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www.cooperbussmann.com/wirelessresources
Cooper Bussmann 915U-2 Wireless Mesh I/O and Gateway User Manual
Rev Version 1.2.2
C
hapTEr
6 - SpECIFICaTIONS
Specifications for the 915U-2 are provided in the following table.
Specifications
Radio Transceiver
Frequency
902–928 MHz
(1)
; 869.525 MHz; 869.875 MHz
(1)
Transmit power
1 mW (+0 dBm) to 1W (+30 dBm)
(2)
1 mW (+0 dBm) to 500 mW (+27 dBm)
(3)
Transmission
Frequency Hopping Spread Spectrum (FHSS)
(2
)
Single Fixed Frequency
(3)
Modulation
Frequency Shift Keying (FSK)
Receive Sensitivity
–109 dBm @ 19.2 kbps (3% FER)
(2)
–109 dBm @ 14.4 kbps (3% FER)
(3)
Channel Spacing
50 x 250 kHz
(2, 4)
; Single 250 kHz
(2, 4)
Radio data rate
19.2–115.2 kbps
(1, 2)
; 14.4–76.8 kbps
(1, 3)
Range (LOS) Typically
32 km (20 mi) @ 1W
(2,5)
; 10 km (6 mi) @ 500 mW
(3,5)
Antenna Connector
1 x Female SMA Standard Polarity
Input/Output
Discrete Input
8 Digital I/O (1–4 Configurable as Pulsed Input or Output)
On-State Voltage: < 2.1 Vdc
Wetting Current: 3.3 mA
Max I/P Pulse Rate: DI 1/2: 50 kHz; DI 3/4: 1 kHz
Max I/P Pulse Width: DI 1/2: 10 μsec; PI 3/4: 0.2 msec
Discrete Output
8 Digital I/O (1–4 Configurable as Pulsed Input or Output)
On-State Voltage: DO Max, < 0.5V
Maximum Current: 200 mA
Max O/P Pulse Rate: PO Max Rate, 1 kHz
Analog Inputs
4 AI (2 Differential, 2 Single Ended)
Current Range: 0–24 mA
Current Resolution: 14 bits
Accuracy (Current): 0.1%
Voltage Input Range: AI 1/2: 0–20V, AI 3/4: 0–5V
Voltage Resolution: 14 bits
Accuracy (Voltage): 0.1% full scale
Analog Output
2 AO (Sourcing)
Current Range: 0–24 mA
Current Resolution: 13 bits
Accuracy (Current): 0.1% (20 μA)
Ethernet Ports
Ethernet Port
10/100baseT; RJ45 Connector, IEEE 802.3
Link Activity
Link, 100BaseT via LED
Serial Ports
RS-232 Port
EIA-562 (RJ45 Connector)
RS-485 Port
2-Pin Terminal Block, Non-isolated
(6)
Data Rate (Bps)
1200, 2400, 4800, 9600, 14400, 19200, 38400, 57600, 76800, 115200, 230400 bps
Serial Settings
7 / 8 Data Bits; Stop/Start/Parity (Configurable)