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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©2021 Broadcast Electronics
• OPERATION MENUS
• Field #02: Receiver Frequency
Rx #0 232.500MHz
t=-01.7kHz F= -52dBm
This display shows the frequency, the tuning of the received signal (T) in kHz with respect to the
nominal frequency within just over ± 100kHz and the field strength (F) in dB. In the absence of
received signal (Sin <-90dBm) the tuning indication is random. The signal is properly tuned when
"TUNING" is within ± 6.0 kHz.
The "Rx [N]" parameter, with N between 0 and 6 shows the frequency set for the device in the case of
the optional control function in the N + 1 system. The number 0 is the default.
• Field #03: Received RF Field and Muting
FIELD -58dBm
MUTING OFF
Here the received signal field in dBm is displayed and whether or not the muting function is active.
• Field #04: MPX Modulation and Reception Field
## |
MPX / FIELD -52dBm
This field displays composite modulation (MPX) via an analog moving bar and received field strength
in dBm.
• Field #04Modulation of the Multiplex Signal
MPX 75kHz +0.0dB
############ |
This field shows the actual frequency deviation of the received signal due to the whole multiplex
modulation, as shown on the corresponding transmitter field.
Note that the deviation reading is very precise with clean channel reception. However, in the
absence of received field or with very week signal, noise will affect the accuracy, which will show a
much wider deviation than actual.
• Fields #05 & #06: L and R Decoded Output Levels
LEFT level - 3.0dB
RIGHT level - 4.5dB