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STRATA DK
GENERAL DESCRIPTION
DECEMBER 1990
TABLE B
GENERAL REQUIREMENTS
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Primary power
Input AC
AC frequency
DK24 power supply
DK56 power supply
DK96 power supply
Environmental specifications
Operating temperature
Operating humidity
Storage temperature
Power supply
DC voltage output
specification
a5 w 135VAC
50/60 Hz
65 watts
140 watts
230 watts
32 ..a 104°F (0 - 40°C)
20 - 60% relative humidity without condensation
- 4 M 158°F (-20 M 70°C)
-24VDC: (-26.3 w -27.8VDC)
+5VDC: (+4.5 w +5.5VDC)
- 5VDC: (- 4.5 m - 5.5VDC)
Battery charger characteristics
PSTU or PESU (circuits 1 & 2)
Ring voltage
Charger: current limiting
Nominal float voltage: 2.275 volts/cell
Charge current: 0.7 amps maximum
Battery discharge cut-off voltage: 20.5 +_ 0.5VDC
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)
Ringing capability
PEW or PSTU modem interface data rate
BTU rating
DK24
Two ringers maximum per circuit, high or low
position
9600 bps maximum
PART QTY
PEKU 3 103 BTUs (30 watt hours)
PCOU 2
PCTUS 1
PIOUS 1
EKTs 24
DK56
PEKU 5
PCOU 3
PCTU 1
EKTs 40
205 BTUs (60 watt hours)
DK96
PEKU 9
PCOU 5
PCTU 1
EKTs 72
346 BTUs (102 watt hours)
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