User Instruction Manual MaxonCIC Corp.
FCC RF Exposure Compliance Requirements – The Federal Communications Commission (FCC), with its action in General Docket 93-62, November 7, 1997, has adopted a safety standard for human exposure to Radio Frequency (RF) electromagnetic energy emitted by FCC regulated equipment. Maxon subscribes to the same safety standard for the use of its products.
About your SD125E Series Data Radio The Maxon SD-125E Series of RF Link Modules from Maxon utilize the latest technology in their designs and manufacturing. Both the UHF and VHF models are Phase Lock Loop Synthesizer(PLL) / microprocessor controlled and offer 1/5 Watt(Low/High) programmable output power per channel with 16 channel capability. Multiple functions including 1200 to 9600 baud rates.
Specifications GENERAL Equipment Type ……………………………………………………… Data radio Performance Specifications………………………………………… TIA/EIA -603 / IC, RSS212 Band …………………………………………………………………… VHF(SD125VE_V2) / UHF(SD125VE_U) Channel Spacings …………………………………………………… 25 kHz, 12.5 kHz programmable RF Output Power …………………………………………………… 1 watt, 5 watt programmable Modulation Type …………………………………………………… F1D, F3E Intermediate Frequency …………………………………………… 45.
TRANSMITTER Specification Carrier Power: ………………………………………………………… Nom. Max. Min. Hi ………………………………………………………………………5W < 6W > 4.5W Low ……………………………………………………………………1W < 1.5W > 0.8W Sustained Transmission …………………………………………… Nominal conditions Time : 5 10 30 Sec. Power: >90% >85% >80% Frequency Error ……………………………………………………… < 0.75 kHz Nominal condition for UHF ±5.0 ppm Extreme condition for UHF Frequency Deviation: 25 kHz Channel Spacing…………………………………………… 12.
RECEIVER Specification Sensitivity (12dB Sinad) …………………………………………… Standard B.W < -118 dBm, Narrow B.W <-117 dBm @ Nom. Condition Standard B.W < -115 dBm, Narrow B.W <-114 dBm @ Extreme Condition Amplitude Characteristic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < ±3 dB Adjacent Channel Selectivity: 25 kHz Channel Spacing …………………………………………… 12.5 kHz Channel Spacing ………………………………………… > 70 dB @ Nom., > 60 dB @ Extreme Condition > 60 dB @ Nom.
Environmental (performance without degradation unless stated) Temperature…………………………………………………………deg C Operating ……………………………………………………………-30℃ to +60℃ Degradation Specified @Extreme Storage……………………………………………………………….-40℃ to +80℃ Recharging …………………………………………………………..-10℃ to+55 ℃ ESD …………………………………………………………………..
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MAXON SD-125 RF LINK MODULE The SD125E RF Link Module is the only item included in the shipping container.
MAXON SD-125 RF LINK MODULE The MaxonCIC SD125E Series of RF Link Modules from MaxonCIC utilizes the latest technology in its design and manufacturing. Both the UHF and VHF models are PLL (Phase Lock Loop Synthesizer) / microprocessor controlled, and offer one to five watts of power with 16 channel capability. Multiple functions including 1200 to 9600 baud rates, AC and/or DC audio coupling, GMSK and FSK modulation are standard in these fully programmable wide bandwidth RF Link Module units.
Busy Channel Lockout 16 Channels TX Time-out Power Save 1 / 5 Watt Programmable Output 12.5 / 25 kHz Programmable Channel Spacing Busy Channel Lockout The Busy Channel Lockout feature, when enabled, disables the transmitter when the receiving channel is busy and the user attempts to transmit. 16 Channels The SD-125 Series radio can store up to 16 channels within the same band. TX Time-out The TX Time-out feature, when enabled, limits the amount of time that the user can continuously transmit.
MAXON SD-125 RF LINK MODULE The SD125E Series radio requires the ACC-900E Programming Software, 9-15 VDC 200mA Power Supply and ACC2125 Programmer Interface Cable. Refer to the ACC-900E Programming for detailed information on programming the SD125E Series radio. The SD-125 UHF/VHF Receiver is by design, broad band covering UHF(400-430 MHz & 440-470 MHz & 470-490MHz) and VHF(148-174 MHz) and should require no special alignment, unless repairs are performed on the receiver portion.
TX Deviation and Balance Adjustment 1 Set the unit to a mid-frequency and input the TX data with 400 Hz standard audio level. 2 Increase the signal level to 20 dB from standard level. 3 Monitor the demodulated signal from service monitor. Adjust RV3 to make the monitored signal to be a balanced square wave. 4 Reduce input signal to the standard level and adjust RV2 for the standard deviation.
MAXON SD-125 RF LINK MODULE MAXON SD-125 RF LINK MODULE Surface Mount Components Surface mount components should always be replaced using a temperature controlled soldering system. The soldering tools may be either a temperature controlled soldering iron or a temperature controlled hot-air soldering station. A hot-air system is recommended for the removal of components on these boards. With either soldering system, a temperature of 700° F (371° C) should be maintained.
1 Grip the component with tweezers or small needle nose pliers. 2 Alternately heat the metalized terminal ends of the surface mount component with the soldering iron. If a hot-air system is used, direct the heat to the terminals of the component. Use extreme care with the soldering equipment to prevent damage to the printed circuit board (PCB) and the surrounding components. 3 When the solder on all terminals is liquefied, gently remove the component.
Pin1..... Audio In (Data RX) Pin2..... Audio Out (Data TX) Pin3.....PTT Pin4.....GND (Ground) Pin5.....B+ (8-18 Volts DC) Pin6..... Carrier Detect (Squelch) Pin7.....N/C No Connect Pin8.....
