Check the listing for details. SPIRENT SX/12-1 T1 E1 Data Link Simulator. Condition: Seller refurbished. Listed at 980.00 USD. SPIRENT SX/12-1 T1 E1 Data Link Simulator Full-duplex digital link, Internal,external,and asynchronous data channel clocking, Bypass,inward or outward loopback,keyboard lock,and self test, Fully programmable test sequences, Data Bit Rate:100 to 2,048,000 bps. Burst Error Length:0 to 16,777,215bit(1bit increments) or 0 to 9,999ms(1ms increments), Burst Error Density:0 errors per bit,1E-9 to 1 error per bit(1E-9 increments), Burst Gap Length:1ms to 99,999,999ms(1ms increments), Burst Modes; fixed gap length/fixed burst length, random gaplength/fixed burst length, fixed gap length/random burst length, random gap length/random burst length, manual burst trigger/fixed burst trigger, manual burst trigger/random burst length, Power requirements:115 or 230VAC,+-10%,47-66Hz,230W Option : No Accessory : Japanese-Manual,English-Manual,SX12 DS1(T1) Module,Blank Pannel, Photo is real item our stock for sale. Warranty: one month 5days return right