The "MKR-BCN Modulation" dialog contains the parameters for configuration of the marker, and the COM/ID settings for the modulation.
Activates the marker beacon modulation.
Note: MKR-BCN modulation automatically deactivates the modulations AM, VOR, ILS-GS, ILS-LOC and ADF. In addition, the R&S SMA allocates the internal LF generator firmly to the MKR-BCN modulation, and disables the selection of the LF generator "Source" in the "LF Generator / Output" dialog.
Selects the modulation frequency of the marker signal.
The modulation operates with the frequencies: 400 Hz, 1300 Hz or 3000 Hz.
Remote command:Sets the modulation depth of the marker signal.
Remote command:Activates the pulsed marker.
If activated, the R&S SMA provides three markers at the output, with the on/off times shown in Table "On/Off time overview of the pulsed markers":
On | Off | |
---|---|---|
Outer Marker (400 Hz) | 375 ms | 125 ms |
Middle Marker (1300 Hz) | 375 ms 83 ms | 125 ms 83 ms |
Inner Marker (3000 Hz) | 83 ms | 83 ms (6 dots/sec) |
If deactivated, the R&S SMA provides uncoded markers at the output (key down).
Remote command:Activates an additional communication and identification signal (COM/ID signal).
Remote command:Reveals the detailed setting options for the COM/ID signal. Once the details are revealed, the labeling on the button changes to "Hide Details". Use this function to hide the detailed setting options display again.
Remote command:n.a.
Sets the coding of the COM/ID signal by the international short name of the airport (e.g. MUC for the Munich airport). (COM/ID signal).
The COM/ID tone is sent according to the selected code (see table of Morse below). The length of the Morse code can be varied. For selection standard time scheme, the selected dot length determines the setting of all other length parameters of the Morse code (dash length, symbol space and letter space) . For selection user time scheme, all length parameters of the code can be set independently.
If no coding is entered, the COM/ID tone is sent uncoded (key down).
Letter | Morse code | Letter | Morse code |
---|---|---|---|
A | . - | N | - . |
B | - . . . | O | - - - |
C | - . - . | P | . - - . |
D | - . . | Q | - - . - |
E | . | R | . - . |
F | . . - . | S | . . . |
G | - - . | T | - |
H | . . . . | U | . . - |
I | . . | V | . . . - |
J | . - - - | W | . - - |
K | - . - | X | - . . - |
L | . - . . | Y | - . - - |
M | - - | Z | - - . . |
- A dot (.) has a tone duration of 100 ms
- A dash (-) has a tone duration of 300 ms
- The time between two tones is 100 ms
- The time between two letters is 300 ms
ID code = MUC
The word length = 300+100+300+300+100+100+100+100+300+300+300+100+100+100+300+100+100 = 3100 ms
Sets the frequency of the COM/ID signals.
Remote command:Sets the period of the COM/ID signal in seconds.
Remote command:Sets the AM modulation depth of the COM/ID signal. The sum of subcarrier depth, VAR depth and COM/ID depth must be smaller than 100 PCT.
Remote command:Selects if the set dot length determines the dash length (= three times the dot length) (setting Standard) or if all length parameters can be set independently (setting User). (COM/ID signal).
Remote command:Sets the length of a Morse dot by means of seconds. The length of the dash (3xdot), space (=dot) and letter space (=3xdot) is also determined by this entry if time scheme standard is selected.
Remote command:(user time schema only)
Sets the length of a Morse dash by means of seconds.
Remote command:(user time schema only)
Sets the length of a symbol space by means of seconds.
Remote command:(user time schema only)
Sets the length of a letter space by means of seconds.
Remote command:Selects the variation of the carrier frequency via the rotary knob.
n.a.
Activates the Marker Beacon default setting. The RF frequency is set to 75 MHz.
Parameter | Value |
---|---|
State | Off |
Marker Frequency | 400 Hz |
Marker Depth | 95 % |
Pulsed Marker | Off |
COM/ID State | Off |
COM/ID Frequency | 1020 kHz |
COM/ID Period | 9 s |
COM/ID Depth | 10 percent |
RF Frequency | 75 MHz |
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