Premier Mounts CDM-600 Configclocks RX BUFFER/CLOCK, Clk= Rx-Sat Rx-Sat,Tx-Terr,Ext-Clk,Ins

CDM-600 Satellite Modem	Revision 7
Front Panel Operation	MN/CDM600.IOM

CONFIG:CLOCKS: RX BUFFER/CLOCK

CLK= RX-SAT (RX-SAT,TX-TERR,EXT-CLK,INS)

BUFFER-SIZE = 00016bytes(00002ms) CENTER

Use the [←] [→] arrow keys to select one of the three parameters on the screen to edit. Edit the RX clock options using the [↑] [↓] arrow keys, then press ENTER

RX-SAT	Sets the Receive buffer clock source to the satellite clock (The receive buffer will
	be bypassed.) Note: This will fix the buffer size to minimum.
TX-TERR	In this timing mode,	data is clocked out of the receive buffer using the external
	transmit clock.
EXT-CLK	In this timing mode,	data is clocked out of the receive buffer using an External
	clock.
INS	Sets the buffer clock to the Insert stream (INSERT mode only).

Buffer-Size indicates the size, in bytes, of the Plesiochronous/Doppler Buffer. In parentheses after this, the size in milliseconds is shown. Edit each digit of the buffer size using the [↑] [↓] arrow keys. Press ENTER.

Note: When the RX data rate is set to one of the four G.703 rates, the minimum buffer size and step size are limited to the value shown in the table below. In addition, Insert Framing follows the same rule, regardless of n x 64 data rate, depending upon whether the Insert Type is T1 or E1. If none of these cases is true, the minimum buffer size is 16 bytes with a step size of 2 bytes.

RX Data Rate	Buffer Step Size
1544 kbps (T1) or open network D&I at T1	1158 bytes or 3 milliseconds for D4
	(6 milliseconds for ESF)
2048 kbps (E1) or open network D&I at E1	1024 bytes or 4 milliseconds
D&I++ at n = 1, 3 or 5	720 bytes
D&I++ at n = 2, 6 10 or 15	1440 bytes
D&I++ at n = 9	2160 bytes
D&I++ at n = 4, 12 or 20	2880 bytes
D&I++ at n = 18	4320 bytes
D&I++ at n = 7 or 21	5040 bytes
D&I++ at n = 8 or 24	5760 bytes
D&I++ at n = 11	7920 bytes
D&I++ at n = 13	9360 bytes
D&I++ at n = 14	10080 bytes
D&I++ at n = 16	11520 bytes
D&I++ at n = 17	12240 bytes
D&I++ at n = 19	13680 bytes
D&I++ at n = 22	15840 bytes
D&I++ at n = 23	16560 bytes
6312 kbps (T2)	1578 bytes or 2 milliseconds
8448 kbps (E2)	528 bytes or 0.5 milliseconds

6–20