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
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Figure 2 – GTX Transmitter Rear Panel
All equipment inputs and outputs but RF monitor are located on the rear panel. They are:
1. The mains supply IEC320-type outlet, which incorporates the mains On/Off switch and
the fuses. The internal power supply operates in 115/230 VAC mains range without any
internal or external preset or switching.
2. An additional chassis screw for system earthing and a 24V-battery backup socket pair.
3. The RF antenna connector, N-type
4. The L & R stereo analog audio channels input on balanced XLR-type connectors (L input
is used only with internal Stereo Encoder option).
5. The AES/EBU stereo digital audio input on a balanced XLR-type connector which may be
used as an alternative to the analog input (this is a special option and may be used only
in conjunction with the internal Stereo Encoder option).
6. The wide-band external processed stereo or composite signal input on a grounded
unbalanced BNC connector
7. A frequency limited (20k 100kHz) auxiliary channel input on a grounded, unbalanced
BNC connector for a RDS or SCA signal.
8. An LF modulation output for monitoring, RDS external synchronization or re-
broadcasting purpose, BNC-type
9. A RS232 Dsub9 female remote serial control port, inverted wired.
10. A parallel control port, Dsub9 male type