Orolia Spectracom VelaSync 1232, Руководство пользователя

Страница: 20 / 268

TCXO OCXO
OCXO (Rugged
Option, cPCI & VPX
only)
Holdover (constant temp after 2 weeks of GNSS lock)
After 4 hours 12
μ
s 3
μ
s 1
μ
s
After 24 hours 450
μ
s
100
μ
s 25
μ
s
10 MHz Output
10 MHz sine wave output from oscillator
Output impedance: 50 Ω nominal
Output load: 50 Ω minimum
Output harmonics: < -40 dBc
Output spurious: < -70 dBc
IRIG AM Output
Output formats A, B, E (100 Hz, 1 kHz), G; NASA36; IEEE 1344
Amplitude:
0.5 V
p-p
to 6 V
p-p
into 50 Ω, user settable
1V
p-p
to 12 V
p-p
into > 600 Ω
Output impedance: 50 Ω nominal
Output load: 50 Ω minimum
Modulation ratio: 3:1 nominal
Accuracy: ±2 to 200 microseconds (IRIG-format dependent)
IRIG DCLS Output
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 Ω load):
0.5 V
VOL
max, +2.5 V
VOH
min (TTL compatible)
GPIO Outputs
Periodic Output:
8
CHAPTER
1
•
VelaSync 1232 User Manual Rev. 4
1.4 Technical Specifications