Symmetricom 5402, 5401 manual Coherence a

Operating Manual

Specifications

Table 5 Output Specifications and Characteristics (Continued)

Coherencea	The 1 PPS OUT time delay is < 10 nanoseconds from the
	mean of the 1 PPS Input
Port to Port Isolation	90 dB
Isolation (with respect to 1 PPS	90 dB
input)
DRO 10 MHz Output Type	5401: Isolated SMA (J7-J12)
	5402: Isolated SMA (J10-J15)

The DRO outputs 10 MHz signals with the following characteristics (After a 30 minute warm-up at an ambient temperature of 25ºC):

Level	1.6 to 3.0 volts peak-to-peak (adjustable)
Output Impedance	50Ω
Short Term Accuracy	3.0 x 10-11 RMS @ 1 second
Long Term Accuracy	5 x 10-12 RMS @ 1000 seconds (while disciplining)
Stability	2.5 x 10-12 Alan Deviation @ 100 seconds
Quiescent Phase Noise	Symmetricom 5401	Symmetricom 5402
1 Hz	< –94 dBc/Hz	< –85 dBc/Hz
10 Hz	< –110 dBc/Hz	< –100 dBc/Hz
100 Hz	< –140 dBc/Hz	< –130 dBc/Hz
1000 Hz	< –147 dBc/Hz	< –140 dBc/Hz
10 kHz	< –152 dBc/Hz	< –145 dBc/Hz
Spurs	Symmetricom 5401	Symmetricom 5402
Harmonic	40 dBc	40 dBc
Non-Harmonic	50 dBc	50 dBc
Port to Port Isolation	> 99 dB	> 99 dB
Coherence	2 nanoseconds (zero crossing of the 10 MHz sine wave with
	respect to the rising edge of the 1 PPS output.)

aThe setup parameters have an effect on the coherence. Refer to the RS232 I/O de- scription in Chapter 3. Port to Port Isolation 90 dB Isolation (with respect to 1 PPS in- put) 90 dB.

PN 8500-0150, Rev. A, May 2005 28