OPERATING MANUAL
SRX 2150/128x1
SWITCHING SYSTEM
US PATENTS 4,935,709 AND 5,481,073
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Quintech Electronics and Communications Inc.
SRX Series Switching System
PAGE
1.0 INTRODUCTION............................................................................................................................1
2.0 MODULES .......................................................................................................................................2
3.0 INSTALLATION.............................................................................................................................3
RF Connections..................................................................................................................................3
Control Connections ..........................................................................................................................3
Power Connections ............................................................................................................................4
4.0 OPERATION ...................................................................................................................................5
4.1 Monitor and Control....................................................................................................................5
4.1.1 Changing a Crosspoint ......................................................................................................6
4.2 Configuring System Options .......................................................................................................7
4.2.1 Configuring Controller Parameters ...................................................................................7
4.2.1.1 Setting Up the System ..........................................................................................8
Matrix Size ...........................................................................................................8
Model....................................................................................................................9
Module Size..........................................................................................................9
4.2.1.2 Upgrading the SRX’s Firmware .......................................................................10
4.2.2 Configuring Interface Options.........................................................................................10
4.2.2.1 Serial Configuration ...........................................................................................10
Address ...............................................................................................................11
Mode...................................................................................................................12
Terminate RS485................................................................................................12
Quintech Electronics and Communications Inc.
SRX Series Switching System
4.2.2.2 Ethernet Configuration .......................................................................................13
Static IP Configuration .......................................................................................13
DHCP .................................................................................................................14
QEC Port # .........................................................................................................14
Password.............................................................................................................15
4.3 Ethernet Control ........................................................................................................................15
4.4 Serial Port Control.....................................................................................................................16
5.0 TROUBLESHOOTING ................................................................................................................17
Quintech Electronics and Communications Inc.
SRX Series Switching System
Appendix A – Technical Specifications
x Electrical
x Mechanical
x Protocol
Appendix B – Test Procedure
Appendix C – Performance Plots
Appendix D – Setting the SRX Expansion Module Address Switches
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Quintech Electronics and Communications Inc.
SRX Series Switching System
Rev. A
1.0 INTRODUCTION
Thank you for purchasing an SRX Expandable Routing Switch. Quintech’s SRX series
switches are based on the same technology as our popular SRM Series Modular Programmable
RF Switches. They were developed to address the increasing need for expandable RF switching
in telecommunication network signal processing centers and are equally suitable for audio/video,
baseband, data, IF, and RF switching requirements.
The SRX is perfect for centralized test and measurement applications in networks that are
monitoring large numbers of RF signals. Each SRX system is compatible with most monitoring
and control systems and can be expanded in 16x1 modules up to a maximum capacity of 128x1.
Control of the SRX occurs from a front panel keypad or remotely via computer (serial or
TCP/IP).
The excellent RF performance of the SRX is achieved through proprietary technology developed
by QEC.
Each system is supplied with a control unit. From this unit, an operator may make RF signal
routing changes or check to see the routes currently defined. The control unit is also supplied
with serial (RS-232 and RS-422/485) and Ethernet (10BaseT TCP/IP) control ports to allow
remote control of the SRX system.
This operating manual attempts to familiarize you with the different capabilities and features of
SRX systems.
Please read all instructions before installing or operating.
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Quintech Electronics and Communications Inc.
SRX Series Switching System
Rev. A
2.0 MODULES
Two types of modules are used to configure an SRX system: an MCP 128 (8x1) controller and a
16x1 switching module. Every SRX system is comprised of one controller and 1 or more
switching modules. A minimal SRX switching system consists of a single controller and one
switching module.
The MCP 128 controller provides master control capability via the front panel keypad/LCD
display or computer interface (serial or TCP/IP). The unit receives commands from the keypad
or computer and controls the individual switching modules. From this unit, an operator can
make routing changes or check to see the paths currently configured.
Q-SWITCH
MCP 2150 SERIES
SIGNAL ROUTING SWITCH
ETHERNET
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MCP 128 (8x1) Controller
If no 16x1 switching modules are added to the SRX system, the controller can be used as a
standalone 8x1 switching module.
The SRX Switching Module is a 16x1 unit that utilizes solid state switching elements to provide
seamless switching speeds (nanoseconds). Up to eight switching modules may be combined in a
single SRX system. The total number of switching modules required for a system is equal to
the total number of system inputs divided by 16. Every switching module is equipped with two
inter-module serial ports (“CONTROL-IN” and “CONTROL-OUT”) that are used for
communication with other SRX modules.
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SRX Series Switching System
Rev. A
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3.0 INSTALLATION
The SRX is very easy to install. Each module is 1RU (1.75”) in height and is easily installed in
any standard rack, using four screws.
RF Connections
All RF connections are made by connecting source(s) to the input(s) and destination(s) to the
output(s). When connecting, be sure that the pin at the center of the RF connector is properly
inserted into the F connector on the units. A bent pin will not pass the RF signal correctly.
NOTE: All inputs and outputs are DC blocked. You cannot send power through the SRX
to power other devices.
Control Connections
Before powering up the units, make sure all of the control cables are properly installed. All
SRX modules should be daisy-chained together, with the controller unit occupying the first
position in the chain. Connect the CONTROL OUT port of the controller to the CONTROL IN
port of the first 16x1 module in the chain. The CONTROL OUT port of that module connects to
the CONTROL IN port of the next 16x1 module, etc. The last module in the chain will have an
unused 9-pin connector labeled CONTROL OUT.
Note that the maximum control cable length that can exist between SRX modules is 6 feet.
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Quintech Electronics and Communications Inc.
SRX Series Switching System
Rev. A
If you are using a computer to control the SRX, you can use a direct serial connection or a
10BaseT Ethernet connection. For serial control, connect a serial cable (RS-232 or RS-422/485)
from the computer to the 9-pin SERIAL port on the rear panel of the controller module. The
connector is shared for both RS-232 and RS-422/485. No NULL MODEM or crossover cable is
needed when connecting an RS-232 cable. For Ethernet connections, connect the controller to a
network port or router via the Ethernet port using a standard cable. You can also connect
directly to the computer’s network port, but this requires a crossover cable.
Power Connections
To power up each unit, connect it to an appropriate AC power source. Most units will be
equipped with a 2-amp slo-blo AC fuse. The AC/DC power supplies used in the SRX are
extremely reliable, and provide short circuit protection.
Before powering up the controller module, power up all other SRX modules first.
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SRX Series Switching System
Rev. A
4.0 OPERATION
The SRX Series Matrix Switching System can be controlled locally via the front panel
keypad/LCD screen or remotely through the serial port or Ethernet port on the rear panel using
the software provided with all standard SRX modules. If desired, all three methods can be used
simultaneously. Firmware updates can be downloaded via the Serial and Ethernet ports.
The front panel keypad and LCD screen are used to set various operating parameters and to
monitor and control switch settings. The main menu has two choices: 1. Monitor & Control and
2. System Options.
1. Monitor & Control
2. System Options
Main Menu
4.1
Monitor and Control
Press 1 to choose local monitor and control. The current switch settings will be displayed as
illustrated below.
Status
Port
np
1
F1=Change
F4=Exit
Monitor & Control Screen
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Quintech Electronics and Communications Inc.
SRX Series Switching System
Rev. A
To view the status of an output or input channel, type in the output/input number or use the scroll
arrows to scroll up or down respectively. One, two, or three digits may be typed. For example,
Output 1 may be represented as 1, 01, or 001. The number will be entered automatically about 1
second after no more digits are entered. Press F4 to exit back to the main menu or F1 to change
the input connected to the currently displayed output.
4.1.1
Changing a Crosspoint
To change the current input (or output) port, press F1 to enter the Change Port Screen. The
menu heading will revert to “Change” and the cursor will move to the Port field.
Change np
F1=Enter
Port
F4=Exit
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Change Port Screen
Select the new input (or output) port by either scrolling or by typing in the desired port number.
Press F1 to enter the change. To return to the main menu without making any changes, press F4.
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SRX Series Switching System
4.2
Rev. A
Configuring System Options
From the Main Menu, press 2 to access the System Options Menu. The System Options Menu
enables you to set and modify basic configuration parameters. It also enables you to configure
the SRX’s communications interface.
1. Configuration
2. Interface Options
F4=Exit
System Options Menu
Pressing 1 will display the Configuration Menu. To prevent unintentional changes to the SRX’s
configuration, the Configuration Menu is password protected. You must enter the correct 3-digit
password and press F1 before access to the Configuration Menu is granted. The code for SRX
series units is 732. Pressing 2 will display the Interface Options Menu.
NOTE: Do not alter any of the configuration menu items unless directed by Quintech.
4.2.1
Configuring Controller Parameters
The Configuration Menu enables you to set various controller configuration parameters or
upgrade the unit’s firmware via the serial port.
1. System Setup
2. Load Firmware
F4=Exit
Configuration Menu
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SRX Series Switching System
4.2.1.1
Rev. A
Setting Up the System
The system configuration parameters consist of the SRX size and model number. The
configuration settings are set at the factory and should not be changed unless directed by
Quintech. Altering the configuration can prevent the SRX from operating correctly.
1. Matrix Size
3. Module Sizes
2. Model
F4=Exit
System Setup Menu
Matrix Size
The Matrix Size screen allows the specified size of the SRX to be changed. Enter a number
between 8 and 128 to indicate the number of SRX input (or output) ports. Press F1 to enter the
change. To return to the previous menu without making any changes, press F4. If the MCP is
being used as a standalone switch with no expansion modules, this parameter is set to the number
of input ports on the MCP.
# of Ports:
16
F1=Enter
F4=Exit
Typical Matrix Size Screen
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Quintech Electronics and Communications Inc.
SRX Series Switching System
Rev. A
Model
The model number is included as part of the system’s firmware identification in accordance with
the protocol outlined in Appendix A. The control system is not affected by the model number.
System expansion requires no change of the model number.
Model: 2150
F1=Enter
F4=Exit
Typical Model Number Screen
Module Size
Configuring the SRR module size involves specifying the number of inputs per SRX
(option 1) and the number of input rows/SRO (option 2).
1. SRR Module Size
2. SRO Module Size
F4=Exit
Module Size Menu
The SRR module size must be set to the number of inputs on each SRX module. The SRO
module size must be set to the number of inputs on the MCP. The factory default is 8. The
default is 16 for a system with 16x1 expansion modules. If the MCP is used as a standalone
switch with no expansion modules, the factory default is 1.
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Quintech Electronics and Communications Inc.
SRX Series Switching System
4.2.1.2
Rev. A
Upgrading the SRX’s Firmware
Pressing 2 from the Configuration Menu displays the Load Firmware Screen. The Load
Firmware Screen enables you to upgrade the internal firmware level of the SRX unit. Pressing
F1 will put the controller in a special firmware download mode. The new firmware can then be
downloaded via the serial port. This process requires the Rabbit Field Utility (RFU) v 2.25 to be
executed on the PC from which the firmware is being transferred. Once the RFU shows that the
process is complete, the SRX must be power cycled to return to normal operation.
Press F1 to set
Firmware download
“Control In” as
F4=Exit
Load Firmware Screen
4.2.2
Configuring Interface Options
The Interface Options Menu allows you to configure either serial communication or Ethernet
settings.
1. Serial
2. Ethernet
F4=Exit
Interface Options Menu
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SRX Series Switching System
Rev. A
4.2.2.1 Serial Configuration
Whenever “Serial” is selected, you will be able to configure both the address of the SRX and
the type of serial interface (RS-232, RS-485, or RS-422).
1. Address
3. Terminate RS485
2. Mode
F4=Exit
Address Menu
Address
The Address Screen allows you to set a 2-byte hexadecimal address for the switch. Addresses
can be set from 00 to FF hexadecimal. The unit only responds to commands sent over the serial
bus that contain a matching address. The only exception is the address “FF” which serves as the
“broadcast” address. Any and all units will respond to a command containing FF as the address,
regardless of its current address. For this reason, FF should not normally be used as a unit
address. To change the address, use the up and down scroll arrows until the desired address is
displayed, then press F1 to select the new address. The specified address is used when sending
commands to the control unit from a computer.
Current Address
0
New Address np
1A
F1=Enter
F4=Exit
Address Screen
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SRX Series Switching System
Rev. A
Mode
The Mode Screen enables you to specify whether an RS-232, RS-485, or RS-422 serial interface
will be used to control the serial communications.
Mode: RS232
2=RS485
1=RS232
F4=Exit
3=RS422
Mode Screen
Terminate RS485
The Terminate RS485 Screen allows you to enable or disable termination on the serial port.
Only one device at the end of an RS485 cable should have termination enabled.
1. Control In: Off
F1=On F2=Off
2. Remote Ports: Off
F4=Exit
Terminate RS485 Screen
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Quintech Electronics and Communications Inc.
SRX Series Switching System
Rev. A
4.2.2.2 Etheret Configuration
The Ethernet configuration screen controls the static IP configuration for Telnet (port 23) and the
auxiliary QEC port. The QEC port allows you to send STX/ETX formatted packets to the SRX.
Whenever “Ethernet” is selected in the Interface Options menu, you will be able to set the IP
configuration (option 1), enable/disable the DHCP server (option 2), and configure the Ethernet
port (option 3). You will also be able to reset the access password (option 3).
1. IP Configuration
3. QEC Port
2. DHCP On/Off
F4=Exit
Static IP Configuration
The IP Configuration screen allows you to set the IP address, network, and default gateway
address for the SRX. Contact your network administrator for the correct values to use for these
parameters. Note that if DHCP is on, the settings obtained from the DHCP server will override
the static IP configuration.
IP :192.168.000.249
GW :192.168.000.001
Msk:255.255.255.000
F1=Enter
F4=Exit
IP Configuration Screen
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Quintech Electronics and Communications Inc.
SRX Series Switching System
Rev. A
DHCP
The DHCP Screen enables you to enable or disable the use of a DHCP server for obtaining IP
address information. When set to ON, the IP address of the SRX is dynamically assigned by
the DHCP server. Note that the IP address assigned in this manner will override any IP address
that may have been specified via the IP Configuration Screen. When set to OFF, the static IP
address that is specified in the IP Configuration Screen will be used.
1.DHCP
:Off
F1=On F2=Off
F4=Exit
DHCP Screen
QEC Port #
The Port screen allows you to configure the port number for the QEC port access. Contact your
network administrator for the correct values to use for this parameter. Use the scroll keys to
scroll the port number up or down until the desired port number is displayed. Press F4 to exit or
F1 to change the port number.
Current Port
New Port
np
9100
F1=Enter
9100
F4=Exit
Port Screen
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SRX Series Switching System
Rev. A
Password
The Password Screen enables you to reset the QEC port access password to the Quintechspecified default. Press F4 to exit or F1 to reset the password.
Reset password
F1=Enter
to “Quintech”
F4=Exit
Password Screen
4.3
Ethernet Control
The SRX has a 10BaseT Ethernet port and supports TCP/IP. All commands are sent to the
configured IP address and port. The command protocol for controlling the switch is provided in
Appendix A
The same command protocol is used for control over the Ethernet QEC port and the serial port.
Since the same command formats are used, the command packet will contain a serial address.
This address must match the serial address of the SRX or the packet will be rejected, even
though the address is unnecessary when the command is sent over TCP/IP. To avoid any
problems, commands are sent over TCP/IP should use the broadcast address “FF” hexadecimal.
Please note that SNMP is not currently implemented.
Connecting the SRX via Telnet opens a Telnet console window. From the console window,
you can change the configuration or issue commands. The commands issued through the Telnet
window do not use a serial address or STX/ETX packet formatting.
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SRX Series Switching System
4.4
Rev. A
Serial Port Control
The SRX has a standard DB-9 serial input connector on the back panel. This connector is
shared for both RS-232 and RS-422/485 interfaces. The serial port parameters are fixed at 9600
baud, 8 data bits, no parity, and 1 stop bit (8N1). No NULL MODEM or crossover cable is
required on this port. The command protocol for controlling the switch is provided in
Appendix A.
The RS-232 pin out is as follows:
The RS-422/485 pin out is as follows:
1 – Not Used
2 – TXD (transmit data)
3 – RXD (receive data)
4 – Not Used
5 – GND (signal ground)
6 – Not Used
7 – Not Used
8 – Not Used
9 – Not Used
1 – NC
2 – NC
3 – Non-Inverting Transmit
4 – Non-Inverting Transmit
5 – NC
6 – Inverting Transmit
7 – NC
8 – NC
9 – Inverting Receive
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SRX Series Switching System
Rev. A
5.0 Troubleshooting
This section has been written to help eliminate operator error. It does not describe how to repair
damaged equipment.
The control connections are properly connected, yet the system is not communicating.
It is possible that the system needs to be biased or terminated. Refer to Appendix A.
The front panel LED/LCD is not lit.
This indicates the unit is not receiving power. Check to see if the power switch is in ON. Make
sure that the AC cables are properly connected. Check the fuse located just above the power
cord. Verify that the AC source is available.
The power supply LED is on but the LCD is not.
Contact Quintech for service.
No signal is passing at all. The connection is shown as being made but no switch occurred.
First, be certain that all coaxial cables are properly connected, and that all control cables are
connected and in good working conditioning. Type in the desired path again.
Type in a different path to verify that the units are switching. If the units are switching, verify
that the signal you requested is actually there (the SRX system is DC blocked and will not allow
receivers to power LNBs). It is useful to monitor the system with some type of analyzer.
Make sure that the SRX routing is properly configured. The SRX will only switch up to the
set maximum size. If the controller unit is configured to utilize a larger size than is physically
available, it will show routing crosspoints that are not physically available.
The unit does not remember the previous switch settings/switch size after power has been
removed and restored.
Contact Quintech for service.
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SRX Series Switching System
Rev. A
The SRX will not respond to protocol commands on the Serial Port.
Make sure that the address in the commands being sent matches the serial address set for the
SRX. Check that the serial interface mode (RS-232 or RS-485) is correct and that the serial
cable from the computer is connected to the CONTROL IN DB-9 connector port on the back
panel. If you are using RS-232, make sure that no null modem is being used in the control path.
The SRX will not respond to protocol commands on the Ethernet QEC Port.
Make sure that the serial address in the commands being sent is either set as “FF” or matches the
serial address set for the SRX. Make sure that the SRX IP address matches the target address
used by the control computer. Make sure that the control computer is sending the commands to
port 9100. Make sure that the netmask and/or gateway are correctly set for your network. If the
SRX is connected directly to the network port of another computer, make sure that a crossover
cable is being used. If the SRX is connected to a router, make sure that a standard cable is being
used, that the router detects the connection to the SRX, and that the router is connected to the
same network as the control computer.
The signal is passing at a low level.
Using appropriate equipment, check the signal level. If it is below specifications, contact the
factory.
The SRX will not connect using Telnet.
Make sure that another Telnet session is not currently open. Only one Telnet session at a time is
allowed.
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Quintech Electronics and Communications Inc.
SRX Series Switching System
Rev. A
I am a qualified technician and would like to try to fix a problem myself.
A warranty covers all units. QEC, or a representative of QEC, should make the required repairs.
Removing any part of the chassis will void the warranty. Additionally, attempting to repair a
unit could be dangerous.
There is a lot of crosstalk between the signals.
It may be necessary to “balance” your signal levels. Leveling the signals (attenuating stronger
signals, amplifying weaker signals) ensures that all signals will be passing at approximately the
same level.
For additional information or technical support please contact QEC.
Toll Free: (800) 839-3658
Fax: (724) 349-1412
Email: info@qecinc.com
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ETHERNET
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MCP 2150 SERIES
SIGNAL ROUTING SWITCH
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SRX MATRIX SWITCHING SYSTEM
UNIT ARCHITECTURE
INFORMATION HEREIN IS PROPRIETARY TO:
QUINTECH ELECTRONICS AND COMMUNICATIONS INC.
INDIANA, PENNSYLVANIA 15701
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AUTORANGING
100-240 VAC 50/60 Hz
2 AMP
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RF OUTPUT
SRX
RF & CONTROL CONNNECTIONS
INDIANA, PENNSYLVANIA 15701
INFORMATION HEREIN IS PROPRIETARY TO:
QUINTECH ELECTRONICS AND COMMUNICATIONS INC.
CONTROL INTERCONNECTIONS
RF MODULE INTERCONNECTIONS
COMPUTER CONTROL CONNECTIONS
RF OUTPUT
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AUTORANGING
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ADDING THIS MODULE PROVIDES 32x1
AUTORANGING
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ADDING THIS MODULE PROVIDES 48x1
AUTORANGING
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2 AMP
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OUTPUT
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ADDING THIS MODULE PROVIDES 64x1
AUTORANGING
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OUTPUT
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ADDING THIS MODULE PROVIDES 80x1
AUTORANGING
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OUTPUT
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ADDING THIS MODULE PROVIDES 96x1
AUTORANGING
100-240 VAC 50/60 Hz
2 AMP
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2
3
4
5
6
7
8
9
MODULE 7
AUTORANGING
100-240 VAC 50/60 Hz
2 AMP
MODULE 8
11
ADDING THIS MODULE PROVIDES 16x1
OUTPUT
10
11
12
13
14
15
16
ADDING THIS MODULE PROVIDES 112x1
C
O
N
T
R
O
L
I
N
C
O
N
T
R
O
L
O
U
T
NPUTS
1
2
3
4
5
6
7
8
9
OUTPUT
10
11
12
13
14
15
16
ADDING THIS MODULE PROVIDES 128x1
IN PART, OF THE DESIGN OR DETAILS CONTAINED HEREIN IS PROHIBITED WITHOUT THE WRITTEN PERMISSION OF QUINTECH, INC.
I
N
C
O
N
T
R
O
L
THIS DIAGRAM IS THE PROPERTY OF QUINTECH, INC. AND TRANSMITTED IN CONFIDENCE.
AUTORANGING
100-240 VAC 50/60 Hz
2 AMP
C
O
N
T
R
O
L
THE REPRODUCTION, USE OR DISCLOSURE, IN WHOLE OR
MCP 128 CONTROLLER
This page intentionally left blank
SRX 2150
Modular L-Band
RF Routing Switch
General Description:
Quintech's SRX 2150 is a routing switch that is ideal for monitoring applications. Spanning a frequency range of 9502150 MHz, the system can be expanded in 16x1 modules up to a maximum configuration of 128x1. The SRX 2150
system greatly enhances system reliability by eliminating the need for patch panels and repetitive mechanical
connections. Controllable either locally thru the front panel keypad or remotely thru either an RS-232 or RS-422
computer interface, the SRX 2150 system is compatible with most monitoring and control systems.
Specifications:
Inputs:
16 (expandable to 128)
Outputs:
1
Frequency:
950-2150 MHz
Impedance:
75 :
Max. Total Operating Input Power:
+10 dBm (each input)
Insertion Loss:
-16 dB @ 1550 MHz
Frequency Response:
+ 4 dB
Isolation:
40 dB min.
Input Return Loss:
12 dB
Output Return Loss:
10 dB
RF Connectors:
Type "F", 75 :(BNC optional)
Control:
Local and remote via Quintech's MCP 128/(8x1) control module
Control Mod. Connectors:
D-9 Female (Control In), D-9 Female (Control Out) RJ45 (Ethernet)
Expansion Mod. Connectors:
D-9 Female (Control In), D-9 Female (Control Out)
Power Requirements:
100-240 VAC, 50/60 Hz
Power Consumption:
5W per box
Mechanical:
1 RU (1.75"H x 19"W x 18.5"D), 7.0 lbs.
250 Airport Road • Indiana, PA 15701 • (800) 839-3658 • (724) 349-1412 • Fax: (724) 349-1421
http://www.qecinc.com/ • info@qecinc.com
” 2002 Quintech Electronics and Communications Inc. All rights reserved. All product designs and specifications are subject to change without notice.
SRX 2150 Rev A
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Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
1
Quintech SRX Series Protocol v2.15
8/18/2003 Rev A
This document specifies a common command protocol that can be used to control a Quintech
SRX controller from a computer.
Command Summary
This list gives the commands defined in Protocol 2.15.
C
Check Change Flag / Unit Status. This flag will be set if a crosspoint has been changed
since the last polling or if any alarms are present.
E
Ethernet. Various commands to set Ethernet parameters and control access.
F
Firmware version. Identifies the SRX model, protocol and firmware version, and size as
set on the controller.
L
Lock a crosspoint (or the front panel controls1).
O
Output query. Queries for the input connected to the specified output.
Q
Check queue. The queue stores up to 8 local changes made since the last “C” check.
S
Set a crosspoint. Connect an input to an output.
U
Unlock a crosspoint (or the front panel keypad1).
Other commands are reserved for future use.
1
This feature not available on standard 2.15 protocol systems.
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
2
Protocol Message Structure
Commands packets can be sent over the Ethernet and serial ports (if available) and use a
standard STX/ETX protocol wrapper. Each packet includes a header byte, a two-byte address
field, a command byte, necessary data bytes, end byte, and a checksum byte. The bytes are
transmitted using an 8-bit word, with 1 stop bit and no parity. The general form for commands
and messages is:
Header
Address
Command
Databyte(s) End
Checksum
Control Bytes
Control bytes are transmitted as hexadecimal values.
Command Header Byte = STX (0x02)
Command End Byte = ETX (0x03)
Response Header Byte = ACK (0x06) for accepted commands.
Response Header Byte = NAK (0x15) for rejected commands.
Response End Byte = ETX (0x03)
The Header Byte (STX) is also used to reset the command receive buffer. If this byte is
received, it will be accepted as the beginning of a new message. The previous message will
be discarded. The only exception to this is if the byte (0x02) is a checksum byte. When the
buffer is reset, the checksum byte is also reset.
There is a 32-byte limit on command length. Any command longer than this will automatically
generate an error response if or when an ETX end byte is received. If a new STX is received
before an ETX, it will reset the command receive buffer and no error message will be sent.
If a break in communication occurs while a message is being transmitted (i.e., before the unit
receives the ETX and CHK byte), the buffer will clear and the command will be lost (no
response will be sent). This condition will occur if there is a delay of about 200 milliseconds
between bytes.
Address Field
The address field consists of two ASCII digits. The address for a control unit is normally set
using the front panel keypad. Each unit will only respond to a command with a matching
address. This allows multiple control units to be connected on a shared RS-422/485 control
bus. The address can be set from 00 to FF on units with front panel configuration.
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
3
Address FF is a serial broadcast address. Any unit will respond to a command with an address
of FF regardless of the actual serial address set for the unit. Commands being sent to units
over Ethernet must contain an address of FF for proper operation. Otherwise a nonmatching serial address could cause the command to be rejected even though the IP address
was correct.
Command
The command is one or more ASCII characters from A to Z. A list of available commands is in
the next section.
Data Bytes
Each command has a fixed number of data bytes. A response to a command may have a
variable number of data bytes. In that case one of the data bytes will signify how many data
bytes are contained in the message.
Checksum
The checksum byte is a bit wise Exclusive OR (XOR) of all the bytes, inclusively, from the
header to the ETX. For example:
02h 30h 30h 51h 03h 50h
STX 0
0
Q ETX CHK
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
4
Command Descriptions
C: Check Change Flag/Unit Status
The change flag tells the user if any crosspoint changes are in the queue. The queue will
store up to eight changes made from the local front panel keypad control. This command can
be sent periodically to check if any local changes have been made or if any alarms have
occurred. The change flag is cleared only when the queue is empty. The response will
always contain 8h as the MSD (most significant digit). The LSD (least significant digit) will be
determined as follows:
0h – No Change since last “Q” Check Queue command.
1h – At least one crosspoint has been changed locally.
2h – At least one alarm is present.
8h – The queue has overflowed.
If the queue has overflowed, all crosspoints should be queried.
Command sent:
02 XX XX 43
STX ADR ADR C
03 XX
ETX CHK
Examples of positive responses:
06 XX XX 43
ACK ADR ADR C
80
80
03 XX
ETX CHK (No changes have occurred)
06 XX XX 43
ACK ADR ADR C
81
81
03 XX
ETX CHK (Changes have occurred)
06 XX XX 43
ACK ADR ADR C
88
89
03 XX
ETX CHK (The queue has overflowed)
06 XX XX 43
ACK ADR ADR C
83
83
03 XX
ETX CHK (An alarm and changes have occurred)
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
5
EG: Set Ethernet Default Gateway
This command sets the default Ethernet gateway.
Command format:
02 XX XX 45
STX ADR ADR E
47
G
XX
nn
XX
nn
XX
nn
XX
nn
XX
nn
XX
nn
XX
nn
03 XX
ETX CHK
30
0
31
1
30
0
XX
nn
XX
nn
2E
.
2E
.
XX
nn
XX
nn
XX
nn
2E
.
30
0
30
0
30
0
2E
.
Example Command:
02 46
STX F
46
F
45
E
47
G
2E
.
30 30 30 2E 30 30 31 03 2D
0
0
0
.
0
0
1 ETX CHK
(Set Gateway = 010.000.000.001)
Positive response:
06 46
ACK F
46
F
45
E
47
G
03 07
ETX CHK
Note:
The change will take place after the current Ethernet session ends and the connection is
released.
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
6
EI: Set Ethernet IP Address
This command sets the Ethernet IP Address.
Command format:
02 XX XX 45
STX ADR ADR E
49
I
XX
nn
XX
nn
XX
nn
XX
nn
XX
nn
XX
nn
XX
nn
03 XX
ETX CHK
30
0
31
1
30
0
XX
nn
XX
nn
2E
.
2E
.
XX
nn
XX
nn
XX
nn
2E
.
30
0
30
0
30
0
2E
.
Example Command:
02 46
STX F
46
F
45
E
49
I
2E
.
30 30 30 2E 32 33 34 03 27
0
0
0
.
2
3
4 ETX CHK
(Set IP Address = 010.000.000.234)
Positive response:
06 46
ACK F
46
F
45
E
49
I
03 09
ETX CHK
Note:
The change will take place after the current Ethernet session ends and the connection is
released.
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
7
ELD: Ethernet Lock Disable
This command disables the Ethernet lock. If the lock has been enabled (using the ELE
command), command packets input from the Ethernet port are received but ignored except
for the ELD command. This provides an additional level of control over the switch and the
Ethernet port. The ELD command is used to disable the lock and enable the processing of
command packets.
The ELD command must contain a password value that matches the current password in
order for the Ethernet lock to be disabled. The default value for the password is “Quintech”.
The value of the password can be changed using the ELP command.
Command format:
02 XX XX 45
STX ADR ADR E
4C
L
44
D
03 XX
ETX CHK
Example Command:
02 46 46 45 4C 44 51 75 69
STX F
F
E
L
D
Q
u
i
(Disable Ethernet Command Lock)
6E
n
74
t
65
e
63
c
68
h
03 75
ETX CHK
Positive response:
06 46
ACK F
46
F
45
E
4C
L
03 0C
ETX CHK
Note:
The password may be reset to the default “Quintech” from the front panel LCD and keypad.
An ELD command with an incorrect password value will return a NAK response.
The switch is shipped from the factory with the Ethernet lock disabled so it will accept and process
command packets. If the ELE command is never issued, the Ethernet lock will never be enabled and
the ELD, ELE, and ELP commands can be ignored.
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
8
ELE: Ethernet Lock Enable
This command enables the Ethernet command lock. When the lock is enabled, command
packets input from the Ethernet port are received but ignored except for the ELD command.
The ELD command is used to disable the lock and enable the processing of command
packets.
Command format:
02 XX XX 45
STX ADR ADR E
4C
L
45
E
03 XX
ETX CHK
Example Command:
02 46 46 45 4C 45 03 4D
STX F
F
E
L
E ETX CHK
(Enable Ethernet Command Lock)
Positive response:
06 46
ACK F
46
F
45
E
4C
L
03 0C
ETX CHK
Note:
The switch is shipped from the factory with the Ethernet lock disabled so it will accept and process
command packets. If the ELE command is never issued, the Ethernet lock will never be enabled and
the ELD, ELE, and ELP commands can be ignored.
If the Ethernet lock is on, valid command packets sent over the Ethernet will return a NAK message
with the issued command, indicating that it was rejected because of the lock. Valid packets sent over
the serial port will still be accepted.
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
9
ELP: Set Ethernet Lock Password
This command sets a new Ethernet Lock Password. The password is an alpha-numeric value
from 1 to 10 characters. A null password (no password) is also allowed.
Command format:
02 XX XX 45
STX ADR ADR E
4C
L
50
P
XX …
XX 03 XX
[Password] ETX CHK
Example Command:
02 46 46 45 4C 50 78 79
STX F
F
E
L
P
x
y
(Set password to “xyzzy”)
7A
z
7A
z
79
y
03 20
ETX CHK
02 46 46 45 4C 50 31 2B 52
STX F
F
E
L
P
1
+
R
(Set password to “1+RaLpH!2”)
61
a
4C
L
70
p
Example Command:
48
H
21
!
32
2
03 16
ETX CHK
Example Command:
02 46 46 45 4C 50 03 58
STX F
F
E
L
P ETX CHK
(Set password to no password)
Positive response:
06 46
ACK F
46
F
45
E
4C
L
03 0C
ETX CHK
Note:
Although almost any hex value or ASCII character can be used in the password, users would be wise
not to use the hex values 00 – 1F or 7F – FF since these are not associated with keys on a standard
keyboard. They may also cause undesirable side effects. In particular hex 02 (STX) and 03 (ETX) are
used to delineate the command packet and should never be used in the password. If the password is
set to some unknown value, it can be reset to the default “Quintech” from the front panel LCD and
keypad.
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
10
EP: Set Ethernet Port
This command sets the Ethernet port that is monitored for command packets. The default
port set at the factory is 9100. There is no need to change this unless it conflicts with another
network device.
Command format:
02 XX XX 45
STX ADR ADR E
50
P
XX
nn
XX
nn
XX
nn
XX
nn
03 XX
ETX CHK
39
9
31
1
30
0
30
0
03 1C
ETX CHK
Example Command:
02 46 46 45 50
STX F
F
E
P
(Set Port = 9100)
Positive response:
06 46
ACK F
46
F
45
E
50
P
03 10
ETX CHK
Note:
The change will take place after the current Ethernet session ends and the connection is
released.
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
11
ES: Set Ethernet Subnet Mask
This command sets the Ethernet Subnet Mask.
Command format:
02 XX XX 45
STX ADR ADR E
53
S
XX
nn
XX
nn
XX
nn
XX
nn
XX
nn
XX
nn
XX
nn
03 XX
ETX CHK
32
2
35
5
35
5
XX
nn
XX
nn
2E
.
2E
.
XX
nn
XX
nn
XX
nn
2E
.
32
2
35
5
35
5
2E
.
Example Command:
02 46
STX F
46
F
45
E
53
S
2E
.
32 35 35 2E 32 33 34 03 3B
2
5
5
.
0
0
0 ETX CHK
(Set Netmask = 255.255.255.000)
Positive response:
06 46
ACK F
46
F
45
E
53
S
03 13
ETX CHK
Note:
The change will take place after the current Ethernet session ends and the connection is
released.
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
12
F: Firmware Version / Unit ID
This command will return a message with the protocol and firmware versions, the series and
model number, and the size of the matrix. The fields will be returned as follows: “Firmware
version” “Protocol version” “Model Number”/ “Matrix Size”. For example, a 16x1 SRX would
give a response of the form “Fv1.01 Pv2.15 SRX2150/016X001”.
Command sent:
02 XX XX 46
STX ADR ADR F
03 XX
ETX CHK
Example of positive response:
06 XX XX 46
ACK ADR ADR F
76
v
35
1
2E
.
31
0
30
1
20
50
P
76
v
33
2
2E
.
31
1
35
5
…56 55
… S R
31
1
35
5
30
0
2F
/
31
1
32
2
38
8
58
X
30
0
30
0
31
1
3
XX
ETX CHK
58
X
32
2
20…
…
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
13
L: Lock Crosspoint
This command sets a crosspoint and then “locks” it so that output may not be rerouted to any
other input until it is either unlocked or locked again to a different output. A locked crosspoint
may be rerouted by locking it to another crosspoint. A lock can be over-ridden from the front
panel.
Command sent:
02 XX XX 4C 30 30 31 30
STX ADR ADR L
0
0
1
0
(Lock output 1 to input 5)
30
0
35
5
03 XX
ETX CHK
Positive response:
06 XX XX 4C
ACK ADR ADR L
03 XX
ETX CHK
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
O: Query Output Channel
This command queries for the input connected to the specified output.
Example command sent:
02 XX XX 4F 30 30 31 03 XX
STX ADR ADR O
0
0
1 ETX CHK
(Query the status of output 1)
Example positive response:
06 XX XX 4F 30 30 32 03 XX
ACK ADR ADR O
0
0
2 ETX CHK
(Output 1 is connected to input 2)
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
14
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
15
Q: Check Queue
This command will read the change queue. The change queue contains up to 8 crosspoint
changes executed since the last Q command. All crosspoint changes are put in the queue
regardless of the source. If more than one change is executed for a given output, only the
last change will be stored in the queue. The ASCII number after Q in the response is the
number of changes that the queue contains and ranges from 0 to 8. If no crosspoint changes
are stored in the queue this number will be zero (30h). If more than 8 changes occurred since
the last Q command, this number will not be valid and bit 3 of the queue change flag will be
set to signal that an overflow has occurred. After the queue is checked the queue and the
queue change flag are cleared.
Command sent:
02 XX XX 51
STX ADR ADR Q
03 XX
ETX CHK
Example positive responses:
06 XX XX 51 30 03 XX
ACK ADR ADR Q
0 ETX CHK
(No changes have occurred)
06 XX XX 51 32 30 30 35 30 31 35 30 31 36 30 30 31 03 XX
ACK ADR ADR Q
2
0
0
5
0
1
5
0
1
6
0
0
1 ETX CHK
(Two changes have occurred: output 5 was connected to input 15, and output
16 was connected to input 1)
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
16
S: Set Crosspoint
This command will connect one input to an output. The command byte is followed by three
bytes giving the output, then three bytes giving the input. The output must be 001 for an SRX.
Example command sent:
02 XX XX 53 30 30 31 30 30
STX ADR ADR S
0
0
1
0
0
(Connect output 1 to input 2)
32
2
03 XX
ETX CHK
Positive response:
06 XX XX 53
ACK ADR ADR S
03 XX
ETX CHK
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
U: Unlock Crosspoint
This command will unlock a locked crosspoint.
Command sent:
02 XX XX 55 30 30 31 30
STX ADR ADR U
0
0
1
0
(Unlock output 1 to input 5)
30
0
35
5
03 XX
ETX CHK
Positive response sent:
06 XX XX 55
ACK ADR ADR U
03 XX
ETX CHK
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
17
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
18
Negative Responses:
Occasionally, the matrix will be unable to carry out a command due to various reasons. The
NAK reply set is provided to help determine where the error occurred. A NAK reply will be
sent after the matrix has received the CHK byte.
x: Checksum Incorrect
This reply is sent when the checksum sent by the computer controller is different from the one
calculated by the matrix controller. This message would indicate data has been corrupted
during transmission.
Negative response sent:
15 XX XX 78
NAK ADR ADR x
03 XX
ETX CHK
c: Command Unrecognized
This type of error message occurs when the matrix receives an unspecified command. The
unit will respond as specified below.
Negative response sent:
15 XX XX 63
NAK ADR ADR c
03 XX
ETX CHK
u: Command Unavailable
This type of error message occurs when the matrix receives command that is not
implemented or can’t be done on a particular system or at a particular time. The unit will
respond as specified below.
Negative response sent:
15 XX XX 75
NAK ADR ADR u
03 XX
ETX CHK
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
19
i: Improper Data
This reply is sent if an improper number of data bytes are contained in the protocol wrapper.
For example, if an “S” command is sent with only an output number and no input number. This
error will also be sent for any command that contains too many or too few bytes, even if the
command does not have any data bytes.
Negative response sent:
15 XX XX 69
NAK ADR ADR i
03 XX
ETX CHK
d: Data out of Range
This message will be sent if the data bytes sent are outside the parameters of your matrix. If
the SRX is polled for the status of output 17 and you only have 16 outputs, you will receive
this message.
Negative response sent:
15 XX XX 64
NAK ADR ADR d
03 XX
ETX CHK
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Protocol
Protocol Version 2.15
20
Serial Interface
A new command can be sent to the matrix as soon as a response to the previous command
is received. If a break in communication occurs while a message is being transmitted the
input buffer will automatically clear and no error response will be given.
Serial Parameters:
Baud Rate:
Data Bits:
Stop Bits:
Parity:
Protocol:
Flow Control:
9600
8
1
None
STX/ETX
None. The program sending commands must wait until a response is received
from the matrix controller before sending another command.
SRX “Control In” Serial Pinouts:
RS-232
1 – GND
2 - TXD
3 – RXD
4 – NC
5 – GND
6 – Not Used
7 – NC
8 – NC
9 – Not Used
RS-422/485
1 - GND
2 - NC
3 – Non-Inverting Transmit (+)
4 – Non-Inverting Receive (+)
5 - GND
6 – Inverting Transmit (-)
7 - NC
8 - NC
9 – Inverting Receive (-)
Note on the RS-232 port:
No null modem or crossover cable is needed on the serial port.
Note on RS-485 mode:
RS-485 is compatible with RS-422. RS-485 allows multiple devices on a single shared serial
bus. The SRX unit uses a 4-wire RS-485 interface.
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE  2002 QUINTECH INC. ALL RIGHTS RESERVED.
Quintech Electronics and Communications Inc.
SRX Series Switching System
Rev. A
NECESSARY EQUIPMENT
x Hewlett Packard Network Analyzer – Models 8714C (75 ȍ), 8714ET (50 ȍ), or
equivalent
x 75 ȍ coaxial cables (N – to – N type), 50 ȍ if using the 8714ET
x Connectors and adapters
CALIBRATION & SETTINGS
1.
Turn on the Network Analyzer and allow it to complete its warm-up procedure.
2.
Set the frequency to correspond to your system.
3.
Select Channel 1 as Transmission and Channel 2 as Reflection.
4.
Channel 1 – Reference 0.50 dB, 1.0 dB/division.
5.
Channel 2 – Reference -10 dB, 5.0 dB/division.
6.
Power: +10 dBm.
7.
Display: Data.
8.
Calibrate Channel 1 for “Transmission” and Channel 2 for “Response”, respectively.
9.
Ensure that all cables and power cords are properly connected.
10.
Attach DC blocks in case DC is transmitted on RF lines.
11.
Turn on the SRX units.
TESTING PROCEDURE
1. Connect the Reflection (RF out) line of the network analyzer to the SRX’s input.
Connect the transmission (RF in) line to output 1.
2. Using either the local control unit, or the computer control port, select output 1 to input 1.
3. Compare measured data with desired specifications. If desired, repeat procedure for
other inputs/outputs.
4. If a problem is encountered, check the control selection, and ensure that all cables are
properly connected. If the problem persists, consult the factory for assistance.
DESIGNS AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE ” 2003 QUINTECH INC. ALL RIGHTS RESERVED.
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IN PART, OF THE DESIGN OR DETAILS CONTAINED HEREIN IS PROHIBITED WITHOUT THE WRITTEN PERMISSION OF QUINTECH, INC.
CK. BY:
TOM LONG
NTS
06/05/03
DWG NO.
TYPICAL TEST SETUP
A
REV
1 OF 1
PAGE
INDIANA, PENNSYLVANIA 15701
QUINTECH ELECTRONICS AND COMMUNICATIONS INC.
SCALE
DR. BY:
A
SIZE
C.O. #
INFORMATION HEREIN IS PROPRIETARY TO:
FEMALE "N" CONNECTOR
INPUT
300KHz - 3000 MHz RF
NA (OR EQUIVALENT)
HP 8714ET
HP 8714C
NETWORK ANALYZER
OUTPUT
FEMALE "N" CONNECTOR
THE REPRODUCTION, USE OR DISCLOSURE, IN WHOLE OR
MALE "N" CONNECTOR
RF
HP RCONL 1250-2368
FEMALE "N" CONNECTOR TO
MALE ADAPTER OF APPROPRIATE TYPE
RF
MALE "N" CONNECTOR
THIS DRAWING IS THE PROPERTY OF QUINTECH, INC. AND TRANSMITTED IN CONFIDENCE.
FEMALE CONNECTOR OF
APPROPRIATE TYPE
OUTPUT
MATRIX
UNIT
INPUT
FEMALE CONNECTOR OF
APPROPRIATE TYPE
QMI (QUALITY MICROWAVES INTERCONNECTS, INC.)
MALE TO MALE "N" 4 FT. SHIELDED CABLE
REV
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Setting the SRX Expansion Module Address Switches
Each SRX expansion switch module has two internal rotary switches that are used to set the address for that unit.
Each unit in a switch matrix only responds to control commands prefaced with an address that corresponds to the
address set on the switches.
The address for a particular unit is pre-set at the factory and normally will never need to be changed. However, if a
particular unit is exchanged with another unit, the address for that unit may need to be changed. Figure 1 shows the
orientation of the switches. Table 1 defines the addresses that are typically associated with the various module IDs.
To access the switches, remove the two round black hole plugs on the top cover. The two switches are mounted
directly under these holes. Use a small screwdriver to change the switch setting. The arrow near the center of the switch
points to the current switch setting. The address is in hexadecimal notation and will be between 00h and FEh (where “h”
denotes hexadecimal). After the address has been changed, replace the hole plugs. Finish by replacing the old unit
address label with the new label that has been provided. Table 1 defines the addresses that are typically associated
with the various module IDs.
Figure 1:
Ex. Switch Setting for Address “0Fh”
Table 1:
MODULE ID
INPUTS
ADDRESS
S1
1-16
0Fh
T1
17-32
1Eh
U1
33-48
2Dh
V1
49-64
3Ch
W1
65-80
4Bh
X1
81-96
5Ah
Y1
97-112
69h
Z1
113-128
78h
250 Airport Road • Indiana, PA 15701 • (800) 839-3658 • (724) 349-1412 • Fax: (724) 349-1421
http://www.qecinc.com/ • info@qecinc.com
” 2003 Quintech Electronics and Communications Inc. All rights reserved. All product designs and specifications are subject to change without notice.
Setting the SRX Expansion Module Address Switches
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Quintech Electronics and Communications Inc.
SRX Series Switching System
Date Received: ___________________________
Date Installed: _______________________
Serial Number: ___________________________
NOTES:
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