CSS-905A can be factory set or user configured over a range of operating parameters, including radio frequency (RF) output power, frequency selection, input data rates, and Advanced Range Telemetry (ARTM) Tier 0, I and II modulation. Its flight history reduces selection and system design risks and provides opportunities for qualification-by-similarity (QBS) analysis. CSS-905A is a proven, high-reliability telemetry transmitter that has supported a full range of qualification testing by the most demanding programs.
CSS-905A SPECIFICATIONS
| Multimode ARTM Tier 0, I and II modulation (PCM/FM, SOQPSK-TG and Multi-h CPM) | 
| Input data rates configurable from 500 kbps to 27 Mbps | 
| 
			 Frequency selection from 2200 MHz to 2400 MHz in 0.5 MHz steps  | 
		
| RF output configuration settings of 2, 5, 7 and 10 W | 
| RF enable/disable control pin | 
| IRIG-106-Appendix-N-compliant RS-232 serial control and status interface | 
| +21 VDC to +36 VDC power input range and reverse power protection to -40 VDC | 
| -40 C to +85 C qualified operating temperature range | 
| 100 Gs shock and acceleration, 28 Grms vibration | 
| IRIG and MIL-STD-461 EMI compliant, with RF output filtering to protect co-located GPS and FTR subsystems | 
| High-efficiency power design and power amplifier | 
| User configurable or factory set | 
| RF output protection from VSWR loads, including open and short conditions | 
| Mission heritage | 
| 
			 Frequency range  | 
			
			 2200 to 2400 MHz, 0.5 MHz steps  | 
		
| 
			 Output power  | 
			
			 2 W, 5 W, 7 W or 10 W (optional switchable power levels)  | 
		
| 
			 Modulation  | 
			
			 ARTM 0, I and II (PCM/FM, SOQPSK, Multi-h CPM)  | 
		
| 
			 Carrier stability  | 
			
			 +/- 0.002%  | 
		
| 
			 Output load VSWR  | 
			
			 50 ohms (nominal), no damage open or short  | 
		
| 
			 Coupling  | 
			
			 DC  | 
		
| 
			 RS-422 input  | 
			
			 100 ohms differential impedance  | 
		
| 
			 Input VDC range  | 
			
			 +28 (typ), +21 to +36  | 
		
| 
			 
 Current (typ.)  | 
			
			 < 750 mA at 28 V, 5W RF (across temp.); 1.3A at 28V, 10W RF (ambient)  | 
		
| 
			 Reverse polarity protection  | 
			
			 No damage -40 VDC applied, indefinite period  | 
		
| 
			 Grounding  | 
			
			 Power and RF output, common to chassis  | 
		
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			 Operating temperature  | 
			
			 -40 C to +85 C maximum  | 
		
| 
			 Storage temperature  | 
			
			 -54 C to +95 C  | 
		
| 
			 Random vibration  | 
			
			 28 G rms maximum  | 
		
| 
			 Shock  | 
			
			 100 G peak ½ sine, 0.5 mSec maximum  | 
		
| 
			 Acceleration  | 
			
			 100 G maximum  | 
		
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			 Humidity  | 
			
			 MIL-STD-810 Method 507  | 
		
| 
			 Electromagnetic Interference (EMI)  | 
			
			 IRIG and MIL-STD-461  | 
		
| 
			 Size  | 
			
			 3.0” L x 2.0” W x 0.8” H (7.62 cm L x 5.08 cm W x 2.0 cm H)  | 
		
| 
			 Volume  | 
			
			 4.8 cubic inch (12.19 cubic cm)  | 
		
| 
			 Weight  | 
			
			 5.8 ounces (164.4 g)  |