rtd GPS16162HR User manual
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RTD Embedded Technologies, Inc.
AS9100 and ISO 9001 Certified
GPS16162HR
PC/104 GPS Module
User’s Manual
BDM-610020114 Rev. C
RTD Embedded Technologies, Inc. | www.rtd.com iii GPS16162 User’s Manual
Revision History
Rev A Initial Release
Rev B Corrected information in Table 14
Corrected CN8 reference in Figure 2
Added CN6 jumper information
Added JP1 jumper information
Added section GPS Battery
Updated board picture
Rev C Updated RTD trademark text
Section 2.2: Added power consumption and +5V input supply current
Section 3.2: Updated Figure 1 (board dimensions) to show location of JP7
Section 3.3. Updated Figure 2 to show location of JP7
Section 3.3.2: Documented JP7 functionality
Section 4.2: Updated IDAN 3D drawing to show connector locations
Section 4.3.1: Added pin orientation to IDAN connector diagram
Section 5.1: Added COCOM limits
Advanced Analog I/O, Advanced Digital I/O, aAIO, aDIO, a2DIO, Autonomous SmartCal, “Catch the Express”, cpuModule, dspFramework, dspModule, eBuild, expressMate, ExpressPlatform, “MIL Value for COTS
prices”, multiPort, PlatformBus, and PC/104EZ are trademarks, and “Accessing the Analog World”, dataModule, IDAN, HiDAN, HiDANplus, RTD, the RTD logo, and StackNET are registered trademarks of RTD
Embedded Technologies, Inc. (formerly Real Time Devices, Inc.). PS/2 is a trademark of International Business Machines Inc. PCI, PCI Express, and PCIe are trademarks of PCI-SIG. PC/104, PC/104-Plus,
PCI-104, PCIe/104, PCI/104-Express and 104 are trademarks of the PC/104 Consortium. All other trademarks appearing in this document are the property of their respective owners.
Failure to follow the instructions found in this manual may result in damage to the product described in this manual, or other components of the system. The procedure set forth in this manual shall only be performed
by persons qualified to service electronic equipment. Contents and specifications within this manual are given without warranty, and are subject to change without notice. RTD Embedded Technologies, Inc. shall not
be liable for errors or omissions in this manual, or for any loss, damage, or injury in connection with the use of this manual.
Copyright © 2017 by RTD Embedded Technologies, Inc. All rights reserved.
RTD Embedded Technologies, Inc. | www.rtd.com iv GPS16162 User’s Manual
Table of Contents
1Introduction 7
1.1 Product Overview........................................................................................................................................................................ 7
1.2 Board Features ........................................................................................................................................................................... 7
1.3 Ordering Information................................................................................................................................................................... 8
1.4 Contact Information .................................................................................................................................................................... 8
1.4.1 Sales Support 8
1.4.2 Technical Support 8
2Specifications 9
2.1 Operating Conditions .................................................................................................................................................................. 9
2.2 Electrical Characteristics ............................................................................................................................................................ 9
3Board Connection 10
3.1 Board Handling Precautions ..................................................................................................................................................... 10
3.2 Physical Characteristics............................................................................................................................................................ 10
3.3 Connectors and Jumpers.......................................................................................................................................................... 11
3.3.1 External I/O Connectors 11
CN8: Digital I/O Connector 11
CN3: GPS Utility Connector 12
3.3.2 Jumpers 12
CN6: GPS Antenna Bias 12
JP1: 1 PPS on Carrier Detect 12
JP2: 1 PPS Interrupt Jumper 12
JP3: GPS Interrupt Jumper 12
JP4 & JP5: Digital I/O Jumpers 13
JP6: Base Address Jumpers 13
JP7: Battery Jumper 15
3.3.3 LED Indicators 15
D3 (PPS) 15
3.4 Steps for Installing .................................................................................................................................................................... 16
4IDAN Connections 17
4.1 Module Handling Precautions................................................................................................................................................... 17
4.2 Physical Characteristics............................................................................................................................................................ 17
4.3 Connectors................................................................................................................................................................................ 18
4.3.1 External I/O Connectors 18
Utility Connector - 9-pin “D” Female Connector 18
Digital I/O Connector - 25-pin “D” Female Connector 18
GPS Antenna - SMA Female Connector 19
4.4 Steps for Installing .................................................................................................................................................................... 20
5Functional Description 21
5.1.1 Linx RXM-GNSS-TM GPS Receiver 21
GPS module interface 22
GPS Antenna 22
GPS Battery 22
COCOM Limits 22
5.1.2 Digital I/O 22
5.1.3 Interrupts 22
6Register Address Space 23
6.1 General Board Control.............................................................................................................................................................. 23
6.1.1 UART I/O (GPS BASE + 0 to GPS BASE + 7) 23
6.1.2 GPS Status (GPS BASE + 401h) 23
6.1.3 Digital I/O 24
RTD Embedded Technologies, Inc. | www.rtd.com vGPS16162 User’s Manual
6.1.4 RTD ISA ID 24
6.2 GPS6160 Compatibility............................................................................................................................................................. 25
7Troubleshooting 26
7.1 Common Problems and Solutions ............................................................................................................................................ 26
8Additional Information 27
8.1 PC/104 Specifications............................................................................................................................................................... 27
8.2 Linx RXM-GNSS-TM ................................................................................................................................................................ 27
9Limited Warranty 28
RTD Embedded Technologies, Inc. | www.rtd.com vi GPS16162 User’s Manual
Table of Figures
Figure 1: Board Dimensions ................................................................................................................................................................................... 10
Figure 2: Board Connections .................................................................................................................................................................................. 11
Figure 3: Example 104™Stack............................................................................................................................................................................... 16
Figure 4: IDAN Dimensions .................................................................................................................................................................................... 17
Figure 5: Example IDAN System ............................................................................................................................................................................ 20
Figure 6: GPS1612 Block Diagram......................................................................................................................................................................... 21
Table of Tables
Table 1: Ordering Options ........................................................................................................................................................................................ 8
Table 2: Operating Conditions .................................................................................................................................................................................. 9
Table 3: Electrical Characteristics ............................................................................................................................................................................ 9
Table 4: CN8 Digital I/O Pin Assignments.............................................................................................................................................................. 11
Table 5: CN3 GPS Utility Pin Assignments ............................................................................................................................................................ 12
Table 6: JP3 Settings.............................................................................................................................................................................................. 12
Table 7: JP1 Settings.............................................................................................................................................................................................. 12
Table 8: IDAN- GPS16162 9-Pin "D" Connector .................................................................................................................................................... 18
Table 9: IDAN- GPS16162 25-Pin "D" Connector .................................................................................................................................................. 18
Table 10: Register Map .......................................................................................................................................................................................... 23
Table 11: GPS STATUS (GPS BASE + 401h) ....................................................................................................................................................... 23
Table 12: Digital I/O Data (GPS BASE + 404h)...................................................................................................................................................... 24
Table 13: Digital I/O Data (GPS BASE + 405h)...................................................................................................................................................... 24
Table 14: Digital I/O Direction (GPS BASE + 406h)............................................................................................................................................... 24
Table 15: Digital I/O Direction (GPS BASE + 407h)............................................................................................................................................... 24
Table 16: RTD ID DATA READ Indexes................................................................................................................................................................. 24
Table 17: Digital I/O Data (GPS BASE + 400h)...................................................................................................................................................... 25
Table 18: Digital I/O Data (GPS BASE + 400h)...................................................................................................................................................... 25
Table 19: Troubleshooting ...................................................................................................................................................................................... 26
RTD Embedded Technologies, Inc. | www.rtd.com 7GPS16162 User’s Manual
1Introduction
1.1 Product Overview
The GPS16162 is designed to provide global positioning system (GPS) for PC/104 based systems. Included on the GPS16162 is a Linx RXM-
GNSS-TM GPS Receiver module.
The GPS16162 has a UART chip that permits communication with either serial port on the GPS receiver module over the PC/104 bus without
using other serial ports in the PC/104 system. The GPS supports National Marine Electronics Association (NMEA-0183 ver. 4.10) messages
1.2 Board Features
•PC/104 stackable bus structure
•Linx RXM-GNSS-TM GPS engine
oL1 1575.42MHz, C/A code
o33-channel satellite tracking
oPosition accuracy: 2.5m
oTime accuracy of ±11ns
o1Hz update rate (configurable up to 10Hz)
oTracking sensitivity down to -164 dBm
oProtocol: NMEA-0183 ver 4.10
oConstellation System Support:
•GPS
•GLONASS
•GALILEO
•QZSS
oDGPS support:
•(SBAS) Satellite-Based Augmentation System
•(RTCM) Radio Technical Commission for Maritime Services
•(WAAS) Wide-Area Augmentation System
•(EGNOS) European Geo-Stationary Navigation System
•(MSAS) MTSAT Satellite-Based Augmentation System
•(GAGAN) GPS-Aided Geo-Augmented Navigation
•Supports +3.3V/+5V active and passive antennas
•OSX/MCX antenna jack
•Standard 16C550 UART Interface
oCompatible with all modern operating systems.
oJumper-selectable Base Address and IRQ
oJumper-selectable 1 PPS on carrier-detect
oTX and RX only, no flow control or handshaking required
•IRQ Jumper for 1 PPS
•Digital I/O
o16 bit-programmable Digital I/O
•GPS Utility Connector
o1 PPS
•Status LEDs
o1 PPS
•PC/104 compliant
RTD Embedded Technologies, Inc. | www.rtd.com 8GPS16162 User’s Manual
1.3 Ordering Information
The GPS16162 is available in the following options:
Table 1: Ordering Options
Part Number
Description
GPS16162
PC/104 GPS Module
IDAN-GPS16162
PC/104 GPS Module in IDAN enclosure
The Intelligent Data Acquisition Node (IDAN®) building block can be used in just about any combination with other IDAN building blocks to
create a simple but rugged 104™ stack. This module can also be incorporated in a custom-built RTD HiDAN®or HiDANplus®High Reliability
Intelligent Data Acquisition Node. Contact RTD sales for more information on our high reliability systems.
1.4 Contact Information
1.4.1 SALES SUPPORT
For sales inquiries, you can contact RTD Embedded Technologies sales via the following methods:
Phone: 1-814-234-8087 Monday through Friday, 8:00am to 5:00pm (EST).
1.4.2 TECHNICAL SUPPORT
If you are having problems with your system, please try the steps in the Troubleshooting section of this manual.
For help with this product, or any other product made by RTD, you can contact RTD Embedded Technologies technical support via the
following methods:
Phone: 1-814-234-8087 Monday through Friday, 8:00am to 5:00pm (EST).
RTD Embedded Technologies, Inc. | www.rtd.com 9GPS16162 User’s Manual
2Specifications
2.1 Operating Conditions
Table 2: Operating Conditions
Symbol
Parameter
Test Condition
Min
Max
Unit
Vcc5
5V Supply Voltage
4.75
5.25
V
Vcc3
3.3V Supply Voltage
n/a
n/a
V
Vcc12
12V Supply Voltage
n/a
n/a
V
Ta
Operating Temperature
-40
+85
C
Ts
Storage Temperature
-55
+125
C
RH
Relative Humidity
Non-Condensing
0
90%
%
MTBF
Mean Time Before Failure
Telcordia Issue 2
30°C, Ground benign, controlled
TBD
Hours
2.2 Electrical Characteristics
Table 3: Electrical Characteristics
Symbol
Parameter
Test Condition
Min
Typ
Max
Unit
P
Power Consumption
Vcc5 = 5.0V
0.7
W
Icc
5V Input Supply Current
Active
140
mA
Digital I/O
VIH
Input High Voltage
CN7
2.0
5.5
V
VIL
Input Low Voltage
CN7
-0
0.8
V
VOH
Output High Voltage
IO= -4mA CN7
2.4
3.3
V
VOL
Output Low Voltage
IO= 8mA CN7
0
0.4
V
5V Output
CN7
200
mA
Pull-up/Pull-down
10K
Ω
RTD Embedded Technologies, Inc. | www.rtd.com 10 GPS16162 User’s Manual
3Board Connection
3.1 Board Handling Precautions
To prevent damage due to Electrostatic Discharge (ESD), keep your board in its antistatic bag until you are ready to install it into your system.
When removing it from the bag, hold the board at the edges, and do not touch the components or connectors. Handle the board in an antistatic
environment, and use a grounded workbench for testing and handling of your hardware.
3.2 Physical Characteristics
STEP model is available upon request; contact RTD Tech Support for more information.
•Weight: Approximately 80 g (0.18 lbs.)
•Dimensions: 90.17 mm L x 95.89 mm W (3.550 in L x 3.775 in W)
Figure 1: Board Dimensions
RTD Embedded Technologies, Inc. | www.rtd.com 11 GPS16162 User’s Manual
3.3 Connectors and Jumpers
Figure 2: Board Connections
3.3.1 EXTERNAL I/O CONNECTORS
CN8: Digital I/O Connector
The GPS16162 offers 16 bit-programmable digital I/O lines. These can be pulled high or low through 10KΩ resistors using JP4
to control bits 0 –7 and JP5 to control bits 8 –15
Table 4: CN8 Digital I/O Pin Assignments
DIO0
2
1
GND
DIO2
4
3
DIO1
DIO4
6
5
DIO3
DIO6
8
7
DIO5
+5V
10
9
DIO7
DIO8
12
11
GND
DIO10
14
13
DIO9
DIO12
16
15
DIO11
DIO14
18
17
DIO13
+5V
20
19
DIO15
JP6: Base
Address
JP1: 1PPS on
CD
CN6: Antenna
Bias
PC/104 ISA Connector
CN8: Digital I/O
CN3: GPS
Utility
JP4 & JP5:
Pull-up/Pull-
down
JP2 & JP3:
Interrupt
Jumpers
JP7: Battery Jumper
RTD Embedded Technologies, Inc. | www.rtd.com 12 GPS16162 User’s Manual
CN3: GPS Utility Connector
The GPS16162 provides 1 PPS delayed through the EPLD (7.5ns max). The pin out of the external connector CN3 is shown below.
Table 5: CN3 GPS Utility Pin Assignments
Reserved
2
1
+5V
1PPS
4
3
GND
Reserved
6
5
GND
Reserved
8
7
Reserved
GND
10
9
GND
Note: CN5 is factory use only.
3.3.2 JUMPERS
CN6: GPS Antenna Bias
CN6 is used to select the antenna bias level. The available bias levels are shown in table below.
Table 6: JP3 Settings
Setting
Description
Notes
1 –2
5V Bias Antenna
2 –3
3.3V Bias Antenna
Factory default
Open
Passive Antenna
JP1: 1 PPS on Carrier Detect
JP1 is used to connect/disconnect the 1 PPS signal from GPS UART carrier detect. The options are shown in the table below.
Table 7: JP1 Settings
Setting
Description
Notes
1 –2
1PPS is connected to the UART CD
Factory default
2 –3
1PPS is disconnected from UART CD
JP2: 1 PPS Interrupt Jumper
The IRQ selection jumpers allow you to set the IRQ used by the 1 PPS signal from the GPS of the GPS16162. The GPS16162 can be
configured for any one of the following IRQs: 2, 5, 6, 7, 10, 11, 12, 14, or 15. The IRQ can be set by closing the appropriately labeled jumper
on the board.
Default Setting: G Jumper closed
JP3: GPS Interrupt Jumper
The IRQ selection jumpers allow you to set the IRQ used by the serial port UART of the GPS16162. The GPS16162 can be configured for any
one of the following IRQs: 2, 5, 6, 7, 10, 11, 12, 14, or 15. The IRQ can be set by closing the appropriately labeled jumper on the board.
The UART’s carrier detect signal, which is driven by the GPS 1 PPS, can be an interrupt source.
Default Setting: IRQ 5 and G Jumper closed
Note: Typically IRQs cannot be shared; although there are some special cases (see “The G Jumper” later in this document). In general,
the IRQ you select should not be used by any other devices in your system.
RTD Embedded Technologies, Inc. | www.rtd.com 13 GPS16162 User’s Manual
Reserved IRQs
Some of the IRQ choices on the GPS16162 may already be used by your CPU’s onboard peripherals. Some commonly-used IRQs are:
•IRQ 2/9 is used by some VGA controllers.
•IRQ 5 or 7 may be used by the CPU’s parallel port. Check your CPU’s configuration to avoid a conflict.
•IRQ 12 is used by the PS/2 mouse. To use this IRQ, you will need to remove the PS/2 mouse from the system. Some CPUs also
require a BIOS setting to disable the PS/2 mouse controller.
•IRQ 14 is used by the primary IDE controller. To use this IRQ, you will need to disable the primary IDE controller.
•IRQ 15 is used by the secondary IDE controller. To use this IRQ, you will need to disable the secondary IDE controller.
The G Jumper
The GPS16162 supports shared interrupts as defined by the PC/104 specification. This sharing is accomplished via the G jumper, which is
located adjacent to the IRQ jumpers. The G jumper installs a 1KΩ resistor to pull the signal to the low state, allowing an interrupt to drive the
signal high. To share interrupts, configure the devices for the same IRQ, then close the G jumper on one (and only one) of the devices.
When using interrupt sharing, consider the following guidelines:
•An interrupt can only be shared if all devices on the IRQ support it. If you have two sharing and one non-sharing device on the
same IRQ, it will not work.
•To share interrupts, the system’s drivers and operating system must support it. The Interrupt Service routines must be written to
check all devices on an IRQ when the interrupt is detected. Many popular operating systems do not support interrupt sharing for
ISA devices.
Note: If you are not sharing interrupts, make sure you leave the GPS16162’s G jumper closed!
JP4 & JP5: Digital I/O Jumpers
JP4 controls a 10K Ohm pull up/down on DIO bits 1-8 and JP5 controls a 10K Ohm pull up/down on DIO bits 9 -16.
Table 8 JP4 & JP5 Operation
Jumper
Description
Default Factory Settings
JP4
1-2 –Pull-up
2-3 –Pull-down
No connect - Neither
2-3 –Pull-down
JP5
1-2 –Pull-up
2-3 –Pull-down
No connect - Neither
2-3 –Pull-down
JP6: Base Address Jumpers
The base address selection jumpers (A3 through A8) allow you to set the base address of the first UART that connects to the GPS module.
Any software that accesses the board will do so through reads and writes to the I/O address set by the jumpers. To function properly, the I/O
address the software is expecting must match the base address set by the jumpers.
As shown in the figure below, A3 is located at the left end of the jumper block, while A8 is located at the right end:
RTD Embedded Technologies, Inc. | www.rtd.com 14 GPS16162 User’s Manual
The table on the following pages shows the possible base address settings for the GPS16162. All base addresses are in hexadecimal. An ‘X’
indicates a closed jumper, while an empty cell indicates an open jumper.
Base Address
(Hexadecimal)
Jumpers
A8
A7
A6
A5
A4
A3
200
208
X
210
X
218
X
X
220
X
228
X
X
230
X
X
238
X
X
X
240
X
248
X
X
250
X
X
258
X
X
X
260
X
X
268
X
X
X
270
X
X
X
278
X
X
X
X
280
X
288
X
X
290
X
X
298
X
X
X
2A0
X
X
2A8
X
X
X
2B0
X
X
X
2B8
X
X
X
X
2C0
X
X
2C8
X
X
X
2D0
X
X
X
2D8
X
X
X
X
2E0
X
X
X
2E8
X
X
X
X
2F0
X
X
X
X
2F8
X
X
X
X
X
300
X
308
X
X
310
X
X
318
X
X
X
320
X
X
328
X
X
X
330
X
X
X
338
X
X
X
X
340
X
X
348
X
X
X
350
X
X
X
358
X
X
X
X
360
X
X
X
368
X
X
X
X
370
X
X
X
X
378
X
X
X
X
X
380
X
X
388
X
X
X
390
X
X
X
398
X
X
X
X
RTD Embedded Technologies, Inc. | www.rtd.com 15 GPS16162 User’s Manual
Base Address
(Hexadecimal)
Jumpers
A8
A7
A6
A5
A4
A3
3A0
X
X
X
3A8
X
X
X
X
3B0
X
X
X
X
3B8
X
X
X
X
X
3C0
X
X
X
3C8
X
X
X
X
3D0
X
X
X
X
3D8
X
X
X
X
X
3E0
X
X
X
X
3E8
X
X
X
X
X
3F0
X
X
X
X
X
3F8
X
X
X
X
X
X
By default, the GPS16162 comes configured with a base address of 0x2E8 for the GPS UART.
When selecting a base address for the GPS16162, please observe the following guidelines:
•Every device in your PC/104 system must have a unique base address! When selecting a base address for the GPS16162, make
certain that it does not conflict with any other devices.
•Base addresses 0x3F8 and 0x2F8 are typically used by serial ports COM1 and COM2, respectively. If you wish to use one of those
base addresses, you will need to disable any conflicting serial port.
•Some operating systems expect UART devices to be located at the standard serial port base addresses (0x3F8, 0x2F8, 0x3E8, and
0x2E8). Setting your GPS16162 to one of these addresses can make system setup and configuration easier.
JP7: Battery Jumper
Removing JP7 will disconnect the battery from the GPS module. JP7 should remain closed for normal operation.
3.3.3 LED INDICATORS
D3 (PPS)
GPS 1 Pulse Per Second (1 PPS)
RTD Embedded Technologies, Inc. | www.rtd.com 16 GPS16162 User’s Manual
3.4 Steps for Installing
1. Always work at an ESD protected workstation, and wear a grounded wrist-strap.
2. Turn off power to the PC/104 system or stack.
3. Select and install stand-offs to properly position the module on the stack.
4. Remove the module from its anti-static bag.
5. Check that pins of the bus connector are properly positioned.
6. Check the stacking order; make sure all of the busses used by the peripheral cards are connected to the cpuModule.
7. Hold the module by its edges and orient it so the bus connector pins line up with the matching connector on the stack.
8. Gently and evenly press the module onto the PC/104 stack.
9. If any boards are to be stacked above this module, install them.
10. Attach any necessary cables to the PC/104 stack.
11. Re-connect the power cord and apply power to the stack.
12. Boot the system and verify that all of the hardware is working properly.
NOTE: When using under Windows, the GPS may be incorrectly detected as
a Serial Mouse, causing erratic mouse cursor behavior. This issue
has been documented by Microsoft. For more information, refer to
Microsoft Knowledge Base Article 283063.
Figure 3: Example 104™Stack
RTD Embedded Technologies, Inc. | www.rtd.com 17 GPS16162 User’s Manual
4IDAN Connections
4.1 Module Handling Precautions
To prevent damage due to Electrostatic Discharge (ESD), keep your module in its antistatic bag until you are ready to install it into your system.
When removing it from the bag, hold the module by the aluminum enclosure, and do not touch the components or connectors. Handle the
module in an antistatic environment, and use a grounded workbench for testing and handling of your hardware.
4.2 Physical Characteristics
•Weight: Approximately 0.21 Kg (0.46 lbs.)
•Dimensions: 152 mm L x 130 mm W x 17 mm H (5.98 in L x 5.12 in W x 0.67 in H)
Figure 4: IDAN Dimensions
RTD Embedded Technologies, Inc. | www.rtd.com 18 GPS16162 User’s Manual
4.3 Connectors
4.3.1 EXTERNAL I/O CONNECTORS
Utility Connector - 9-pin “D” Female Connector
Connector Part #: Amp 1658610-4
Example Mating Connector: Amp 1658608-4
Table 8: IDAN- GPS16162 9-Pin "D" Connector
IDAN Pin#
Signal
GPS16162 Pin #
1
+5V
CN3
1
2
GND
CN3
3
3
GND
CN3
5
4
Reserved
5
GND
CN3
9
6
Reserved
7
1 PPS
CN3
4
8
Reserved
9
Reserved
Digital I/O Connector - 25-pin “D” Female Connector
Connector Part #: VALCON DF-25S-CN
Example Mating Connector: Amp 1658608-2
Table 9: IDAN- GPS16162 25-Pin "D" Connector
IDAN Pin#
Signal
GPS16162 Pin #
1
GND
CN8
1
2
DIO1
CN8
3
3
DIO3
CN8
5
4
DIO5
CN8
7
5
DIO7
CN8
9
6
GND
CN8
11
7
DIO9
CN8
13
8
DIO11
CN8
15
9
DIO13
CN8
17
10
DIO15
CN8
19
11
Reserved
12
Reserved
13
Reserved
14
DIO0
CN8
2
15
DIO2
CN8
4
16
DIO4
CN8
6
17
DIO6
CN8
8
5
1
9
6
13
1
25
14
RTD Embedded Technologies, Inc. | www.rtd.com 19 GPS16162 User’s Manual
18
+5V
CN8
10
19
DIO8
CN8
12
20
DIO10
CN8
14
21
DIO12
CN8
16
22
DIO14
CN8
18
23
+5V
CN8
20
24
Reserved
25
Reserved
GPS Antenna - SMA Female Connector
Connector Part #: SPC Technology 8589-0853
Example Mating Connector: Amp 901-9877-RFX
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