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Table 5 Output Specifications and Characteristics (Continued)
a
Coherence
Port to Port Isolation
Isolation (with respect to 1 PPS
input)
DRO 10 MHz Output Type
The DRO outputs 10 MHz signals with the following characteristics (After a 30 minute
warm-up at an ambient temperature of 25ºC):
Level
Output Impedance
Short Term Accuracy
Long Term Accuracy
Stability
Quiescent Phase Noise
1 Hz
10 Hz
100 Hz
1000 Hz
10 kHz
Spurs
Harmonic
Non-Harmonic
Port to Port Isolation
Coherence
a
The setup parameters have an effect on the coherence. Refer to the RS232 I/O de-
scription in
Chapter
put) 90 dB.
PN 8500-0150, Rev. A, May 2005
The 1 PPS OUT time delay is < 10 nanoseconds from the
mean of the 1 PPS Input
90 dB
90 dB
5401: Isolated SMA (J7-J12)
5402: Isolated SMA (J10-J15)
1.6 to 3.0 volts peak-to-peak (adjustable)
50Ω
3.0 x 10-11 RMS @ 1 second
5 x 10-12 RMS @ 1000 seconds (while disciplining)
2.5 x 10-12 Alan Deviation @ 100 seconds
Symmetricom 5401
< –94 dBc/Hz
< –110 dBc/Hz
< –140 dBc/Hz
< –147 dBc/Hz
< –152 dBc/Hz
Symmetricom 5401
40 dBc
50 dBc
> 99 dB
2 nanoseconds (zero crossing of the 10 MHz sine wave with
respect to the rising edge of the 1 PPS output.)
3. Port to Port Isolation 90 dB Isolation (with respect to 1 PPS in-
Operating Manual
Specifications
Symmetricom 5402
< –85 dBc/Hz
< –100 dBc/Hz
< –130 dBc/Hz
< –140 dBc/Hz
< –145 dBc/Hz
Symmetricom 5402
40 dBc
50 dBc
> 99 dB
28
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