TW163 1-to-2 Port Smart Power GNSS Signal Splitter  (10 dB gain)

The Tallysman TW163 is a professional-grade full GNSS band signal splitter that connects one antenna to two receivers, and supports GPS/QZSS-L1/L2/L5, QZSS-L6, GLONASS-G1/G2/G3, BeiDou-B1/B2/B2a/B3, E1/E5a/E5b/E6, NavIC-L5, and L-Band correction services. GalileoGNSS has become a critical component in safety, security, timing, and infrastructure applications, all of which require very high availability. As a result, resilient fault-tolerant components are essential to avoid service interruptions. The design of first-generation GNSS signal splitters suffered from a single point of failure: only one attached receiver powered the splitter and the antenna. If this receiver failed or was unplugged, all attached receivers also failed. Calian's current-generation TW163 Smart Power GNSS signal splitter provides two additional key features: First, it accepts power from all attached GNSS receivers and selects power from a receiver using the following protocol. Port #1 is given priority if its voltage is within the specified range (3.0 V- 12.5 VDC). However, if port #1’s receiver is disconnected or if its receiver power goes below the under-voltage or above the over-voltage specification, the TW163 will switch to the next port in numerical order, as long as its power and voltage are within the expected range. The switching and port selection is, therefore, deterministic. Second, if the antenna fails and does not draw current, the TW163 will provide all connectors with a current draw lower than 1 mA, indicating an antenna fault. The TW163 offers the best in-class performance in terms of noise figure, isolation, and linearity. In addition, it is packaged in a robust, compact, lightweight, and water-proof (IP67) corrosion-protected aluminum housing. The TW163 is available with either TNC or type-N connectors and offers 10 dB gain over the splitting-loss. It is recommended that unused ports should be terminated with a 50 Ohm load.
 
Applications:

• GNSS signal distribution
• GNSS receiver testing
• High-availability applications
• Network and infrastructure timing

Electrical Specifications:

Parameter	Conditions / Description	Minimum	Typical	Maximum	Units
Frequency Range	Bandwidth supported	1100	-	1700	MHz
Gain	Measured within range: -40 °C to 85 °C	9	10	11	dB
Impedance	-	-	50	-	Ω
Noise Figure	All Receiver Ports	-	1.7	2	dB
Output Isolation	-	27	-	-	dB
Input/Output SWR	-	-	1.3:1 | 1.1:1	1.5:1 | 1.2:1	ratio
Gain Compression Point (P1dB)	Gain of 0 dB	-20	-17	-14	dBm
3rd Order Intercept (IIP3)	Gain of 0 dB	-10	-7	-4	dBm
RF Input (Damage Threshold)	Maximum RF Input without damage	-	-	5	dBm
Amplitude Balance	Between Ports	-	0.1	0.5	dB
Phase Balance	Between Ports	-	2	5	degrees (°)
DC Input Range	DC input on any receiver port	3.3	-	12.5	VDC
Receiver Over-Voltage	-	12.7	14.9	16.9	VDC
Receiver Under-Voltage	-	2.3	2.5	2.8	VDC
Splitter Current	Current consumed by splitter	-	15	25	mA
Antenna Through Current	Maximum current provided to the antenna	-	-	230	mA
Group Delay Variation	Antenna to Ports	1	1.4	2	ns
	Adjacent Ports	0	0.3	0.5	ns
	Opposite Ports	0	0.5	1	ns