ETU01-U Single Modular Port Unframed E1 CSU/DSU
The ETU01U stand-alone DSU/CSU is a digital access unit for Unframed E1 service termination. The ETU01U data channel supports 2.048Mbps, for a line attenuation of up to 43 dB on twisted pair or coax cable. This provides an approximate operating range up to 2km (using 22AWG).The ETU01U front panel sports status LEDs for monitoring both the CSU and DSU condition and push button switches for initiating local and remote loopback with integral BERT. The ETU01U features user replaceable data port modules for a number of interface standards; including Ethernet bridge, router, V.35, X.21, RS-530, and RS-449. The ETU01U fully meets El specifications including ITU-T G.703, G.706, G.732, and G.823.
Features:
- Supports Unframed E1 (2.048Mbps)
- Removable interfaces, support V35, X21, RS530, RS449, NRZ, Ethernet Bridge and Router
- I/O connectors on rear panel
- Multiple clock source selection (Internal or External: E1 recovery, DTE or DCE)
- Built-in BERT with V.54 diagnostic capabilities for performing local and remote loopback
Specifications:
G.703 E1
Framing: Unframed
Line Code: AMI/ HDB3
Bit rate: 2.048Mbps (clear channel)
Relative receive level: 0 to -43dB
Transmit level:
- Pulse Nominal - 2.37V ±10% for 75ohm
- Amplitude Nominal - 3.00V ±10% for 120ohm, Zero amplitude ±0.1V
Jitter performance: According to ITU-T G.823
Connectors: BNC(unbalanced), RJ-48(balanced)
Clock modes:
- Clock mode 0 Receive & transmit clock (DCE1) (recovered) to the sync. DTE
- Clock mode 1 Receive & transmit clock (DCE2) (internal oscillator) to the sync. DTE
- Clock mode 2 Receive clock to the sync. and transmit (DTE1) clock from the sync. device
- Clock mode 3 Receive and transmit clock from the (DTE2) sync. DCE (from ETC and ERC pin)
- Clock mode 4 Receive and transmit clock from the (DTE3) sync. DCE (all from ETC pin)l
Test Switches: Digital local loopback, Analog local
Diagnostics: Digital local and remote loopback, Analog local loopback, Test pattern
Indications: LEDs (Power, TD, RD, RTS, DCD, Singal loss, Sync loss, Alarm)
Standard: ITU-T G.703, G.706 and G.732
Power Input: AC: 90~250VAC, DC: 18-72 VCD
Power Consumption: 10W
Dimensions: 250 x 195 x 45mm (D x W x H)
Weight: 1.5kg
Temperature: 0~50°C (Operating) ,-10~70°C (Storage)
Humidity: 10~90% non-condensing
Certification: CE, FCC, RoHS
MTBF: 57,000 hrs (25°C)
