NEC Electra 616 General Installation Manual

NEC
Electra – 616
(With Addendum-001) 

c 
110 
120 
130 
140 
150 
160 
CONTENTS 
Page 
Installation Site Requirements . . . . . . . . . . . . . . . . . . . . . . . 1100-1 
110.1 Physical Environment of Equipment 
Electrical and Grounding Requirements 
. . . . . . . . . . . . . . . . 100-l 
120.1 AC Power Requirements 
120.2 Grounding Requirements 
Other 
Considerations . . . . . . . . . . . . . . . . . . . . . . . 
130.1 Electrical Noise Generators 
130.2 Pre-installation Site Survey 
130.3 Additional Equipment 
Specifications . . . . . . ....

p SECTION 100 GENERAL INSTALLATION 
110 
Installation Site Requirements 120.2 Grounding Requirements 
110.1 Physical Environment of Equipment 
The following conditions should be met at the site 
chosen for mounting the central equipment (Key Service 
unit>. 
The KSU must be well-grounded. If a good conduit 
ground is not present at the dedicated AC outlet, the 
following steps should be taken: 
1. The KSU should normally be wall-mounted to protect 
against accident or flooding. Where possible 
use of a...

/ 
130 Other Consideratiaons 
130.1 Electrical Noise Generators 
Certain 
equipment, such as welding machines, 
thyrister-driven power supplies, large electrical motors, etc. 
generate electrical noise. As a stored program machine the 
Electra-616 System is vulnerable to this noise. When this 
type of machine is present at an instahation, the following 
precautionary steps are urged: 
1. Locate KSU, telephone sets, and cabling away from 
these machines. 
2. If cables must pass near these machines, use...

I 3. Fuse Replacement 
Replace fuses in accordance with Table 140- 1. 
Table 140-l Fuse Specifications For PS-6-1 and KSI-S 
. . 
‘*a 
Note 1: FI is 1/4”x I-1/4”size normal blown glass tube or 
ceramic fuse. Buss 3A G 125 V., 4A fuse. 
Note2: KSI-S Fl - F8 are 13/64” c 45164” (S mm x 20 
mm) size normal blown glass tube fuse. Buss GMA 
I25 V., O.SA fuse. 
Do not install any ‘slow blow” fuses in the ES-6-I 
KSU. 
140.3 Power Requirements 
1. AC Input 
- 117V AC f 1 O%, SO or 60Hz + 1 O%, single phase 
....

2. Network 2) Intercom call 
- Matrix: Single stage, non block- 
ing C-MOS switch ar- 
ray 
Electronic circuit using 
custom LSI (Equivalent 
to 500 type standard 
network) - Calling signal for 
called station: 
. Keyset network: 
- Transmitter and 
Receiver 
: 
Dynamic type 
(Equivalent to 500 type 
standard telephone 
transmitter and 
receiver) 
3. Transmission 
- Cross talk attenuation: More than 75 dB for 
- Insertion loss, 
station to trunk: 300-3, SOOkHz 
Less than 1.8 dB at 
IkHZ 
140.9 Visual and...

.-,_ ,. 
c) Signal level 
- Minimum level per 
frequency: 
Low group: 
High group: 
d) Duration of two 
frequency signal: 
e) Interdigital time: 
3. Dialing Memories 
a) Last COjPBX Number 
Redial: 
b) Speed Dialing-Station: 
c) Speed Dialing-System: -1OdBm 
- 8dBm 
60 msec. min. 
00 msec. min. 
16 digits max. 
(including pause) 
16 numbers (16 digits, 
including any pauses) 
4q numbers (16 digits, 
including any pauses) 
140.11 
External Equipment Interfacing 
1. External Paging 
- Output power: 1 watt...

6. MFI-S KTU (Dual-Tone Multip Frequency Interface 
Key Telephone Unit) provides circuits to serve up to 3 
CO/PBX lines, and contains circuitry for CO/PBX ring 
detection, hold and control functions. It also sends 
DTMF dial signalling to CO/PBX lines in accordance 
with dialing from keysets. A MFI-S KTY and a DCI-S 
KTU can be mixed in a system. 
. 7. 
8. 
9. 
10. 
11 
KSI-S KTU (Keyset Interface Key Telephone Unit) 
provides data control to the Electronic Key Telephone 
set (ET-6-l). Each KSI-S KTU...

160 System Configuration 
160.1 To Determine Required Equipment 
1. Determine how many electronic key telephones are re- 
quired in the system. Refer to Table A if the number 
of keysets are 8 or less. Refer to Table B if the number 
of keysets are more than 8. 
2. Determine how many CO/PBX lines are required. The 
result will tell you which line of the selected table to 
use. See Table 160-l. 
Table 160-l Required Quantities of KThls 
TABLE A: Total Number of Keysets is 1 - 8 TABLE B: Tota! Number of...

/--- CQlP0X  
123 456 
---_------__ 
-I 
I 
I 
I 
1 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
1 I 
2 
SWM 2 
i I I I 
DOOR PHONE 1 
DOOR PHONE 2 
---I-l PS-6-! 
EXT. SPEAKER 
SECURITY I 
I 
CONTROL 
EQUIPMENT 
Page 100-8 
[ 13 installed in ES&l KSU 
Fig. 160-l System Block Diagram