The DTA-SDH/155 transmission analyzer is a palm, graphic, color-LCD SDH/PDH measuring
instrument designed for field use in analysis and maintenance of STM-1(155Mbps) and E1(2.048 Mbps)
lines. The DTA-SDH/155 has optic and electric port, evaluate and analysis result according to ITU-T
G.821, G.826, G.828, G.829, M.2100, M.2101. Its easy operation, light weight, long working hours, low
price, may be the ideal solution for field work.
Functional feature
�� For the analysis and evaluation of SDH and PDH
networks and equipment up to 155Mbps.
�� According to ITU.T G.821, G.826, G.828,G.829,
M.2100, M.2101.
�� Tandem Connection Monitoring (TCM) and APid
tests.
�� Support pointer adjustment test.
�� Automatic Protection Switching (APS).
�� Round trip delay measurement (STM-1 and E1).
�� Scan VC4, VC3, VC12 tributary signals.
�� Update through USB.
�� Operate by Key-press or touch-screen.
Specification
�� Electric port: unbalance, ITU-T G.703.
�� Optic port: SFP（1310、1550），ITU-T G.957.
�� Support Frequence offset ±99 ppm,
step:1ppm.
�� Clock source: internal、external and recovery.
�� PRBS: 2n-1(n=9,11,15,20,23), all ”1”, all ”0”.
�� Customer can edit inserting and analyzing
overhead.
SOH: J0, B1, B2, E1, E2, F1, D1, D2, D3, D4,
D5, D6, D7, D8, D9, D10, D11, D12, S1, M1
POH: J1, B3, C2, G1, F2, H4, F3, K3, N1, V5,
J2, N2, K4
�� Pointer sequence adjustment according to
ITU-T G.783.
�� Monitor alarm and performance according to ITU-T G.783、G.958.
SDH: LOS，AIS, OOF, EFAS, LOF, RS/HP/LP TIM, MS/ AU/TU AIS, MS/HP/LP RDI, AU/TU LOP,
HP/LP UNQ , TU LOM , HP/LP PLM, RFI MS-/HP-/LP-FERF
PDH: LOF, RAI, CRCL, MAIS, CASL, MRAI.
TCM: UNQ, LTC, RDI, ODI, TIM, AIS.
�� From D1-D3, D4-D12, E1, E2, F1 transparent channel, insert/pick-up PRBS.
�� ITU-T mappings for SDH, including the concatenated ones.
PRODUCTS 
