Spectracom NetClock 9489 - IRIG Output Specifications; NENA-Compliant Module: Specifications

5.2.4.1 NENA-Compliant Module: Specifications
Outputs:
(1) IRIG B/E, IEEE
1344/C37.118-2005
(AM/TTL)
(1) ASCII RS-232 (1) ASCII RS-485 (2)
Relay/Alarm
Connectors:
BNC (J1) DB9F (J2) 3.81mm Terminal block (J3)
Accuracy:
±20 to ±200μs of UTC, format-
dependent
±100-1000μs
(format-dependent)
±100-1000μs
(format-dependent)
Switch time
4ms, max.
Table 5-7:
NENA module specifications
Figure 5-3: Rear plate of NetClock 9483 NENA-compliant module
5.2.4.2 IRIG Output Specifications
AM IRIG Output:
Output impedance: 50 Ω nominal
Amplitude (adjustable):
500 mV
p-p
min, 6V
p-p
max into 50 Ω
1V
p-p
min, 12V
p-p
max into > 600 Ω
AM Carrier:
IRIG A – 10 kHz
IRIG B – 1kHz
IRIG E – 100 Hz, 1kHz
IRIG G – 100 kHz
Modulation Ratio: 3.3:1 nominal
NetClock User Reference Guide 349
APPENDIX