Ac Power And Grounding Requirements - Toshiba DK14 Installation And Maintenance Manual

Table 1-1 Summary of Electrical/Environmental Characteristics
DK14 Primary Power
Input AC (Power Supply Specification)
AC frequency
Power
AC Current
Environmental Specifications
Operating temperature
Operating humidity
Storage temperature
Power Supply
DC voltage output specification
QSTU2 (Circuits 1 and 2)
Ring Voltage
Ringing capability
QSTU2 modem interface data rate

AC Power and Grounding Requirements

The DK14 requires a solid earth ground
for proper operation. The AC power cord
contains a conductor for the "third-wire
ground" provided by the commercial
power outlet.
The third-wire ground should be the only
ground necessary for the DK14; this
ground must originate at the buildings
main power distribution panel and have a
solid connection to earth ground. (See
Figure 1-2.)
AC Voltage Range:
o 115VAC ± 10VAC
0.7 amp. max
o
Lack of proper ground may cause improper operation and, in extreme cases,
CAUTION!
system failure.
Strata DK I&M 5/00
85~135VAC
50/60 Hz
75 watts maximum
<0.7 amps maximum
32~104° F (0 ~40° C)
20~80% relative humidity without condensation
-4~158° F (-20~70° C)
+24VDC (+26.3~+27.8VDC)
+5VDC (+4.5~+5.5VDC)
+5VDC converter on KSU PCB
Square wave output with high/low option jumper:
±
Low position 130 20VDC peak-to-peak (no-load)
±
High position, 190 25VDC peak-to-peak (no-load)
2 ringers maximum per circuit, high or low position
14,400 bps maximum
Third Wire
AC Ground
Electrical Building
Ground (Main Power
Distribution Box)
Figure 1-2 DK14 Grounding Diagram
DK14 Installation
AC Power and Grounding Requirements
Third Wire Ground
Ground 1
To AC Power Cord
DK14 KSU
Power
Supply
4' 5"
A
AC Voltage
115VAC
± 10VAC
FG
AC Current
0.7 amps max.
Alternate Ground
Grounding Rod
2159
1-3