SME SOURce:REFLex25
1038.6002.02 3.97 E-13
[:SOURce]:REFLex25:SI | SINFormation:RCHannel:SPEed 800 | 1600 | 6400 | 9600 bps
This command selects the bit rate of the reverse channel. 800bps, 1600bps, 6400bps and
9600bps are available. The set value is transferred to the receiver and has no further effects.
Example: SOUR:REFL25:SI:RCH:SPE 800 bps *RST value is 800 bps
[:SOURce]:REFLex25:SI | SINFormation:FSPacing 0 to 102350 Hz
This command specifies the frequency spacing according to the formulas for FREQ given above.
This parameter applies both to the forward and the reverse channel. Valid values are 0 to
102350Hz, in steps of 50Hz. *RST value is 6250 Hz
Example: SOUR:REFL25:SI:FSP 589 Hz
[:SOURce]:REFLex25:SI | SINFormation:SCIBase 0 to 127
System configuration information (SCI) frames are sent within each cycle of 128 frames. Their
positions within the cycle are calculated according to
INDEX = SCI BASE FRAME + 2
SCI COLLAPSE MASK
* i for all i until INDEX exceeds 127.
:REFL25:SI:SCIBase and :REFL25:SI:SCICollapse are transferred to the receiver in the
respective block information words. *RST value is 0
Example: SOUR:REFL25:SI:SCIB 99
[:SOURce]:REFLex25:SI | SINFormation:SCICollapse 0 to 7
See explanation under :REFL25:SI:SCIB. *RST value is 7
Example: SOUR:REFL25:SI:SCIC 5
[:SOURce]:REFLex25:ERRor
The SME allows for providing a 32-bit word of the transferred message with bit errors for test
purposes. The following parameters specify the bits to the falsified and the position of the
erroneous word within a frame. The bit errors are incorporated before the individual blocks are
subjected to interleaving (see ReFLEX documentation).
[:SOURce]:REFLex25:ERRor:MASK 0 to 4294967295
This command sets the bits to be falsified. The set decimal number is converted internally into a
32-bit binary number. This binary number is XORed with the original message word. Each bit of
the ERROR BIT MASK set to 1 causes the respective bit to be inverted in the transmitted word.
Example: SOUR:REFL25:ERR:MASK 4967295 *RST value is 0
[:SOURce]:REFLex25:ERRor:WORD 0 to 351
This command indicates the position of the erroneous word. The erroneous word appears in each
frame. Counting starts with the first word of block 0 of each frame, i.e. immediately after the sync
partition; the sync partition cannot be falsified. Values from 0 to 351 can be set. Depending on the
modulation, a frame (without sync partition) consists of 88, 176 or 352 words. If an excessive
value is entered for REFL25:ERR:WORD for the modulation set, no bit errors are produced.
Example: SOUR:REFL25:ERR:WORD 176 *RST value is 0
To Next Page
Loading...
