B. Specifications
51
Requirements
Current, environmental, and mechanical specifications are presented in the table below.
Current, Environmental, and Mechanical Requirements
PRODUCT
ZT 8952-0
CURRENT RE-
QUIREMENTS AT
ENVIRONMENTAL REQUIREMENTS
MECHANICAL
SPECIFICATIONS
+5V TYP. (mA) (R/W)
+5V MAX (mA) (Spinup)
+12V TYP (mA) (R/W)
+12V MAX (mA) (Spinup)
STORAGE TEMPERATURE
OPERATING TEMPERATURE
% HUMIDITY (NONCON- OPERATING ALTITUDE (FEET)
STORAGE ALTITUDE (FEET)
MTBF (K HOURS)
CARDCAGE SLOTS REQUIRED
BOARD WEIGHT (LBS)
VIBRATION (G)
SHOCK
BOARD HEIGHT (INCHES)
320 470
-
-
-
1
0.2
.35
-
0 to +65
-40 to +85
5 to 95
-
( C)
( C)
DENSING AT 40
C)
ZT 8953-80
1.5
ZT 8953-170
1.5
ZT 8953-50
630 780 410 1000
-40 to +65
+4 to +50
8 to 85
+10,000
+40,000
60
1.3
1.4
ZT 8953-120
600 850 200 1100
-40 to +60
8 to 80
+5 to +55
+10,000
+40,000
150
1.5
1.4
3
3
3
3
MAXIMUM
MAXIMUM
Non Op. Op.
Non Op.
Op.
(G)
2
-
-
-
-
1
60
6
1.4
1.4
5
4
5
0.5
0.5
0.5
100
75
100
10
5
10
710
730 140 1100
710
730 140 1100
-40 to +60
-40 to +60
+5 to +55
+5 to +55
8 to 80
8 to 80
+10,000
+10,000
+40,000
+40,000
150
150
AVG. SEEK
(ms)
-
19
17
19
17
Obsolete. Data provided for reference.
ZT 8952-40
1580
-
-
+10,000
+40,000
880
-40 to +60
+5 to +55
8 to 80
100
0.7
.75
2
5
0.5 100
10
15
†
†
†
ZT 8952-85
710 1250
-
-
-40 to +60 +5 to +55
8 to 80
0.4
0.5
1
100
+10,000
+40,000
15
5
0.5 125
20
2 1/2" DRIVES
3 1/2" DRIVES
ZT 8952-80
2
0.7
880 1580
-
-
-40 to +60
+5 to +55
8 to 80
.75
100
+10,000
+40,000
16
5
0.5 100
10
†
ZT 8952-120
770 1580
-
-
-40 to +60 +5 to +55
8 to 80
0.7
.75
2
150
+10,000
+40,000
16
5
0.5 100
10
STD Bus Loading Characteristics
Unit load is a convenient method of specifying input and output drive capability for STD
bus cards. In STD bus systems one unit load is equal to one LSTTL load as follows:
•
Maximum high level input current: 20 mA
•
Maximum low level input current: -400 mA
The STD bus unit load reflects input current requirements at worst case conditions over
recommended supply voltage and ambient temperature ranges. An output rate of 60
unit loads can drive 60 STD bus cards that have an input rate of one unit load.
The "
STD Bus Signal Loading, P Connector
" table below shows STD-80 signals for P
Connectors. The "
STD Bus Signal Loading, E Connector
" table shows signals used in
STD 32 systems. These signals are referred to as E signals.
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