NEC nd-20292 manual Pcm

ND-20292

CHAPTER	2
APRIL,	1990

Table 200-8 Power				Supply Outputs
DC VOLTAGE				lt%EiKY
1 -24V		+ 2V	1	4.5A	I
-5V	+	0.25V		1.2A
+5V	k	0.25V		8.OA

Table 200-9 Fuse Replacement

UNIT	FUSE #	1SPECIFICATION		1 DESCRIPTION			1 DIMENSIONS				1
PSE-AD-1	Fl	125V,	6.3A		AC INPUT		l/4”	x	1	l/4”
PSE-DD-1	-.. Fl	125V,	8.OA	DC	INPUT	(-48V)	l/4”	x	1	l/4”
RSGE	Fl	25OV,	0.5A	DC	INPUT	(-24V)	13164”	x		45164”
							(5mm	x	20mm)

NOTE: All fuses used are normal blown glass tube or ceramic type. Do not use slow blow fuses.

220.13 ENVIRONMENTAL CONDITION

1.Temperature

a. Operating:		32”F-104”F(O”C-40°C)
b. Recommended long		term:	50”F-90”F(10”C-
32.2”	C)
2. Operating	Humidity:		10% - 90% relative,
			non-condensing

220.14 OUTSIDE LINE TYPE

a. Two wire, loop start lines

b. Two wire, ground start trunks

c. Two wire, Loop Dial, DID lines (DialPulse only)

d. Two wire, E&M Tie lines (type I or V, Dial Pulse or DTMF)

e. Four wire, E&M Tie lines (type I or V, Dial Pulse or DTMF)

e. Interface		card
	(COI-E(	1, ESI-E(	>, etc.):	4 bit	1 chip
				microprocessor
f.	Multiline	Terminal:		4 bit	1 chip
				microprocessor
g. DSSBLF		Console:	4 bit 1 chip	microprocessor
h. Directory		Multiline	Terminal:	4 bit	1 chip
				microprocessor
i.	Remote	Administration
	Adaptor:		8 bit	microprocessor

2.Transmission a. Data length:

From	Multiline Terminal
to ESI-E(		1:	32	bits
From	ESI-E( ) to
Multiline		Terminal:	32	bits

b. Data

transmission

rates:

220.15

NETWORK

AND

CONTROL

Between ESI-E( 1and

1. Control

Stored

program

with distributed

Multiline

Terminal:

256k

bitslsec.

a. Control:

processing

c. Data

transmission

pairs:

To

Multiline

Terminals

b. Central

Processor:

16 bit

microprocessor

and EDE-SO-( ):

2 pair data

c. Clock:

8 MHz

d. Scanning

time

for

each

Multiline

Terminal:

32 ms.

d. Module

Processor

4 bit 1 chip

(TSW-E,

TSW-EB

& MMC-El:

3. Network

microprocessor

TDM switching

PCM

(pLaw1

200-9