Advertisement
Quick Links
Model: RLR-465NX
™
UHF, NXDN
Digital Liberty Repeater, 10 W, 6.25 kHz
ALIGNMENT AND DUPLEXER TUNING INSTRUCTIONS
FOR USE BY AUTHORIZED SERVICE/MAINTENANCE PERSONNEL ONLY
Ritron Pub: RLR-465NX-ALIGN
01/21
© 2021 Ritron, Inc. All rights reserved.
Ritron, Inc. is a trademark of Ritron, Inc.
NXDN™ is a trademark of JVC Kenwood Corporation
Call 800-USA-1-USA
For the right Wireless Solutions for your communication needs.
P.O. Box 1998 · Carmel, Indiana 46082-1998 · Ph: 317-846-1201 · Fax: 317-846-497
Email: ritron@ritron.com · www.ritron.com
Have questions? Call 800-USA-1-USA (800-872-1872) or visit our website at
www.ritron.com
Advertisement
Related Manuals for Ritron RLR-465NX
Summary of Contents for Ritron RLR-465NX
- Page 1 FOR USE BY AUTHORIZED SERVICE/MAINTENANCE PERSONNEL ONLY Ritron Pub: RLR-465NX-ALIGN 01/21 © 2021 Ritron, Inc. All rights reserved. Ritron, Inc. is a trademark of Ritron, Inc. NXDN™ is a trademark of JVC Kenwood Corporation Call 800-USA-1-USA For the right Wireless Solutions for your communication needs.
- Page 2 DISASSEMBLY Remove the power and interface connectors before disassembling the unit. The unit is disassembled for alignment/service by removing the six T-10 torx screws from the end plate with the antenna connector as indicated by the white arrows. The cover with the other end plate is then slid off. DUPLEXER The duplexer allows the Repeater to simultaneously transmit and receive.
- Page 3 Tuning Posts PRELIMINARY 1. When aligning the RLR-465NX Repeater with the PC programming Software, NXDN mode is disabled so that Analog Service Monitors can be used for the RF adjustments and measurements. The analog adjustments have been correlated to NXDN performance so that once the repeater is aligned for analog operation it will be also automatically aligned for NXDN once the Repeater is returned to normal NXDN operation.
- Page 4 9. a. Connect +13.8 Vdc to the DC Input of the Repeater. For the DC Power Jack, the center connection is positive(+) and the outer sleeve is negative(-). b. Connect the USB Connector of the PC Programming Cable to the mating USB Connector on the radio assembly. C.
- Page 5 4) Adjust “RX Freq Trim” to within +/- 50 Hz of LO Frequency on the Frequency Counter. 5) Click the “Main” tab. RX Filter Alignment and Sensitivity 6) Set signal generator RF output level to -118 dBm with 1.5 kHz deviation of a 1 kHz tone. 7) Connect the SINAD meter to Pin 6(de-emphasized output) and Pin 1(Gnd) of the RJ-12 connector.
- Page 6 11) Adjust the “IF Trim” for equal amplitude of the noise on the top and bottom of the demodulated and band pass limited square wave as shown in the photo below. This adjusts the 43.2 MHz 2nd local oscillator frequency to center the signal in the 450 kHz pass band.
- Page 7 b. Adjust the “Auto alignment- Upper Edge Balance” slider bar to yield flattest square wave on the transmitter recovered audio. Click the “Transmit” button to stop transmitting. c. Repeat this for the “Auto alignment- Lower Edge Balance”. The Transmit Frequency is 450 MHz, the VCO tuning voltage at TP201 should measure 0.8 +/-0.2 Vdc.
- Page 8 6) Select “Low Power on repeater frequency” and click the “Transmit” button. Adjust C206 for 2 Watts. This will be the reduced power output should the repeater PCB temperature ever exceed 55 °C. This power output will persist until the temperature drops 52 °C. Click the “Transmit” button then the “Program Repeater” button to save the settings. TX/RX Sensitivity De-sense 7) Click on the “Main”...
- Page 9 3. Be sure that the connectors and LEDs line up with the openings at the closed end of the repeater enclosure. Insert and tighten the six T-10 torx screws into the end plate with the antenna connector as indicated by the white arrows. 4.
- Page 10 RLR-465NX ALIGNMENT POINTS RX SMB connector RX BPF tuning caps TP101 RX VCO C150 TP102 4 Amp fuse TX SMB connector RF power adj C206 TX VCO C296 TP201 J308...
Need help?
Do you have a question about the RLR-465NX and is the answer not in the manual?
Questions and answers