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Operating Manual
Specifications
PN 8500-0150, Rev. A, May 2005 26
4 — Specifications
This section contains the electrical, physical, and environmental specifications for the 5401
and 5402 Disciplined Rubidium Oscillator.
Input Specifications and Characteristics
Table 4 Input Specifications and Characteristics
5401 DC Power Input (J15) Type
MS27499E10B5P
Connector Pin Assignments:
Pin Function
A Rubidium Lock Status
B Chassis Ground
C Not Used
D +28 VDC (+18 to +36 VDC) (Approximately 2.5 amps at
initial turn-on and 1.4 amps after stabilization.)
E Power Return
5401 Fuse
10 amp fast blow, 3 AG
5402 AC Power Input (J1) Type
IEC connector
Using the standard power supply:
Input Voltage 5401: DC = +18 V to 36 VDC, MIL-STD-704
< 80 W (warmup)
< 40 W (steady-state)
5402: AC = 90 to 240 VAC (47-440 Hz)
< 80 W (warmup)
< 40 W (steady-state)
5402 Fuse
3 amp fast blow, Microfuse
DRO 1 PPS Input Type
5401: Isolated SMA (J13)
5402: Isolated BNC (J2)
The 1 PPS input accepts a signal with the following characteristics:
Level
TTL or +10 VDC ±1 VDC, selectable via RS-232
Rise Time
< 20 nanoseconds (10% to 90%)
Fall Time
< 1 microsecond (90% to 10%)
Pulse Width
20 nanoseconds to 100 microseconds
Input Impedance
50