DYNAMIX G.703 E1-U/ FE1/ FE1-A Single G.703 E1 and Fractional E1 access units

G.703 E1-U/ FE1/ FE1-A

Single Port E1 and Fractional E1 Access Unit

Specification | Application | Ordering information

G.703 E1-U

G.703 E1-U/ FE1/ FE1-A Single Port E1 and Fractional E1 Access Unit
G.703 FE1/ FE1-A

The G.703 E1-U/ FE1/ FE1-A Access Units are single port access units for Unframed E1 or Fractional E1 services. Data Port rates are selectable via DIP-switches, for any multiple of 64Kbps up to 2048kbps (Fractional models only). User data is placed into the E1 frame, using only the required number of timeslots. Timeslot assignment is accomplished according to the Data Port speed and is selected by DIP-switches. The main E1 link may be clocked from the recovered receive clock (LBT), from the data port, or from an internal oscillator. The data channel interface is RS-530 standard. Adapter cables are available for V.35, X.21 and RS-449. The G.703 E1-U/FE1/ FE1-A's DIP and slide switches, located on the side and front panels, provide for easy setup and control of all functions.
The G.703/FE1-A model may be cascaded as an E1 Multiplexer. The unused channel timeslots will pass through E1/Rx to E1/Tx.

User's manual

Quick start

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LTU (Line Terminating Unit) built in unit.

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Single port access to E1 & Fractional E1 services.

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Interface conversion between G.703 and RS-530, RS-449 (V.36), X.21 or V.35.

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Data rate: DIP selectable sync Nx64Kbps to 2048Kbps. (FE1 and FE1-A only)

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Fully transparent signal conversion under unframed mode (2048Kbps).

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Clock Regeneration from incoming HDB3 data.

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Diagnostic Loopbacks both for G.703 and Data Port sides.

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All 1's monitor.

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Decoded data in NRZ form.

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Power: AC 110/230V 50/60Hz adapter to DC 9V

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Temp. range: 0o C to 50o C

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Humidity: 10% to 90% relative humidity, noncondensing.

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Dimensions: 19.2cm (L) x 10cm (W) x 2.4cm (H)

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Weight: 400g net

G.703
	Type Bidirectional (E1) 2048kbps.
	Line 4wire, 26-16AWG.
	Range Up to 1500 meter, 24AWG or better.
	Impedance RJ-45 120 ohm (balanced). BNC 75 ohm (unbalanced).
	"Pulse" amplitude 2.37V nominal for BNC, 75 ohm. 3.00V nominal for RJ-45, 120 ohm.
	"Zero" amplitude ±0.1V max.
	Clock freq. 2.048 MHz.
	Freq. Tracking ±50ppm.
	Jitter Complies with ITU-T G.823
	Connector RJ-45 or BNC.
	Complies with ITU G.703, G.704, G.706 and G.823.
	Frame format CAS/CCS,Unframe/Frame.
	CRC check CRC-4 enable/ disable.
	Line code HDB3.

Data port Interface
	Type RS-530/DB25 Standard or V.35, RS-449(V.36) or X.21 with adapter cable.
	Data rate 64kbps to 2.048Mbps.
	Connector DB25/F with adapter cable.
	Line code NRZ

LED Indicators
	DTE (green LED) Data port set to DTE mode.
	DCE (green LED) Data port set toDCE mode.
	TD (yellow LED) Transmit data.
	RD (yellow LED) Receive data.
	TEST (red LED) Loopback test mode.
	ALARM (red LED) Data loss, sync loss or Frame loss.
	T-Clk Loss (red LED) Transmit clock loss.
	R-Clk Loss (red LED) Receive signal loss

Application G.703 E1-U/ FE1/ FE1-A Single Port E1 and Fractional E1 Access Unit

G703E1-U/XXXY	where XXX = V35, X21, 530 or 449 Y = M (male) or F (female) Optional Cables V35 DB25-V35 Cable. X21 DB25-DB15 Cable. 530 DB25-DB25 Cable. 449 DB25-DB37 Cable.
G703FE1/XXXY	where XXX = V35, X21, 530 or 449 where Y = M (male) or F (female) Optional Cable V35 DB25-V35 Cable. X21 DB25-DB15 Cable. 530 DB25-DB25 Cable. 449 DB25-DB37 Cable.
G703FE1-A/XXXY	where XXX = V35, X21, 530 or 449 where Y = M (male) or F (female) Optional Cable V35 DB25-V35 Cable. X21 DB25-DB15 Cable. 530 DB25-DB25 Cable. 449 DB25-DB37 Cable.

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