Kenton Research - Design, development and manufacture of telecom equipment, transformers and private circuit signalling equipment.

Conversions

GEN-GEN				SSAC15A
Magneto Signalling				or manual 2280Hz
ASC300				ASC300
Manual E&M	SSDC5A	SSAC15A	Manual 2280Hz	Manual E&M	SSDC5A	GEN-GEN

The Kenton Research analogue signalling converter ASC300 provides conversion of a single circuit from gen-gen (magneto) signalling to SSAC15A or manual 2280Hz signalling or to 2-wire audio plus E & M with manual or SSDC5A signalling. The unit can also convert from SSAC15A or manual 2280Hz signalling to SSDC5A or manual E & M signalling with 2-wire or 4-wire audio. The converter features simple installation and setup with a multicoder for major configuration settings and single links for other options. An internal overload protected source of ring current is incorporated and the unit is fitted with dc input current limiting. The ASC300 E & M leads physically interface to UK SSDC5A equipment and they can be link configured to operate with North American type 1 and type 2 standards. The ASC300RM is a plug in 48V dc powered extended eurocard module for mounting in the 19 inch mounting shelf 12E7K or equivalent BABT approved enclosure. The ASC300SA is a wall mounted unit mains powered from the supplied PU246D plug top power supply.

APPROVED FOR CONNECTION TO
THE TELECOMMUNICATIONS NETWORK

ASC300 SPECIFICATIONS

GEN INTERFACE	Port	600 ohm 2-wire
		maximum level to line 0dBm
		4dB nominal loss to 2280Hz port
		3dB nominal loss to E & M port 2-wire audio
	Signalling	detector sensitivity 20v RMS 17-25 Hz
		call signal 65v RMS @ 25 Hz nominal
E & M INTERFACE	Audio	600 ohm link selectable 2 or 4-wire
		maximum level to line 0dBm
		4-wire audio 0dB nominal loss to 2280Hz port
		2-wire audio 4dB nominal loss to 2280Hz port
	Signalling	link selectable for SSDC5A or manual operation
		idle - open circuit
		signal - earth via 1200R/1uF NSF or direct
		SB (Signal battery) connected to -48V or open
		SG (Signal ground) connected to 0V or open
2280Hz INTERFACE	Line Circuit	600 ohm 4-wire 4dB gain
		provision to increase gain by 4dB for direct connection
		audio output level -4dBm nominal
		audio input level 0dBm nominal
	Signalling	link selectable for SSAC15A or manual operation
		output tone frequency 2280 +/- 1Hz
		output tone leve -24 / -14 dBm +/- 1dB
		detector operate level -3 to -29dBm
		AC15A - tone on idle both directions
		manual - tone on during signalling
PHYSICAL		ASC300RM	ASC300SA
	Power	-43 to -57V dc @ 140 mA	220 to 250V 50-60 Hz
	Size	100 x 220 x 35.5 mm	160 x 135 x 45mm
	Weight	0.26kg	0.5kg
	Connector	DIN41612 male row a fitted	insulation displacement IDC
	Mounting	11024B 3U 19 inch shelf	stand alone wall mounted
APPROVAL	BABT	NS/4271/2/T/605092	NS/4271/2/T/605091