XHTF321N Time Code Terminal

The XHTF321N time code terminal has an active/standby switch function and two main control modules. It can automatically switch seamlessly when there is a problem with the module, improving the overall stability and reliability of the device.

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The XHTF321N time code terminal can receive the Beidou/GPS satellite signal and the IRIG-B time code, and use the demodulated reference signal to accurately synchronize the time-frequency signal generated by the local frequency source, and finally output the IRIG-B time code, the local second pulse, and other time-frequency signals (you can replace the output board to customize different output signals), and provide NTP network timing service.

The XHTF321N time code terminal has a network management interface to facilitate monitoring and control of the working state of the device.

Features

● Stable and reliable receiving and demodulating functions;

● Can receive multiple timing signals;

● The main signal input and output adopts electrical isolation circuit to resist interference and damage;

● Flexible configuration of input and output signals according to user needs;

● Network management;

● With active and standby switching;

● Can receive external 10MHz frequency standard signal.

Specifications

Input Signal				Output Signal
GPS Satellite Signal				1PPS pulse
RF Signal	GPS L1 band			Polarity	positive polarity
Capture Time	Hot start <10s, cold start <60s			Level	TTL standard (optional: RS422/RS485)
GPS Timing Accuracy	Better than 50ns			Synchronization Accuracy	<0.1μs
				Physical Interface	SMA/BNC
Physical Interface	SMA/BNC			IRIG-B(DC)
BD Satellite Signal				Level	TTLRS422/RS485 (optional: HCMOS)
RF Signal	Beidou B1 band			Synchronization Accuracy	<0.2μs
Capture Time	hot start <10s, cold start <60s			IRIG-B (AC)
BD Timing Accuracy	better than 50ns			Amplitude	0.5~10Vp-p
Number of ways	1 way			Modulation Ratio	2:1~6:1 adjustable
Physical Interface	SMA/BNC			Load	600Ω balanced input
IRIG-B (DC)				Physical Interface	SMA/BNC
Demodulation Accuracyl	＜0.2μs			NTP Network Timing
IRIG-B (AC)				Timing Accuracy	better than 1ms
Demodulation Accuracyl	＜10μs			Network management interface	support SNMPv2 or custom communication protocol
Physical Interface	SMA/BNC
10MHz Signal
Physical Interface	SMA/BNC
Internal Frequency Source Configuration
High stable OCXO
Frequency Accuracy		better than 5 × 10-12 / day
Short-Term Stability		better than 3×10-11/s
Daily Aging Rate		better than 5×10-10/day
Dimension
Width × Height × Depth (mm)		443 × 176 × 400
19-inch 4U racking chassis
Electrical Characteristics
AC 220 × (1 ± 10%) V
Environmental Characteristics
Working Temperature			-10 ° C ~ +50 ° C
Storage Temperature			-40 ° C ~ +65 ° C
Main Functions
(1) Has Beidou, GPS, B code receiving function
(2) Has time display (year, month, day, day, hour, minute, second) function
(3) Has clock-setting, automatic over tolerance synchronization, lead/lag function
(4) B code delay correction range 0.1μs～±999999.9μs, step 0.1μs
(5) Output multiple time code signals
(6) Has fault prompt function and can monitor equipment status through network
(7) Has active/standby switching function, which can switch modules manually or automatically.

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