Comtech EF Data DMD1050TS - Simple Key Loader (J17); Antenna Handover (J18); Table 4-6. DS-101 Simple Key Loader (J17); Table 4-7. Antenna Handover (J18)

DMD1050TS Satellite Modem Board
Revision 1
Rear Panel Interface 4–9 MN-DMD1050TS
4.5.9 DS-101 Simple Key Loader (J17)
The DMD1050TS Simple Key Loader (SKL) Interface J17 can be used to connect an SKL
AN/PYQ-10 Electronic Key Management System (EKMS) key management device.
The physical interface is a 3-Pin Male Header Mfg (FCI) P/N: 68771-203HLF.
Table 4-6. DS-101 Simple Key Loader (J17)
Pin No.
Signal Name
Signal
Direction
1 Data I/O (+)
(Balanced Differential input or output
analog interface)
KEYLOAD_A Input / Output
Input:
(Per EIA-485 Specification)
Sensitivity: VThH =-1.6V,
VThL =+1.6V,
Min. Input Resistance
1.73K
Output:
(Per EIA-485 Specification)
VOUT = +(1.5V to 5.0V)
with 54 ohm load
2
Ground
---
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3 Data I/O (-)
(Balanced Differential input or output
analog interface)
KEYLOAD_B Same as Pin 1
4.5.10 Antenna Handover (J18)
Future Option
The physical interface is a 3-Pin Male Header Mfg (FCI) P/N: 68771-203HLF.
Table 4-7. Antenna Handover (J18)
Pin No.
Signal Name
Signal
Direction
1 Antenna Handover Control A ANT_HOC_A Input
Input: Voltage and levels
per EIA-422 Specification.
2
Ground
---
---
3
Antenna Handover Control A
ANT_HOC_B
Same as Pin 1