
I
..
‘*a
3.Fuse Replacement
Replace fuses in accordance with Table 140- 1.
Table
Note 1: FI is 1/4”x
Note2:
mm)size normal blown glass tube fuse. Buss GMA I25 V., O.SA fuse.
Do not install any ‘slow blow” fuses in the
KSU.
140.3Power Requirements
1.AC Input
-117V AC f 1O%, SO or 60Hz + 1O%, single phase
. Max. current draw: 4.OA
*Dedicated outlet separately fused at 15A max.
2.Power Supply Outputs
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 |
140.4Surge 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 |
140.6CO/PBX Line Type
CO/PBX Line Type: 2 wire, loop start
140.7Dimensions and Weight
490(W) | x 195S(D)x 421(H)mm, | |||
W/PSU |
| 40 Lbs (I 8kg) |
| |
TEL | 210(W) | x 222(D) | x 82(H)mm, | |
|
| 2.9 Lbs (1300g) |
| |
BLF | 75(W) | x 222(D) | x 82(H)mm, | |
|
| 1.3 Lbs | (600g) |
|
| 100(W) | x 132(D) | x 31.5(H)mm, | |
Door Phone | 0.4 Lbs (200g) |
|
140.8Network and Control
1.Control
. | Control: |
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| Stored program |
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. | Central | processor: |
| 8085A |
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. | Microprocessor | in keyset: | pCOM43N | (4 bit | one- | |||||||
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| chip microcomputer) | |||
. Clock |
| 33kHz |
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. | Transmission |
| data: |
| 9 bits |
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| (from | KSU | to | keyset) |
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. | Scanning | time | for each | Every | SO msec. |
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| keyset: |
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. | Number | of | cable | pairs | from 2 pair | wire | for keyset | |||||
| KSU to | each | station: |
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. | For | keyset, | one | pair: |
| Voice | and | signalling | ||||
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| one | pair: |
| Data | sending and | re- | ||
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| ceiving |
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. | For | Door | Phone, | one | pair: | Voice | and | signalling | ||||
. | For | BLF, | one | pair: |
| Data | receiving |
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