Maintenance Manual
Table Of Contents
- 1 OVERVIEW Marti GTX / GRX
- 2 TECHNICAL SPECIFICATIOINS
- 3 INSTALLATION
- 4 SET UP
- 4.1 Password Organization
- 4.2 Factory Default Passwords
- 4.3 Display Menus and Navigation
- 4.3.1 START & DEFAULT FIELDS
- 4.3.2 TRANSMITTER FIELDS & MENU TREE
- OPERATION MENUS
- Field #02: Direct & Reflected Power
- Field #04: Multiplex Signal Level (Output Modulation)
- Field #05: Left & Right Signal Level in dB
- Field #06: L & R Signal Level / Analog Meter
- Field #07: RDS / SCA Auxiliary Modulation Level
- Field #09: Internal Voltages
- Field #10: Temperature, Data and Clock
- SETUP MENUS
- Field #21: Local/Remote control setup
- Field #22: Transmission Frequency setup
- Field #23: Output Power setup
- Field #24: LF Modulation Input Level setup
- Field #25: Auxiliary Input Level setup
- Field #26: Limiter setup
- Field #27: Transmission Mode, and Pre-emphasis Setup
- Field #28: Reference Deviation setup
- Field #29: Display Contrast setup
- Field #30: Time & Date setup
- Field #31: Elapsed Time
- Field #32: Password Management
- Field #33: Alarm Setup and Display
- Field #34: I/O Pin Allocation and Logic Level setup
- Field #35: Synthesis setup
- Field #37: Ethernet & Lan setup
- 4.3.3 RECEIVER FIELDS & MENU TREE
- OPERATION MENUS
- Field #02: Receiver Frequency
- Field #03: Received RF Field and Muting
- Field #04: MPX Modulation and Reception Field
- Field #04Modulation of the Multiplex Signal
- Fields #05 & #06: L and R Decoded Output Levels
- Field #08: Stereo Pilot Frequency level
- SETUP MENUS
- Field #22: Frequency setup
- Field #24: LF Output Level setup
- Field #25: Receiver Muting setup
- Field #26: De-emphasis setup
- Field #28: Optional Boards Detection
- Field #33: Alarm setup and display
- Field #34: I/O pin allocation and logic level setup
- Field #36 Left & Right Level
- Field #37 Headphone Volume
- Field #39 Serial Number
- 5 SERVICE & CHASSIS DIAGRAMS
40
©2021 Broadcast Electronics
• Field #36 Left & Right Level
LEFT & RIGHT LEVEL
Nom: 60.9% + 6.0dBm
This field displays based on the advance stereo decoder card option detected. With this option, it is
possible to vary the output level of the stereo signal on the decoded rear outputs in steps equal to or
less than 0.1 dB over almost the entire range between -8.4 and +12.0 dBm. The percentage does not
refer to the output level but to the position of the internal electronic attenuator which has 256 steps.
• Field #37 Headphone Volume
HEADPHONE VOLUME
======= 08
Currently, Fields #36 and #37 are in the control software only. When the advanced stereo decoder
card and the relative headphone output are detected, the relative output level or volume can be
varied from here. Again, the variation is logarithmic for a more constant variation effect for each step
of the control. There are 16 steps of 3 dB each for a dynamic range of 45 dB between about 0.5 and j
100mW on a 16 Ohm headphone.
• Field #39 Serial Number
SERIAL NUMBER
__R20–9-515
This field is factory set displays at the end of the Setup Branch.