Volume 1
MIL-HDBK-162-A
Section 3
15 December 1965
SB-440/SP, SB-441/SP, SB-442/SP
Peak Pulse Amplitude of Video Input and Out-
put Signals: 0.2 to 3v
FUNCTIONAL DESCRIPTION
Polarity of Input and Output Signals: Posi tive
Peak Pulse Amplitude of Trigger Regenerator
Radar Signal Distribution Switchboards SB-440/ SP,
Input Signal: 5v (min)
SB-441/SP, and SB-442/SP distribute video and trigger
Peak Pulse Amplitude of Trigger Regenerator
data to indicating equipments.
Each switchboard
Output Signal: 20 5v
accepts information from as many as seven radar and
Pulse Duration of Trigger Regenerator Output
Signal: 3.5 to 4 sec at 85% nom peak
four IFF sets. The differences between the SB-440/SP,
Rise Time of Trigger Regenerator Output Signal:
SB-441/SP, and SB-442/SP are in the number of master-
0.2 sec or less
control switches and the corresponding number of
Operating Voltages and Power Requirements:
indicating equipments that can be handled. The number
SB-440/SP - 115 vac, 60 cps, 1-ph, 200w
of master control switches equals the number of
SB-441/SP - 115 vac, 60 cps, 1-ph, 280w
indicator equipments a switchboard can handle. The
SB-442/SP - 115 vac, 60 cps, 1-ph, 400w
SB-440/SP handles five indicating equipments; the SB-
441/SP handles seven indicating equipments; the SB-
442/SP handles ten indicating equipments. All master
INSTALLATION CONSIDERATIONS
control switches are identical.
Switchboard inputs
Siting: Allow space on sides of switchboard to connect
connect to rotary switch assemblies.
The switch
and disconnect input and output cabling; allow 21
assemblies allow a single input to connect to any or all of
inches in front of equipment for front panel assembly
the available indicating equipments.
to be opened.
Mounting: Fasten securely to deck through six mounting
RELATION TO SIMILAR EQUIPMENT
holes; fasten at top of case according to instructions
in NAVSHIPS 92903(A).
None.
Cabling Requirements: Input and output cabling shall not
exceed 300 feet.
TECHNICAL DESCRIPTION
Related Equipment: Standard Navy IFF and radar
equipments.
Input and Output Impedance: 75 ohms
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENT
QTY
HEIGHT
WIDTH
DEPTH
UNIT WT.
(Inches)
(Inches)
(Inches)
(Pounds)
Radar Signal Distribution Switchboard
1
39-7/8
21-1/2
15-5/8
176
SB-440/SP (Includes 5 Remote
Master Control Switches)
Radar Signal Distribution Switchboard
1
51-7/8
21-1/2
15-5/8
245
SB-441/SP (Includes 7 Remote
Master Control Switches)
Radar Signal Distribution Switchboard
1
69-7/8
21-1/2
15-5/8
356
SB-442/SP (Includes 10 Remote
Master Control Switches)
REFERENCE DATA AND LITERATURE
Technical Manual:
NAVSHIPS 92903(A)
SB-440/SP: 2
Previous Page
