IPSeries F32700N25 Fixed Radio Product Owner‟s Manual Date Released: March 16, 2011 Document #: 516-80618-POM Rev B Copyright 2011 IPMobileNet, LLC.
The term “IC”: before the radio certification number only signifies that Industry of Canada technical specifications were met. Operation is subject to the following two (2) conditions: (1) this devise may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of this device. The following U.S. Patents apply to this product: 5,640,695 6,018,647 6,243,393 Information contained in this document is subject to change without notice.
TABLE OF CONTENTS SECTION 1: THEORY OF OPERATION .....................................................................3 General Block Diagram ....................................................................................3 General Block Diagram Definitions ..........................................................3 F32700N25 Fixed Radio Section Descriptions ...............................................5 Microcontroller .................................................................................
Section 1: Theory of Operation Antenna Inputs/ outputs Microcontroller Injection synthesizer Receiver TR Switch Modem Transmit modulation Transmitter Digital Board Transmit Processing RF Board Figure 1: Block Diagram Block Diagram Definitions For increased data security, the modem supports the Federal Government developed Digital Encryption Standard (DES) data encryption and decryption protocols.
RJ45 Ethernet 10 Base T Interface Connector For further details on the Ethernet Controller, refer to the Crystal LAN Ethernet Controller Product Bulletin (CS8900A-EthernetCtrlr.pdf) available on the Product Documentation CD. Microcontroller Manages the operation of the radio, the modem, and provides transmit time-out protection in the event a fault causes the radio to halt in the transmit mode. Further, uses feedback data from the base and adjust the frequency to lock to the base within 0.1 ppm.
switching the antenna between transmitter and receiver (TX/RX). Receiver The receiver is a double-conversion super-heterodyne with a first intermediate frequency (IF) of 45 MHz and a second IF frequency of 455 KHz. The receiver consists of band-pass filters, an RF amplifier, a MMIC mixer, crystal filters, and a one-chip IF system. The injection synthesizer provides the first local oscillator signal. Outputs from the receiver include RSSI and analog audio for the baseband routing circuitry and modem.
A Supervisor Control Chip (U25) provides power-on reset. The clock controls microcontroller operation and is generated by crystal Y3 and a Pierce oscillator circuit (inside the U30-microcontroller). The latch (U28) decodes low order address bits (A0-A7) from the address/data bits (AD0-AD7). It is controlled by Address Latch Enable (ALE) output of U30 and the bits are used by the modem.
The microcontroller section controls the modem operation. Address bus, address/data bus, and control lines operate the modem chip. The modem circuitry is also run by a crystal-controlled clock, which consists of crystal Y1 and an internal Pierce oscillator. The received audio signal is demodulated into digital data appearing on the AD0-AD07 lines when the MODEMCS* and RD* lines are low.
Receiver IF The major contributor of the IF subsystem (U13) a complete 45 MHz super-heterodyne receiver chip incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector, logarithmic received signal strength indicator (RSSI), voltage regulator and audio and RSSI op amps. Incoming 45 MHz signals appearing at RX1_45MHz pass through the low-voltage high performance monolithic FM IF system.
The lower op amp (U23C) amplifies the signal from the low pass filter and applies it to the VCO via the VCOMOD output. Pots RV5 and RV5 are used to adjust maximum deviation. Injection Synthesizer The fractional synthesizer chip (U17) is the major contributor of the receiver and transmitter injection oscillator. This device contains the key components of a phase locked loop (PLL), including a prescaler, programmable divider, and phase detector.
Voltage regulator U6 powers the transmit driver and T/R switch diodes as controlled by the microcontroller. Voltage regulator VR4 provides a low noise 3.3-volt source for the radio electronics. Voltage regulator VR3 provides a low noise 5-volt source for the front end amplifiers (U4 and U7) , mixer (U8) and Receive audio OP amp (U9). F32700N25.
Section 2: Test Procedure Equipment List The following table lists the equipment required to perform the F32700N25Fixed Radio Factory Test Procedure: QTY DESCRIPTION 2 PC’s One for Fixed One for Base 1 Service Monitor – Communication Test Set 1 Digital multi-meter 1 DC power supply w/ ammeter, 13.
1 Ceramic tuning tool 1 ea IPMN p/n: 44010006 #0, #1, and #2 Phillips screwdrivers (generic) Programming and Configuring the Fixed Radio Once the appropriate equipment for performing the factory test is gathered, perform the following steps to program and configure an F32700N25 Fixed Radio: Step 1 Enter the following information on the Test Data Sheet (see Appendix B): Radio Serial number Date test being performed Tester's Name Step2 Connect the power cable with a voltage source of 13.
[From: 172.16.64.1] Frequency= 0, 799.000000 769.000000 814.000000 [From: 172.16.64.1] IP Address = 172.16.64.1 (VIU = 0.0.0.0, PC = 192.168.3.5) [From: 172.16.64.1] IPNC = 172.16.112.200 [From: 172.16.64.1] netmask = 255.255.255.0 [From: 172.16.64.1] Radio Mac Address = 00:08:ce:00:00:00 [From: 172.16.64.1] Hosting framing = SLIP no status messages [From: 172.16.64.1] channel spacing = 25000 [From: 172.16.64.1] Injection = HIGH SIDE, 45 MHz [From: 172.16.64.1] TX Power = 150 [From: 172.16.64.
[From: 172.16.64.1] Suspend Tx = 0 seconds [From: 172.16.64.1] DHCP Client disabled [From: 172.16.64.1] DHCP Server disabled [From: 172.16.64.1] diag message level = 0 [From: 172.16.64.1] TFTP options = 512 (block size), 0 (interval) [From: 172.16.64.1] Internal GPS not found [From: 172.16.64.
a. In the main menu select; Antenna, frequency 45 MHz, Reference level -20dBm, and span=100 kHz. b. In the RF Gen. menu select; Track, Offset frequency to; (receive frequency- 45 MHz) (For example 724MHz), Level -50 dBm, and Port/sweep RF out/invert. Step2 While monitoring C80 pin1, adjust the capacitors CV7, CV8, CV9, and CV11 to measure; flat, wide, and the maximum level of the signal. Step3 Set the monitor at RX mode; select the frequency: 769 MHz, Amplitude: -80, Atten: Hold Off, AFGen1 Freq: 1.
Equipment set up Step1 Connect cable from RF in/out port on service monitor to TX/RX1 input of mobile. Step2 Connect audio probe from HI audio in port on service monitor to Tp1 on digital board. Step3 Select the "RX" function, Set "RF Gen Freq" to the receive frequency of the mobile under test. (For example 769 MHz) Step4 Set other values as: Amplitude: Varies, Atten Hold: Off, AFGen1 Freq: 1.000 kHz, AFGen1 to: FM 5 KHz AFGen2 Freq: 1.
Step13 In IP Message, type the command “-40DBM = -40“. Receiver Calibration Test Step1 Inject a signal with amplitude of -95dBm into the TX/RX1 antenna port. Step2 Set the mobile to receiver1 using the command “receiver=1” Step3 In IP Message, type the command “noise”, the equipment must measure -95 dBm +/- 2. Transmitter Alignments Perform the following steps to adjust transmit data: Step1 Set the service monitor to TX.
Step 9 Turn potentiometer RV5 fully counterclockwise. Step 10 Turn on the modulated transmit signal using transmit command “x = 1400, 19” Step 11 Adjust RV6 for deviation of 4.9 kHz. Step 12 Select the right combination of polarity for transmit and receive signals TX+/RX+/- out of four possible choices. Step13 Using calibrated base station at the paired frequency, and monitoring the uplink received data quality on the base station's Hyperterminal screen.
Final Test A final test must be performed prior to shipping the F32700N25 Fixed Radio to the customer. This final test will verify that the timing characteristics are correct and that both transmit and receive data quality readings are consistently high. Perform the following steps for the final test: Step 1 Attach the 20dB 25Watt power attenuator to the transmit port of the radio. Step 2 Program the radio for full power operation. The tx power level setting can be found in the radio's Test Data Sheet.
will cause 100 pings, 500 bytes in length to be transmitted from the Fixed Radio and echoed by the IPNC through the base station: .>;Ping 192.168.3.3 -n 100 -l 500 -w 2000 Step 8 Set CRC =1 Enable on the radio Step 9 Verify the timing characteristics are identical to those in Downlink Hardware Timing Verification. Step 10 Reset CRC = 0 Disable on the radio Step 11 In IPMessage, type the ? command to radio. Copy the radio settings and paste them into the Test Data File.
Uplink Hardware Timing Verification Figure 2-1 below displays an oscilloscope plot of an uplink data message from the Fixed Radio to the base station. Channel 1 is connected to the base station's RSSI (XXX-12), channel 2 is connected to the base station's recovered modulation, and channel 3 is connected to the base station's modem chip select line. The scopes acquisition mode is high-resolution. Figure 2-1: Oscilloscope Plot of an Uplink Data Message F32700N25.
As seen in the above plot, the fixed radio's transmit carrier has ramped up to full power (channel 1) in just a few milliseconds. The recovered modulation (channel 2) is stable by this time. There follows a few milliseconds of quiet time followed by 12 milliseconds of symbol sync time. The recovered modulation from a Fixed Radio should look identical to this plot. The recovered modulation signal should be approximately 1.0 Volts peak-to-peak and should be centered at approximately 2.
The base station's microcontroller, upon detecting a step response in the RSSI (caused by the fixed radio's transmitter coming up to power), waits a period of time equal to the programmed value of the base station's carrier detect delay time. The microcontroller then instructs the modem to search for the modem synchronization preamble. When the base station instructs the modem to look for sync tones, the modem's CS line transitions low. This can be seen in the above plot.
The plot in Figure 2-4 is the same as before but now the scope is in the peak detect acquisition mode. After the Fixed Radio detects a step response in the RSSI (caused by a down-link transmission), the radio's microcontroller waits an amount of time equal to the programmed value of the "carrier detect delay time" then instructs the modem to look for frame sync. When the microcontroller instructs the modem to look for frame sync, it asserts the modem's CS line (active low).
time= 1000 ms, uplink size=41, downlink size= 41, timeout= 120 sec, select HI-Res, then select OK. Step 2 Observe the data quality readings on the IPMessage window of the PC connected to the radio using the V (for Verbose) command in the IPMessage program. With the fixed radio's antenna connected to receiver, verify the received data quality readings are consistently higher than 220. Data quality readings should also be verified at the base station using the V command on the Hyper-terminal window.
SECTION 3: FCC LABEL Section 3: FCC / IC Label F32700N25 Data Transceiver FCC / IC Label Placement F32700N25 Data Transceiver FCC Label F32700N25.
APPENDIX A: CIRCUIT BOARD LAYOUTS F32700N25Fixed Radio Digital Circuit Board + + + + + + + F32700N25Fixed Radio RF Circuit Board F32700N25-FCCRpt.
APPENDIX B: F32700N25 TEST DATA SHEET Program and Configure Radio Date Serial Number Firmware Revision Tester Adjustment / Alignment Procedures Receiver Injection Parameter Injection Frequency Error at RXINJ1(within +/- 100 Hz of exact injection frequency) Spec Measured +/- 100 Hz U13 pin 4 power level -3 to -5 dBm Receiver Parameter Audio DC Amplitude (1 kHz Test tone @ 5.0 kHz Deviation) Audio AC Amplitude (1 kHz Test tone @ 5.0 kHz Deviation) Distortion (1 kHz Test tone @ 5.
APPENDIX B: F32700N25 TEST DATA SHEET Transmit Section Parameter Transmit Modulation Deviation (4.9 kHz while transmitting 1400 character test message) Transmit Data Quality (While transmitting 1400 character test messages to the base station) Spec Measured 4.9 kHz 220 > Transmit Power Control Caution: Donot to exceed 5-Watts RF output power during this test. Transmit Power Setting Expected RF Out RF Out Watts 0 25 50 75 100 125 150 175 200 225 250 Do not to exceed 5 Watts of output power.
APPENDIX B: F32700N25 TEST DATA SHEET Data Quality Parameter Receiver Data Quality (While receiving 500 character “pings” from base station, 100 pings min, no errors allowed, CRC errors enabled) Spec Measured 220> Final Tests Uplink Final Parameter Transmit Frequency Error Transmit Modulation Deviation Spec +/- 100 Hz (Transmitting 19, 2000 character test message) 4.
APPENDIX B: F32700N25 TEST DATA SHEET Downlink Final Parameter Spec Measured Downlink Hardware Timing Verification Sync start (RSSI to CS first going low) Recovered Modulation Levels Frame Sync (From end of Sync to CS second time going low) Receiver Data Quality (While receiving 500 character "pings" from base station, 100 pings min, no errors allowed, CRC errors enabled) Message Success Rate LED Receiver 3.0 +/- 0.5ms 800 mV~ 2.5VDC~ 3.2 +/- 0.
