Spectracom TSync-PCIe, Руководство пользователя

Страница: 21 / 61

Amplitude:
0.5 V
p-p
to 6 V
p-p
into 50 ohms, user settable
1 V
p-p
to 12 V
p-p
into > 600 ohms
Output impedance: 50 ohm nominal
Output load: 50 ohm minimum
Modulation ratio: 3:1 nominal
Accuracy: ±2 to 200 microseconds (IRIG-format dependent)
3.6 IRIG DCLS Output
IRIG DCLS output at timing interface connector
Outputs formats A, B, E, G; NASA36; IEEE 1344 pulse width codes (does not generate
Manchester modulated codes)
RS-485 differential signal:
1.8 V
max
common mode output voltage (RS-485 compatible)
1.5 V
min
to 3.3 V max differential output voltage swing
Single-ended amplitude (100 Ohm load):
0.5 V V
OL
max, +2.5 V V
OH
min (TTL compatible)
3.7 10-MHz Output
10-MHz sine wave output from oscillator
Output impedance: 50 ohm nominal
Output load: 50 ohm minimum
Output harmonics: < -40 dBc
Output spurious: < –70 dBc
TCXO OCXO
Accuracy
(average over 24 hours when GNSS
locked)
1x10
-11
5x10
-12
Medium term stability
(without CPS after 2 weeks of GNSS
lock)
1x10
-8
/ day 2x10
-9
/ day
Phase noise (dBc/Hz)
3.6 IRIG DCLS Output
CHAPTER
3
•
Instruction Manual XYZ Rev. R
11