3142 12:2 70MHz IF Protection Switch
Multiple Input Protection Switch
Two outputs protected by fourteen inputs (all connections 75 ohm); protection via remote control; 50-90 MHZ bandwidth, no connectors in internal signal paths; 2 RU high; one 20 to 56 VDC and two 100 to 130 VAC power supplies; ultra linear; ultra reliable; often used for satellite up link protection
| Model 3142 Characteristics | |
| Channel Interfaces | |
| Input Channels 1 through 12 Input Protect Channels 1 and 2 Output Protect Channels 1 and 2 75 Insertion Gain Variation: Operating Frequency Range: Amplitude vs Frequency Response: Input to Input Crosstalk: Switching Time: Random and Spurious Noise: Group Delay: |
Inputs and Outputs: 75Ω unbalanced Inputs and Outputs: > 26 dB return loss Input Power Level: -15 to +10 dBm Output Level: Unity gain relative to input < ±0.1 dB (70 MHz) 70 MHz ± 20 MHz +0.0 to – 0.3 dB, 50 MHz to 90 MHz, 70 MHz reference <-70 dBm on output, 0 dBm into other input < 20 nsec <80 dBm, all inputs terminated < 1.5 nsec, over 70 MHz ± 20 MHz |
| Channel Switching | |
| Any unselected input to either single output based upon external closure or serial signal Two Remote Closure Inputs: 15 pin female D-Sub (DB15F) shielded Activation on closure to ground (Active Low) or on closure open from ground (Active High) Active Low or Active High switching mode user selectable Switching command delay user selectable (High Speed: < 10 µsec, Low Speed: > 50 msec) One Serial I/O Input: 9 pin female D-Sub (DB9F) shielded, RS-422 Consult factory for current protocols |
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| Alarm and Status Outputs | |
| 9 pin female D-Sub (DB9F) shielded Individual closures indicative of Unit Fail, Channel to Protect 1 and Channel to Protect 2 All closures are normally open closures between isolated pins |
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| LED Indicators | |
| Unit power OK, AC and DC Power Failure Indication of Channel Switched to Output Channel |
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| Power | |
| AC Power Consumption AC Input Power Range AC Power Connection DC Power Consumption DC Input Power Range DC Power Connection |
30 Watts 100 to 130 VAC, polarized 3 prong IEC 320, grounded, RFI filtered 10 Watts 20 to 56 VDC, floating Barrier Strip, two #6 screws |
| Environmental | |
| Operating Temperature Humidity Range Storage Temperature |
0 to +50° C 5% to 95%, Non-condensing -40 to +70° C |
| Physical Characteristics | |
| Shelf Size Rack Mounting Shelf Weight |
3.50” H (2 RU), 19” W, 14” D Flush with rack 12 pounds |
| Documentation | |