common transmit relay
on a 7DPA1 Distribution Power Amplifier.
1.2 7BI1 Specifications
Input Power: +12 Volts do @ 50 mA
External Connections:
P1 - Signals to/from the 3150 Remote motherboard.
J1 - Drives the bus select relays on the 7DPA1.
J2 - Drives optical isolators on Rev B Transceiver board which in turn drives
bus select relays on 7DPA1. This connector is normally not used.
J3 - Signals to/from J4 connector of 6CPP2.
NOTE
See Table 1-1 for specific signal connections

lManual 909 7BI1Bus Interface
Copyright © 2018 QEI Introduction  11
1.3 Table 1.1: 7BI1 Signal Connections
Pin Numbers
P1 J1 J2 J3 SIGNAL
11 -- -- 34 DATA BIT 0 (D0)
10 -- -- 33 DATA BIT 1 (D1)
9 -- -- 32 DATA BIT 2 (D2)
8 -- -- 31 DATA BIT 3 (D3)
7 -- -- 30 DATA BIT 4 (D4)
6 -- -- 28 DATA BIT 5 (D5)
5 -- -- 29 DATA BIT 6 (D6)
4 -- -- 27 DATA BIT 7 (D7)
14 -- -- 12 ADDRESS BIT 0 (A0)
R -- -- 11 ADDRESS BIT 1 (A1)
15 -- -- 14 ADDRESS BIT 2 (A2)
16 -- -- 10 READ/WRITE (R/W)
17 -- -- 9 WRITE PULSE (WP)
12 -- -- 24 INTERRUPT (IRQ)
C,3 -- 2 -- +12 V DC
V,17 -- 1 25,26 0 V DC
U -- -- -- X ADDRESS 0 (X0)
T -- -- -- X ADDRESS 1 (X1)
M -- -- -- X ADDRESS 2 (X2)
L -- -- -- X ADDRESS 3 (X3)
S -- -- -- Y ADDRESS 0 (Y0)
K -- -- -- Y ADDRESS 1 (Y1)
J -- -- -- Y ADDRESS 2 (Y2)
H -- -- -- Y ADDRESS 3 (Y3)
-- -- -- 16 XY ADDRESS 0 (XY0)
-- -- -- 15 XY ADDRESS 1 (XY1)
-- -- -- 18 XY ADDRESS 2 (XY2)
-- -- -- 17 XY ADDRESS 3 (XY3)
-- -- -- 21 XY ADDRESS 4 (XY4)
-- -- -- 22 XY ADDRESS 5 (XY5)
-- -- -- 19 XY ADDRESS 6 (XY6)
-- -- -- 20 XY ADDRESS 7 (XY7)
-- -- -- 13 GROUP ADDRESS (4000-40FF)
-- 3,4 4 3 BUS SELECT 0
-- 5,6 5 4 BUS SELECT 1
-- -- 6 1 BUS SELECT 2
-- -- 7 2 BUS SELECT 3
-- 1,2 8 7 TRANSMIT SELECT
Environmental:
Operating Temperature: -40C to +85C
Relative Humidity: 0 to 95% non-condensing
OPTIONS:
Platforms X1 through X8 strappable to select any eight (8) of the sixteen (16)
addressable slots in a 3150 Remote card frame.
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Manual 909 7BI1Bus Interface7BI1
Bus Interface
Copyright © 2018 QEI Installation  11
2 Installation
2.1 Installation and Setup
Before installing the 7BI1 card, be sure to check the platform strapping. The platform straps
essentially translate the 6CPP2 address signals into address signals recognizable to the
3150 Remote cards. Perform the following steps to verify or set the platform straps (see the
sample strapping in Table 2-1).
Write down the cards and their slot numbers in the 3150 Remote card frame.
Using Table 3-3, write down the two platforms which must be strapped to
select the desired slots for each card.
Using Table 3-2, note the positions on the platforms that correspond to the
card that is to be addressed.
With the above information, install a diode in the two platforms selected at
the desired position for each card.
TABLE 2-1. Sample Trapping Information
When installing the diodes, be sure to position the diode with the cathode facing toward the
higher numbered pins of the platform (9-16). The anodes should always face the lower
numbered pins (1-8). Almost any signal diode can be used (1N461A is recommended).
Installing the 7BI1 consists of unplugging the 6CP2 and replacing it with the 7BI1. A 34 pin
flat ribbon cable then plugs into the J3 connector of the 7BI1 while its other end plugs into the
J4 connector of the 6CPP2. A 6 pin cable then plugs into the J1 connector of the 7BI1. Where
it terminates would depend on the particular system application (7DPA1 or an SCU).

Manual 909 7BI1Bus Interface7BI1
Bus Interface
Copyright © 2018 QEI Theory of Operation  11
3 Theory of Operation
The key to understanding the 7BI1 is to understand the address strapping options. Since the
6CPP2 can only address eight (8) 3150 cards, there must be a means of selecting these
eight (8) from the sixteen (16) possible addresses which the 6CP2 can normally handle. This
is done via the X1 through X8 platforms.
The 6CP2 selects other 3150 cards within the card frame via a four-by-four address matrix
(XO-X3, YO-Y3). The 7BI1 must, therefore, simulate these signals.
The address signals coming from the J4 connector of the 6CPP2 consist of eight (8)
individual address signals (XYO-XY7) and a group address signal (4000-40FF). Platforms
X1 through X8 convert these signals into the form used by the 6CP2. That is, every one of
the eight (8) individual address signals can generate two signals in the four-by-four address
matrix (one X and one Y).
Since many of these signals can overlap, the strapping is done with diodes which essentially
OR's the addresses together. That is, up to four (4) different address signals from the 6CPP2
could use the same X address (X2 for instance). Each platform generates one of the address
signals in the four-by-four address matrix. Table 3-1 defines the platforms and their
corresponding matrix signal.
TABLE 3-1. Platform/Matrix Signal
PLATFORM 4 X 4 SIGNAL
X1 X0
X2 X1
X3 X2
X4 X3
X5 Y0
X6 Y1
X7 Y2
X8 Y3
The eight (8) address signals from the 6CPP2 and what they normally correspond to, are
shown in Table 3-2.
TABLE 3-2. Signals & What They Correspond To
Platform PIN Address
Function
Position
XY0
6TM1
1
XY1
6CM
2
XY2
6AD
3
XY3
6SI (1st)
4
XY4
6SI (2nd)
5
XY5
6SI (3rd)
6
XY6
6SP
7
XY7
6FD
8
Each address signal connects to the same position on each of the eight (8) platforms. That is,
XYO connects to position 1 (pin 1) on all of the platforms. Similarly, XY1 connects to position
2 (pin 2) on all of the platforms. This is also shown in Table 3-2. This gives any of the eight
address signals from the 6CPP2 the capability of selecting any two of the four-by-four
address matrix signals (one X and one Y). The two are selected by placing a diode in the
positions desired. Table 3-3 shows the relationship between the positions and the slot
numbers of the 3150 Remote card frame.

Manual 909 7BI1Bus Interface7BI1
Bus Interface
Copyright © 2018 QEI Theory of Operation  11
The outputs from the platforms (the cathode side of the diodes) are each brought to the input
of an AND gate where they are gated with the group address signal, 4000-40FF. The outputs
from the AND gates are the actual X and Y address signals which drive the 3150 Remote
motherboard.
The remaining signals needed to interface to the 3150 boards are merely passed through the
7BI1 from the J3 connector to the P1 connector (DO-D7, AO-A2, R/W, WP, IRQ, etc.).
Three relays on the 7BI1, K1-K3, are used to drive the bus select relays on the FDPA1 or
SCU. Their contacts enter via J1.
TABLE 3-3. Relays Used to Drive Bus Select Relays
ADDRESS SLOT PLATFORMS
0F88-0F8F 15 X2 & X5
0F90-0F97 14 X3 & X5
0F98-0F9F 12,13 X4 & X5
0FA0-0FA7 11 X1 & X6
0FA8-0FAF 10 X2 & X6
0FB0-0FB7 9 X3 & X6
0FB8-0FBF 8 X4 & X6
0FC0-0FC7 7 X1 & X7
0FC8-0FCF 6 X2 & X7
0FD0-0FD7 5 X3 & X7
0FD8-0FDF 4 X4 & X7
0FE0-0FE7 3 X1 & X8
0FE8-0FEF 2 X2 & X8
0FF0-0FF7 1 X3 & X8
0FF8-0FFF 17 X4 & X8

Manual 909 7BI1Bus Interface7BI1
Bus Interface
Copyright © 2018 QEI
4 Maintenance
4.1 Maintenance Philosophy
The 7BI1 Bus Interface is a high-speed digital panel that can be serviced by using standard
equipment and techniques. Equipment such as digital multimeters and oscilloscopes can be
used to measure voltages and check pulse waveforms.
4.2 Preventive Maintenance
Routine maintenance of solid-state equipment is not recommended because of the high
reliability of its components. Failure of such components (when it does occur) is sudden,
rather than gradual and unnecessary handling can only encourage failures.
4.3 Corrective Maintenance
Before attempting corrective maintenance, remember that QEI will service its equipment
under the terms stated in Standard Terms and Conditions when the equipment was
purchased. Only skilled, qualified technicians with extensive experience servicing comparable
equipment should perform corrective maintenance.
CAUTION
DO NOT DISCONNECT OR CONNECT THE 7BI1 CARD WITH POWER ON. TRANSIENT
VOLTAGES GENERATED DURING SUCH PROCEDURES CAN PERMANENTLY DAMAGE
COMPONENTS. ALWAYS BE AWARE OF WHAT EFFECT YOUR ACTIONS CAN HAVE ON
EXTERNALLY CONTROLLED EQUIPMENT.
4.4 Troubleshooting
Troubleshooting the QUICS panels in the field is not recommended unless a trained staff of
service personnel with a fully equipped shop containing test equipment, oscilloscopes, etc.
would be available to isolate a faulty component. QEI will service its equipment at a nominal
fee, or without cost while the equipment is under warranty. When field servicing is attempted,
the technician should be thoroughly familiar with the theory of operation and the circuit panel
schematics. QEI does offer maintenance training courses so that field maintenance can be
conducted efficiently.
When checks are made on the cards, all inputs should be tested first. With the aid of the
schematic, the technician should start at the outputs of the card and work backwards into the
circuitry until the faulty component is isolated.
Most micromodules on the printed circuit cards are soldered in place. Special printed-circuit
repair techniques are required for their removal. Excessive heat may seriously damage the
circuitry. Damage caused by improper soldering can void your warranty! Standard
components, such as capacitors and diodes, are best replaced by clipping off the faulty
component close to the body and soldering the replacement to the leads of the original
component.
4.5 7BI1 Replacement
For minimum subsystem down time, suspected 7BI1 cards should be replaced and either
repaired off line or returned to QEI for repairs.
4.5.1 Ordering Spare or Replacement Subassemblies
Spare or replacement subassemblies may be ordered from QEI. The part number is
40-057026-001.

Manual 909 7BI1Bus Interface7BI1
Bus Interface
Copyright © 2018 QEI
4.6 Returning Defective Subassemblies
To return a faulty card to QEI, proceed as follows:
1. Wrap the subassembly (panel or card) with anti-static and shock-resistant
material.
2. Enclose a note with the package stating the fault symptoms.
3. Identify the system by QEI's Sales order number and original location in the
system. Refer to Equipment Layout drawings (shipped with system) to locate
from where the panel was removed. The location is specified as a boxed
letter such as the following:
01 , 02 , etc.
4. Include a copy of the original purchase order or equivalent statement if the
panel is still under warranty.
5. Send the package via common carrier to:
QEI
60 Fadem Road
Springfield, New Jersey 07081
Attention: Customer Service Department

Manual 909 7BI1Bus Interface7BI1
Bus Interface
Copyright © 2018 QEI
5 Parts List
An electrical parts list for the 7BI1 Bus Interface card is included in this section.
QEI
15:26:58 28
SEPT 1988
SINGLE LEVEL BILL OF MATERIAL LISTING
REPORT: 0056
PAGE 1
DOM NO: 40-
057093-001
U/M: EA
DRAWING NO: A40-057093-
001D
ITM
PART #
DESCRIPTION
UM
QUALITY-
PER
DRAWING #
CRCT-
DSNG
1
00-056791-
001
BUS INTERFACE
SCHEMATIC
EA
REF
A00-056791-001D
CR,1-4
2
10-055654-
003
DIODE IN4003 RECT
EA
4,000
SEE 10-055654-001
C1,C2
3
10-055941-
007
CAP 15MF 20V TANT DIP
EA
2,000
SEE 10-055941-000
Z1
4
10-055970-
049
RES PACK 100K
EA
1,000
SEE 10-055970-000
U1,U2
5
10-055980-
001
IC4081 14DIP QUAD 2-INP
AND
EA
2,000
B10-055980-001A
K,1-3
6
10-056451-
001
RELAY 12VDC 1 FORM C
EA
3,000
A10-056451-001A
C3
7
10-056604-
001
CAP .047MF 20% 50V CER
MOND
EA
1,000
SEE 10-056604-000
X1-X8,
(5)
8
20-055637-
002
PLATFORM, 16 PIN
EA
8,000
A20-055637-002A
(3)
9
20-055707-
001
CARD EJECTOR
EA
2,000
C20-055707-001A
(4)
10
20-056206-
004
SOCKET IC, 16 PIN
EA
11,000
SEE 20-056206-000
J2
11
20-056395-
001
CONN HEAD 9 PCB MOUNT
EA
1,000
A20-056395-001
J1
12
20-056395-
002
CONN HEAD 6 PCB MOUNT
EA
1,000
A20-056395-002
J3
13
20-056406-
001
CONN HEAD 34 PCB MOUNT
EA
1,000
A20-056406-001
(2)
14
30-058259-
001
PCB FABRICATION
EA
1,000
*** END OF REPORT 0056 –15:27:03 28 SEPT 1988 ***

Manual 909 7BI1Bus Interface7BI1
Bus Interface
Copyright © 2018 QEI
6 Drawings
This section contains the Schematic and Electrical Assembly diagrams of the 7BI1 Bus
Interface card. The drawings are listed in Table 6-1.
TABLE 6-1. Drawings
7BI1 Bus Interface Card, Schematic Diagram 00-056791-001