Symmetricom 5071A, Assembly And Service Manual

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3. Theory of Operation
Functional Block Descriptions
145
Table 3-6 . Power Supply Block Interconnections
Source
Module or
Assembly
From Path
Connectors
Signal Name
To Path
Connectors Destination
Module or
Assembly
LF1 LF1 Cable 100-240 Volts AC Power,
(voltage selected on LF1) T1 Cable-In T1 Xfmr
T1 Xfmr T1 Cable-Out ~28 Vrms,
(secondary output of T1)
(~ 37Vrms for Opt. 048 A1J5 A1
Ext. DC
Input A1J1 - A1J4 22-42 Volts DC Power (40-58
Vdc on Opt. 048),
(filtered on A1) A1J4 -
A11J101 A11
A1 A1J4 32-38 Volts DC (45-51 Vdc for
Opt. 048)
(rectified and filtered on A1) A1P4 -
A11P101 A11
A11 A11P101 - Steered DC Power, 22-42 V
(40-58 Vdc on Opt. 048) A1J4 A1
A1 A1J4 Steered DC Power, 22-42 V
(40-58 Vdc on Opt. 048)
(low-pass filtered on A1) A1J2 -
A12P2 A12
A12 A12P2 +12.3 VOut, +12.3 VReturn,
- 12.3 VOut, - 12.3 VReturn,
+5.45 VOut, +5.45 VReturn A1J2 A1
P/O B1 Red/Blk Plug + 12 Vdc Red/Blk Jack A11
P/O B1 Red/Blk Plug + 12 Vdc Red/Blk Jack A11
A11 A11J2 DC Valid, DC Valid Return,
AC Valid, AC Valid Return,
Vcc, Spare,
Pwr Fail, Pwr Fail Return
Batt Valid, Batt Valid Return A1J3 A1