This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the
equipment.
DOC Statement
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
This manual describes products which include copyrighted CTI Products, Inc. computer programs in semiconductor memory. CTI Products, Inc. reserves all
Computer Software Copyrights
rights for these programs, including the exclusive right to copy or reproduce the copyrighted computer programs in any form. No copyrighted computer program
contained in products described in this manual may be copied, reproduced, decompiled, disassembled, or reversed engineered in any manner without express
written permission of CTI Products, Inc. The purchase of products from CTI Products, Inc. shall not be deemed to grant either directly or by implication, estoppel,
or otherwise, any license under the copyrights, patents, or patent applications of CTI Products, Inc., except for the normal non-exclusive, royalty fee license to use
that arises by operation of law in the sale of the product.
Information contained in this document is subject to change without notice and does not represent a commitment on the part of CTI Products, Inc.
No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any
purpose without the written permission of CTI Products, Inc.
Copyright 1995, CTI Products, Inc. All rights reserved.
MCN is a trademark of CTI Products, Inc. ASTRO-TAC is a trademark of Motorola, Inc. Other trademarks referenced are properties of their respective owners.
68-10844-115
IIB Hardware Reference
CTI Products, Inc.
Standard Limited Hardware Warranty
LIMITED WARRANTY. Equipment manufactured by CTI Products, Inc. is warranted to be free from defects in material and workmanship for a
period of ONE (1) YEAR from date of shipment to original purchaser. Under this warranty, our obligation is limited to repairing or replacing any
equipment proved to be defective by our inspection within one year of sale to the original purchaser. This warranty shall not apply to equipment which
has been repaired outside our plant in any way, so as to, in the judgment of CTI Products, Inc. affect its stability or reliability, nor which has been
operated in a manner exceeding its specifications, nor which has been altered, defaced, or damaged by lightning.
CUSTOMER REMEDIES. In the event of a defect, malfunction, or failure to conform to specifications established by the seller during the period
shown, the customer shall call CTI Products, Inc. to obtain a Return Authorization Number and return the product or module, shipping and insurance
prepaid. CTI Products, Inc., will then at its option, either repair or replace the product or module and return it, shipping prepaid, or refund the
purchase price thereof. On-site labor at the purchaser's location is not included in this warranty.
EQUIPMENT NOT MANUFACTURED BY CTI Products, Inc. Equipment not manufactured by CTI Products, Inc. is excluded from this
warranty, but is subject to the warranty provided by its manufacturer, a copy of which will be supplied to you upon specific written request.
NO OTHER WARRANTIES. The foregoing constitutes the sole and exclusive remedy of the buyer and exclusive liability of CTI Products, Inc.,
AND IS IN LIEU OF ANY AND ALL OTHER WARRANTIES EXPRESSED OR IMPLIED OR STATUTORY AS TO MERCHANTABILITY,
FITNESS FOR PURPOSE SOLD, DESCRIPTION, QUALITY, PRODUCTIVENESS OR ANY OTHER MATTER.
NO LIABILITY FOR CONSEQUENTIAL DAMAGES. WITHOUT LIMITING THE FOREGOING, IN NO EVENT SHALL CTI
PRODUCTS, INC. OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION,
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS
OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS) ARISING OUT OF THE USE OF OR INABILITY TO USE CTI
PRODUCTS, INC. EQUIPMENT BY PURCHASER OR OTHER THIRD PARTY, WHETHER UNDER THEORY OF CONTRACT, TORT
(INCLUDING NEGLIGENCE), INDEMNITY, PRODUCT LIABILITY OR OTHERWISE, EVEN IF CTI PRODUCTS, INC. HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR LOSSES. IN NO EVENT SHALL CTI PRODUCTS, INC.’S, LIABILITY
EXCEED THE TOTAL AMOUNT PAID BY PURCHASER FOR THE EQUIPMENT GIVING RISE TO SUCH LIABILITY.
68-10844-115
i
IIB Hardware Reference
CTI Products, Inc.
CTI Products, Inc.
1211 W. Sharon Rd.
Cincinnati, OH 45240
If you have questions about the MCN comparator display system, call us at:
IIB Hardware Reference Introduction
CTI Products, Inc.
1. Introduction
The Input/Output Interface Module (IIB) is a member of the Monitoring and
Control Network (MCN™) family of User Interface Modules. Hardware
specifications, special installation, and configuration information are described in
this manual.
The IIB module connects a parallel operator display device (such as a console) to
the MCN network. The IIB is used with the operator display device and a
Comparator I/O Module (such as a CIB or AIB) to create a comparator display
system. The comparator display system provides monitoring and control functions
for your communications system. Receiver states monitored by the IIB include
VOTE, RECEIVE, DISABLE and FAIL. Receiver functions that can be
controlled include FORCE VOTE and DISABLE.
PRODUCTS, INC.
IN
OUTNETWORK
DC IN
8
8
9
7
7
A
6
6
B
5
C
5
4
D
4
3
E
3
F
2
2
1
0
1
PWR ACT
MODULEGROUP
8
9
9
7
A
A
6
B
B
C
5
C
D
4
D
E
3
E
F
F
2
0
1
0
1 2 3 4
ON
OPTION
Figure 1 - IIB Front and Rear View
1.1 Reference Documents
1. Monitoring and Control Network System Manual
Part Number S2-60425
ERR
E1 A
RESET
J1
E1 B
CA-80023-100CA-80023-100
68-10844-115
1
IIB Hardware Reference Specifications
CTI Products, Inc.
2. Specifications
Size5.5” x 4.2” x 1.5” (140 x 107 x 38
mm)
Weight16 oz (455 gm)
Temperature0 - 50 ºC
Humidity10 - 95% non-condensing
Module Power10 - 32 Vdc / 2 Watts max.
Number of Receivers Supported8 (Link Fail feature disabled)
7 (Link Fail feature enabled)
Open Circuit Voltage (all I/O pins)
jumper E1B removed
jumper E1B installed
Inputs per Receiver
active low, pull-up to +5 or +13.8 Vdc
Input Voltage (Input and In/Out pins) -0.6 to 30 Vdc (max)
Input Current (Input and In/Out pins):
jumper E1B removed (Vin = 0 Vdc)
jumper E1B installed (Vin = 0 Vdc)
Outputs per Receiver (active low)Vote, Receive, Disable, Fail
Output Saturation Voltage (Outputs and
In/Out pins) with Iout = 100 mA
Output Pin Current (Outputs and In/Out
pins)
Maximum Power Dissipation2 Watts
Input/Output Connection50 pin Telco style
Network Connector(2) RJ-45 (1 in, 1 out)
Safety ApprovalsUL 1950
Emissions ComplianceFCC Part 15, Class A
Susceptibility ComplianceIEC 801-2
+13.8 Vdc nominal
+5 Vdc nominal
Force Vote, Disable
-720 µA max (source)
-270 µA max (source)
550 mV
150 mA max per individual pin (sink)
100 mA max per pin if all outputs are
ON.
CSA 1950
EN 60950-1992
DOC Class A
EN55022
IEC 801-3
IEC 801-4
EN50082-1
Table 1 - Module Specifications
2
68-10844-115
IIB Hardware Reference Specifications
Vp
CTI Products, Inc.
Figure 2 shows the equivalent circuits of the IIB I/O pins. The pull-up voltage Vp
by jumper E1B, located on the rear of the module.
• Vp = 13.8 Vdc with jumper E1B out
• Vp = 5.0 Vdc with jumper E1B in
HCMOS
IC
INPUT
+5V
+5V
150K
180K
22K
INPUT
Vp
22K
OUTPUT
0.1uF
0.1uF
ESD
PROTECTION
ESD
PROTECTION
30V
TRANSORB
30V
TRANSORB
Vp
22K
+5V
HCMOS
IC
INPUT
150K
0.1uF
INPUT/OUTPUT
Figure 2 - I/O Equivalent Circuit
3
ESD
PROTECTION
30V
TRANSORB
CA-80043-100CA-80043-100
68-10844-115
IIB Hardware Reference Theory of Operation
CONSOLE
CTI Products, Inc.
3. Theory of Operation
This section describes the operation of the IIB module in an MCN comparator
display system.
3.1 Comparator Status
The Comparator I/O Module (such as an AIB or CIB) accepts the VOTE,
RECEIVE, DISABLE, and FAIL receiver status indicators from the comparator.
It sends status messages to the IIB module. The IIB module controls the VOTE,
RECEIVE, DISABLE, and FAIL parallel lines of the operator interface (such as a
console).
3.2 Controlling the Comparator
The IIB module monitors the VOTE and DISABLE lines from the console. When
the console activates a VOTE or DISABLE line, the IIB module will send a
FORCE VOTE or DISABLE command to the comparator. The Comparator I/O
Module will then generate the proper FORCE VOTE or DISABLE/ENABLE
signal to control the comparator.
3.3 Associating an IIB with a Comparator I/O Module
When an IIB is installed into a system, you need to configure the IIB with the
address of the Comparator I/O Module it will be operating with. Section 6.1
describes how to enter this extra address. By having the address of the
Comparator I/O Module, the IIB knows how to route its control messages for
FORCE VOTE and DISABLE over the MCN network.
3.4 System Example
Figure 3 shows an example comparator display system using the IIB module with a
console for the operator station.
CONSOLE
ELECTRONICS
IIB
MCN NETWORK
Figure 3 - IIB System Example
COMPARATOR
I/O
MODULE
COMPARATOR
CA-80034-100CA-80034-100
When the comparator detects that a receiver is active, it sends a RECEIVE
command followed by a VOTE command (if that receiver becomes voted). The
Comparator I/O Module processes these commands and sends them to the IIB.
The IIB then activates the VOTE and RX outputs for that receiver.
68-10844-115
4
IIB Hardware Reference Theory of Operation
CONSOLE
CTI Products, Inc.
If the comparator detects that a receiver has failed, it sends a FAIL command to
the Comparator I/O Module. Again, the Comparator I/O Module sends this FAIL
command to the IIB so that the user can see that the receiver has failed.
From the console, the user can generate FORCE VOTE or DISABLE commands
for each receiver in the system. The IIB detects these active signals and sends
them to the Comparator I/O Module, which then controls the comparator.
3.5 Receiver Banks
The IIB module is designed to operate with a maximum of 8 receivers. This group
of 8 receivers is called a bank. If the Comparator I/O Module supports more than
8 receivers (more than 1 bank of receivers), then multiple IIBs are required to
monitor and control these additional banks. Section 4 describes how the IIB is
configured to select the bank of receivers being monitored.
For example, the system shown in Figure 4 shows an ASTRO-TAC™ Comparator
that supports a total of 13 receivers. The AIB Comparator I/O Module separates
the 13 receivers into two banks of 8 receivers.
IN
OUT
T
AIB
ASTRO-TAC
COMPARATOR
13 RECEIVERS
CA-80044-100CA-80044-100
CONSOLE
ELECTRONICS
IIB
BANK 0
IIB
BANK 1
P/S
OUT
IN
OUT
IN
T
Figure 4 - Multiple IIB System Example
Two IIBs provide support for the 13 receivers of the ASTRO-TAC™ Comparator.
The AIB module divides the 13 receivers into bank 0 (receivers 1 through 8) and
bank 1 (receivers 9 through 13). Each IIB has to be configured to operate with
one of the banks of the AIB. The first IIB would be configured to operate with
bank 0 of the AIB. The other IIB would be configured to operate bank 1 of the
AIB. This configuration is done using the option switches on the front of the IIB.
Refer to section 4 for details. With this configuration, the console will be able to
monitor and control receivers 1 through 13 of the comparator. The Link Fail
feature of the second IIB (configured for bank 1) can be enabled to monitor the
status of the AIB to ASTRO-TAC™ Comparator communication link as well as the
MCN network communications link. Refer to section 7.1. Because the second
IIB only monitors and controls receivers 9 through 13 (a total of 5 receivers) of
the ASTRO-TAC™ Comparator, its highest receiver is unused and therefore
available to display Link Fail status.
68-10844-115
5
IIB Hardware Reference Theory of Operation
CTI Products, Inc.
3.6 Parallel I/O Signals
The IIB provides two input/output lines per receiver (VOTE and DISABLE) that
allow both monitoring and control of the signal. Two output only lines per
receiver (FAIL and RECEIVE) are also provided. None of these I/O lines are
latched in the IIB. In the console, the VOTE switch or button should be
momentary, and the DISABLE switch or button should be latched.
Because the VOTE and DISABLE lines are input/output lines, when the VOTE or
DISABLE input is driven by the console, any device tied to that line will also be
driven (an LED for example).
3.7 Bi-directional Lines
Because the console VOTE and DISABLE lines are bi-directional, the console’s
LEDs will be lit if the console outputs are active. Because of this, the console
could still indicate a DISABLE or VOTE on a receiver even if there is a problem
in the network cabling or the Comparator I/O Module.
This is one reason for using the Link Failure Reporting of the IIB (see section 7.1,
Link Failure Reporting). Using this feature, the operator can be warned when the
comparator is not communicating with the Comparator I/O Module (provided the
Comparator I/O Module supports Link Fail reporting) or when the IIB is not
communicating with the Comparator I/O Module.
68-10844-115
6
IIB Hardware Reference Theory of Operation
CONSOLE ELECTRONICS
IIB J1
CTI Products, Inc.
3.8 Example Connections to a Console
Figure 5 shows how an IIB may be connected to a console. Notice that the VOTE
and DISABLE lines between the IIB and the console are bi-directional.
+V
VOTE
MOMENTARY
+V
RX
+V
+V
DISABLE
LATCHING
FAIL
CA-80049-100CA-80049-100
Figure 5 - IIB Connections to a Console
68-10844-115
7
IIB Hardware Reference Option Switches
CTI Products, Inc.
4. Option Switches
Three sets of option switches are provided for module configuration. The module
must be power cycled or reset after these switches are set so that the options will
take effect. Table 2 describes the option switches and shows the factory defaults.
SWITCHDESCRIPTIONDEFAULT
GROUPunit address setting
refer to the MCN System Manual
MODULEunit address setting
refer to the MCN System Manual
OPTION
position 1receiver bank selector 1 (see Table 3)DOWN
position 2receiver bank selector 2 (see Table 3)DOWN
position 3receiver bank selector 3 (see Table 3)DOWN
position 4unit address selectorDOWN
Table 2 - IIB Option Switches
00
0
The Group and Module selector switches are used to set the unit address during
module installation.
The unit address selector switch (OPTION switch position 4) is only used at
installation time. Refer to section 6, Special Installation Instructions, for a
description of this switch. For normal operation, this switch must be in the
DOWN position.
An IIB can monitor 8 receivers when the Link Fail feature is disabled or 7
receivers when the Link Fail feature is enabled (one receiver bank). Option
switches 1 through 3 allow the IIB to monitor any receiver bank supported by the
Comparator I/O Module. The settings for these switches is shown in Table 3. If
the Link Fail feature is enabled, the last receiver on an IIB is unusable. The IIB
will not provide monitoring and control functions for that receiver.
Bank Option Switch Position
1 2 3
0DOWN DOWN DOWN1 through 8
1UP DOWN DOWN9 through 16
2DOWN UP DOWN17 through 24
3UP UP DOWN25 through 32
4DOWN DOWN UP33 through 40
5UP DOWN UP41 through 48
6DOWN UP UP49 through 56
7UP UP UP57 through 64
Receiver
Numbers
Table 3 - Receiver Bank Selectors
8
68-10844-115
IIB Hardware Reference Option Switches
E1 A
CTI Products, Inc.
When the IIB is used with a Comparator I/O Module that supports only 8
receivers, such as a CIB, bank 0 will always be used.
Figure 6 shows the configuration of the two jumper options available on the rear
of the IIB. These jumpers should be installed at system installation time with
power removed from the IIB.
E1 B
CA-80024-100CA-80024-100
Figure 6 - Jumper Options
Jumper E1A is located across the top 2 terminals of the 6 pin terminal block. This
jumper must normally be installed. It is only removed for factory test.
Jumper E1B is located across the left side middle and bottom terminals of the 6
pin terminal block. Set this jumper to match the needs of your operator interface
station.
The remaining 2 terminals of the block are unused.
JumperFunctionDefault
E1AIn to enable output RX 7.
IN
Out to disable output RX 7.
E1B
Vp Set
In for inputs pulled up to +5 Vdc.
Out for inputs pulled up to +13.8 Vdc.
OUT
Figure 7 - Jumper Options Description
Because most installations require the pullup voltage to be +13.8 Vdc, no jumper
is provided with the unit for the E1B jumper terminals. If you have an application
that requires the pullup voltage to be set to +5 Vdc, you can order an additional
jumper by calling CTI Products Inc. and ordering part number 27-10351.
68-10844-115
9
IIB Hardware Reference Connectors
CTI Products, Inc.
5. Connectors
The NETWORK IN/OUT ports on the front of the IIB are used to connect the
IIB with other MCN modules. These ports carry both the network data signals as
well as DC power for power distribution with other modules. . Table 4 gives the
pinout for these connectors. Figure 8 shows the location of pin 1 for each port.
PRODUCTS, INC.
IN
PIN 1
NETWORK
OUT
DC IN
CA-80068-100
Figure 8 - Network IN/OUT Ports
PinFunction
1DATA +
2DATA 3+ POWER
4No Connect
5No Connect
6- POWER
7- POWER
8+ POWER
Table 4 - Network Connector Pinout
The DC IN port provides the primary power connection to the module. Power is
distributed through the NETWORK OUT connector to provide power to the
NETWORK IN connector of the MCN unit it is connected to. Each power
supply can power up to four units total. See reference 1 for complete details of
connections to the network and DC IN connectors.
Connector J1 provides the discrete I/O for the user interface signals. Table 5 gives
the pinout for this connector. Figure 9 describes the functions of the I/O signals.
All inputs and outputs are active low.
68-10844-115
10
IIB Hardware Reference Connectors
CTI Products, Inc.
SignalDirectionDescription
VOTEInput/OutputOutput activated when comparator votes that receiver.
Ground input to force vote a receiver.
RX OutputActivated when comparator detects a valid signal on
the receiver.
DISInput/OutputOutput activated when receiver is disabled by
comparator.
Ground input to disable the receiver.
FAILOutputActivated when receiver failure is detected by the
comparator.
Figure 9 - I/O signal descriptions
11
68-10844-115
IIB Hardware Reference Connectors
CTI Products, Inc.
Table 6 - IIB Connector J1 Pinout in ‘Punch Block’ Order
13
68-10844-115
IIB Hardware Reference Special Installation Instructions
CTI Products, Inc.
6. Special Installation Instructions
6.1 Unit Address Setting
An IIB must be programmed with two unit addresses:
1. the address of the Comparator I/O Module it will operate with
2. the IIB’s own address
You only need to perform this programming once, at installation time. These
addresses are stored in non-volatile memory so the only reason that you would
have to repeat this step is if you changed the unit address of the Comparator I/O
Module or if you replaced the IIB module.
Before programming the address information into the IIB, determine the unit
addresses of all the MCN modules in the system, following the guidelines in the
Address Planning planning section of the Monitoring and Control Network
System Manual (reference 1).
Valid ranges for the Group and Module switches are:
• Group number = 00 through FE
• Module number = 0 through F
The steps for programming the unit address of the Comparator I/O Module are:
StepAction
1Determine the unit addresses of all the MCN modules in the system.
2Apply power to the IIB.
3Place OPTION switch 4 in the UP position.
4Set the Group and Module switches to the unit address of the
Comparator I/O Module (from step 1) that this IIB will operate with.
5Press the RESET button on the IIB.
6The ERR LED will turn on and remain on.
7Place OPTION switch 4 in the DOWN position.
8Set the Group and Module switches to the unit address of this IIB
(its own address from step 1).
9Press the RESET button on the IIB.
10The ERR LED will turn on momentarily and then turn off.
After you complete these steps, connect the IIB to the Comparator I/O Module.
Apply power to the Comparator I/O Module and within approximately three
seconds, the ACT LED of the IIB should turn on and the ACT LED of the
Comparator I/O Module should turn on or blink. If the ACT LEDs turn on, the
IIB has been correctly programmed with the unit address of the Comparator I/O
Module. If the ACT LEDs remain off, verify your unit switch settings and repeat
14
68-10844-115
IIB Hardware Reference Special Installation Instructions
CTI Products, Inc.
the unit address programming steps.
15
68-10844-115
IIB Hardware Reference Special Installation Instructions
CONSOLE
CTI Products, Inc.
For example, Figure 10 shows a system with a single IIB and Comparator I/O
Module. The following steps show how the system might be setup, using the
following address assignments:
• IIB address is Group 80, Module 0
• Comparator I/O Module is Group 00, Module 0
StepAction
1Connect the network cable between the IIB NETWORK OUT port
and the Comparator I/O Module’s NETWORK IN port.
2Power on both the Comparator I/O Module and the IIB.
3On the Comparator I/O Module, set the Group switch to 00 and the
Module switch to 0.
4Reset the Comparator I/O Module.
5On the IIB, place OPTION switch 4 in the UP position.
6On the IIB, set the Group switch to 00 and the Module switch to 0.
This is the address of the Comparator I/O Module it will work with.
7On the IIB, set the receiver bank selector switches.
7Press the RESET button on the IIB.
8The IIB’s ERR LED will turn on and remain on.
9On the IIB, place OPTION switch 4 in the DOWN position.
10On the IIB, set the Group switch to 80 and the Module switch to 0.
This is the IIB’s own address.
11Press the RESET button on the IIB.
12The ERR LED will turn on momentarily and then turn off.
13After a couple of seconds, the ACT LED on the IIB should turn ON
and the ACT LED of the Comparator I/O Module should turn ON
or begin blinking.
If this does not occur, repeat the process or consult the
troubleshooting guide in section 10.
CONSOLE
ELECTRONICS
IIB
MCN NETWORK
Figure 10 - Unit Address Programming Example
16
COMPARATOR
I/O
MODULE
COMPARATOR
CA-80034-100CA-80034-100
68-10844-115
IIB Hardware Reference Special Features
CTI Products, Inc.
7. Special Features
7.1 Link Failure Reporting
The IIB has a selectable option to show communication link failures between the
IIB and its Comparator I/O Module (network link failures) or between the
Comparator I/O Module and the comparator (comparator link failures). With this
option enabled, the IIB will always report network link failures. Comparator link
failures will only be reported if the Comparator I/O Module implements Link
Failure Reporting. Refer to the hardware reference manual of the Comparator I/O
Module being used to see if it supports this feature (for example, Link Failure
Reporting is supported in the AIB module, but not in the CIB module).
This option is enabled by grounding connector J1 pin 4, the Link Fail Enable
input, and then resetting the IIB. When this input is grounded, the IIB no longer
provides monitor and control of its receiver 8 I/O lines (J1 pins 26, 27, 28 and 30).
Instead, the Link Fail output (connector J1 pin 30) is used to show the status of
communication links. If this output is HIGH, all communications are OK between
the IIB and its Comparator I/O Module and between the Comparator I/O Module
and the comparator. If either of these communication links break (a cable is
disconnected or a module is turned off), then this output will be driven LOW by
the IIB to indicate the link failure.
17
68-10844-115
IIB Hardware Reference Mounting
CTI Products, Inc.
8. Mounting
Refer the reference 1, section Mounting Options, for details about mounting the
IIB module.
CAUTION
Make sure that any mounting screws used to secure unit to a bracket do not
protrude into the unit’s enclosure more than 1/8 inches from the bottom surface of
the unit.
Using a larger screw that touches the pc board inside the unit may damage the unit
when it is powered. Doing so will void the unit’s warranty.
18
68-10844-115
IIB Hardware Reference Connecting an IIB to a CEB
CTI Products, Inc.
9. Connecting an IIB to a CEB
The following example shows how you would connect an IIB to Motorola’s CEB
(Central Electronics Bank) in a comparator display system. Figure 11 shows what
this system looks like.
CEB
16 I/O
A
16 I/O
B
RX1-4
RX5-8
IIB
T
OUT
IN
T
IN
COMPARATOR
OUT
MCN
I/O
MODULE
P/S
COMPARATOR
CA-80029-100CA-80029-100
Figure 11 - IIB / CEB Connection Example
The IIB connects to the CEB through two 16 I/O cards (cards A and B) Each 16
I/O card can handle only 4 receivers. The CEB must be configured so that the 16
I/O cards operate as comparator display boards. Table 7 shows the cross
connections needed between the IIB and the 16 I/O cards. Once these
connections are made, you need to install jumper JU6 through JU33 on each 16
I/O card.
1
19
68-10844-115
IIB Hardware Reference Connecting an IIB to a CEB
CTI Products, Inc.
* Signals for receiver 8 are active only if the Link Fail Enable (J1 pin 4) is open
(Link Fail feature is disabled). If J1 pin 4 is grounded, J1 pin 30 becomes a Link
Fail output and J1 pins 26, 27 and 28 become unused pins.
68-10844-115
20
IIB Hardware Reference Troubleshooting
CTI Products, Inc.
10. Troubleshooting
This table is a list of troubleshooting tips specific to the IIB module. For
additional troubleshooting tips, refer to the troubleshooting section found in the
Monitoring and Control Network System Manual, reference 1.
Due to the high percentage of surface-mount components the IIB is treated as a
field replaceable unit. If any system problems are the result of a malfunctioning
IIB unit, the entire unit must be replaced and returned for repair.
PROBLEMCAUSE
ERR LED is ONVerify that the module’s Group and Module numbers are valid.
Reprogram the unit address of the Comparator I/O Module that the IIB is
connected to. Also, verify that this is a valid unit address. Refer to section
6.1 for a description of this procedure.
Receiver 8 is not
working properly
Link Failure
Reporting is not
working properly
Link Fail Enable
(J1 pin 4) is
grounded and the
Link Fail output
(J1 pin 30) is
active.
Verify that option switch 4 is in the DOWN position.
Verify that the Link Fail Enable pin (J1, pin 4) is not tied to ground when the
module is reset.
Verify that the Link Fail Enable pin (J1, pin 4) is tied to ground when the
module is reset.
If comparator link failures are not being reported, verify that the Comparator
I/O Module supports the Link Fail reporting feature.
Verify that the network cable between the IIB and the Comparator I/O
module is properly connected and that both modules are communicating
(their ACT LEDs are on).
Verify that the cable between the Comparator I/O Module and the
comparator is properly installed and that the Comparator I/O Module is
communicating with the comparator (refer to the troubleshooting section of
the Comparator I/O Module).
21
68-10844-115
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