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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
. Max. current draw: 4.OA
*
Dedicated outlet separately fused at 15A max.
2. Power Supply Outputs (PS-6 - 1)
DC Voltage
Max. current
+5v + 0.25v
4.OA
+12v 5 O.5V
1.2A
+24V it 1 .QV
2.OA
+41v * l.OV
1.4A
3. BLF Console Power Supply
Output Voltage:
9vDC
Max. Output Current:
0.3A
140.4 Surge Protection
If an installation is subject to AC power surges it is
recommended that the most effective locally available form
of surge protection be supplied. CO Lines are protected by
the local operating (telephone) company. It is recommend-
ed that the most effective locally available form of protec-
tion be installed on CO/PBX lines by the local operating
(telephone) company.
(~__-___-.~-___./
Note:
7his is NOTa recommendation that more than one
set of protectors be installed on CO lines at instaila-
tion premises. Improper installation of additional
protection can be a serious safety hazard.
140.5
Environmental Conditions
1. Temperature:
pperating:
+32” F- 104°F (O”C-
40°C)
Recommended long term: +50”F- 90°F
2. Humidity:
Operating 10 - 90 percent
140.6 CO/PBX
Line Type
CO/PBX Line Type: 2 wire, loop start
140.7 Dimensions and Weight
ES-6-I KSU
W/PSU
ET-6-I TEL
EB-6-1 BLF
DP-6-1
Door Phone
490(W) x 195S(D)x 421(H)mm,
40 Lbs (I 8kg)
210(W) x 222(D) x 82(H)mm,
2.9 Lbs (1300g)
75(W) x 222(D) x 82(H)mm,
1.3 Lbs (600g)
100(W) x 132(D) x 31.5(H)mm,
0.4 Lbs (200g)
140.8 Network and Control
1. Control
.
.
.
.
.
.
.
.
.
.
Control:
Central processor:
Microprocessor in keyset:
Clock (KSU-keyset):
Transmission data:
(from KSU to keyset)
Scanning time for each
keyset:
Stored program
8085A
pCOM43N (4 bit one-
chip microcomputer)
33kHz
9 bits
Every SO msec.
Number of cable pairs from 2 pair wire for keyset
KSU to each station:
For keyset, one pair:
Voice and signalling
one pair: Data sending and re-
ceiving
For Door Phone, one pair: Voice and signalling
For BLF, one pair:
Data receiving
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