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General| Brand | RFL |
|---|---|
| Model | 9785 |
| Category | Touch terminals |
| Language | English |
Ensures proper grounding to reduce shock hazard and optimize performance.
Do not operate in explosive atmospheres or wet/damp areas to prevent safety hazards.
Internal adjustments by qualified personnel only; disconnect power before work.
Covers selecting transmit frequency, power level, and keying modes.
Details line termination, receive frequencies, and external meter configurations.
Explains transmitter fail detection and alarm configuration using AM Logic Module switches.
Provides steps for basic adjustments and measurements to ensure proper operation.
Provides procedures for removing and replacing circuit board modules and I/O modules.
Details removal and replacement procedures for the power supply module.
Explains removal and replacement procedures for I/O modules mounted at the rear.
Provides instructions for replacing the input fuse on the power supply I/O module.
Monitors carrier inputs, generates command signals, and provides SOE status.
Details controls and indicators, including LEDs, DIP switches, and test points.
Describes the DDS transmitter, amplitude modulation, and status LEDs.
Details how to adjust output power using gain stage U3A and potentiometer R23.
Provides voltage/current gain, detects transmit signal loss, and has adjustable output impedance.
Describes adjusting amplifier gain with Potentiometer R2 to vary output signal level.
Details adjusting output impedance to compensate for field installation variations.
Details the 50W amplifier mounted on the front cover with a green LED indicator.
Instructions for connecting ground wire for surge current protection.
Details setting jumpers and switches for proper system operation.
Details jumpers, connectors, and potentiometers on the Power Amplifier circuit board.
Details configuring Tx Filter jumpers for bandwidth and center frequency.
Details jumper settings for selecting 50W or 100W operation.
Details jumper settings for impedance matching, balancing, and 2W/4W operation.
Details configuring Rx Filter jumpers for bandwidth and center frequency tuning.
Details jumper settings on the Balance Board for 50W systems.
Details jumper settings on the Balance Board for 100W systems.
Reduces harmonic content of output signal; passive, rated for 10 watts.
Describes seven, three-position jumpers for selecting passband frequency.
Shifts RF signals to 24 kHz for processing; contains channel filter and DIP switches.
Details controls and indicators, including jacks, potentiometers, switches, and test points.
Configures center frequency of receive signal using SW1 and SW2.
Contains narrowband filter, carrier detect circuit, signal level indicator, and optional voice filter.
Status monitor card; monitors input status, records events, lists communications parameters.
Details jumpers, test points, and switches on the SOE/IRIG-B module.
Allows programming using APRIL commands via PC/terminal; 'P' command enters password-protected menu.
Describes using 'D' command to view settings and '#' to edit specific parameters.
Uses 'S' command to access SOE log, tracking state changes and conditions.
Requires password for access to Programming Menu settings and parameters.
Details using front panel switches for display modes, test times, running tests, and making requests.
Provides steps to set automatic test times using DISPLAY SELECT and UP/DOWN switches.
Explains accessing module via RS-232 port using a terminal or PC with APRIL.
Uses 'D' command to view parameter settings; programming mode is password protected.
Programs module using APRIL 'P' command; enters password-protected programming menu.
Changes password using 'C' command, requires super-user password 'BCCE'.
Uses 'D' command to view current parameter settings.
Saves new settings using 'SV' command; changes take effect after saving.
Uses 'T' command to send list of test commands to terminal; password protected.
Changes test mode password using 'C' command, requires super-user password.
Uses 'T' command to run tests; lists possible test routines with descriptions.
Provides steps for checking carrier output level, connecting dummy load, and verifying waveform.
Details functional test procedures for transmitter and receiver sections.
Details functional test procedures for transmitter, including frequency settings and switch banks.
Provides steps for receiver functional test, referencing Section 22.3.
