RAD Data comm ASMi-31 Master Clock, External clock The master clock uses, Data to the line

Chapter 1. Introduction		ASMi-31Installation and Operation Manual
Clock Source	Master Clock	Internal clock – The master clock uses its own
		internal crystal when transmitting or receiving
		data from the DTE interface and from the line.
		External clock – The master clock uses the
		clock derived from the digital interface to
		receive data from the DTE and for transmitting
		data to the line.
		If the digital interface is X.21, the same clock is
		used to transmit and receive data.
	Slave Clock	Loopback timing – The clock is recovered
		from the line signal and used to transmit and
		receive data from the DTE interface to the
		line.
Control Signals		Jumper-selectable:

•

•

RTS to DCD DTR to DSR

Diagnostics	Loopback Tests	Remote Digital Loopback – REM activated by
		pin in DTE interface supported by the
		appropriate standard
		Analog Loopback – Local (ANA defined by
		the standard as LLB) activated by pin in DTE
		interface supported by the appropriate
		standard
Indicators	PWR (green)	Power
	RTS (yellow)	Request To Send (Circuit 105)
	TD (yellow)	Transmit Data (Circuit 103)
	RD (yellow)	Receive Data (Circuit 104)
	DCD (yellow)	Data Carrier Detect (Circuit 109)
	LOS (red)	Loss of signal
	ERR (red)	Error is detected in received configuration
		information
	TEST (red)	A test is active
Power	AC Voltage	115 VAC or 230 VAC (10%), 5W
	Frequency	50 or 60 Hz (47 to 63 Hz)
	DC Voltage	-48 VDC (-36 to -72 VDC)
	Power Fuses	0.1A, slow-blow for 230V

1-6 Technical Specifications

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