Select: Config: Mode - Comtech EF Data SLM-5650 Installation And Operation Manual

SLM-5650 Satellite Modem
Front Panel Operation
Select: CONFIG: Receive: Buffer
Buffer:
Size:00001024
Src
Center
Size
Mode
Framing:
Select: CONFIG: Receive: Misc
Rx Misc:
Select Clk/DataPhase, BitOrdering or Eb/No Threshold, then press [E].
ClkPhase
DataPhase
BitOrdering
Eb/No
Threshold
4.3.1.3

Select: CONFIG: Mode

Src:RX-Sat Center: Y/N
Mode:Bits
Rx-Sat, Int, or Tx-Terr. Rx-Sat is the recovered clock from the received
carrier. Int is a clock synthesized from the modems reference (internal
or external).
Tx-Terr is the transmit clock supplied by the user.
Yes or No, the buffer is automatically centered when the demodulator
locks. By selecting center, the buffer can be manually centered.
If in Bits, the minimum size is 128 to a maximum of 4,194,304 in 16 bit
steps.
If in milliseconds (mSec), the minimum size is 2 to a maximum of 60 in
1 mSec steps.
Bits or mSec, buffer size format.
If selected this allows the buffer to operate in a plesiochronous mode
when running externally framed data.
If buffer mode is set to mSec and Rx data rate is 1544 kbps (T1), 2048
(E1), 6312 kbps (T2), or 8448 kbps (E2) then the selected framing card
will be used to calculate the required buffer size so that the buffer will
slip properly.
G704 or None
T1
G704 or None
E1
T2 G704, G743, G747, or None
G704, G742, G745, or None
E2
While the framing selections show up in the menus regardless
of which interface is plugged in, they will only have effect if a
G.703 interface is plugged into the modem.
IMPORTANT
Clk/DataPhase
Eb/No Threshold
Rx Clock Phase, Normal or Inverted
Rx Data Phase, Normal or Inverted
Rx Bit Ordering (for BPSK compatibility), Standard or Non-Standard
0.1 to 20 dB in 0.1 dB steps, this sets an Eb/No threshold such that when the
received carrier Eb/No is less than the set value, the Rx threshold alarm is set.
Framing (
BitOrdering
4–15
Revision 2
MN/SLM5650.IOM
E)
( E)