MSD-243
TTL signal distribution module with replaceable input cards.
The MSD-243 is a 12 outputs TTL splitter module with a replaceable input card. It is compatible with OCP cards and can be used as a multi-output splitter with signal-type conversion. Available inputs: TTL@50Ω, RS422(Rx) and GNSS receiver for 1PPS only. These modules can distribute many signals: 1PPS, 10MHz pulse, IRIG-B DCLS.
| Description | Value |
|---|---|
| Outputs | 12xTTL 50Ω up to 20MHz, SMA or BNC connector |
| Inputs | 1xRS422 Rx for 1PPS, IRIG-B DCLS, terminal block 3.5mm 1xTTL@50Ω for 1PPS, IRIG-B DCLS, up to 20MHz, SMA/BNC GNSS Receiver for 1PPS, antenna input SMA 2xTTL@50Ω with autoswitch to backup for 1PPS, up to 20MHz, SMA only—on request 2xRS422 Rx with autoswitch to backup for 1PPS, up to 10MBps, terminal block 3.5mm—on request |
| Delay | < 10ns (typ. <6.5ns) |
| Jitter | <0.2ns (typ. <0.1ns) |
| Rise/Fall time | <2 ns (typical 1.5 ns) |
| Different outputs phase dispersion | <0.7ns (typical 0.3ns) |
| GNSS card to 1PPS output | 1PPS accuracy: <50 ns 1PPS stability: < 5ns @ 1sigma /[*2] |
| Power | 12VDC @ 100mA |
| Dimensions | MSD-243.12: 168x80x40mm |
| Datasheet |  |
Hardware versions of the MSD-243
 | MSD-243.12R.SMA One RS422 (Rx@100Ω) input and 12 TTL@50Ω SMA outputs |
 | MSD-243.12T.SMA One TTL@50Ω SMA input and 12 TTL@50Ω SMA outputs |
 | MSD-243.12G.SMA One GNSS Receiver with external antenna (SMA) 1PPS source and 12 TTL@50Ω outputs |
 | MSD-243.12R.BNC One RS422 (Rx@100Ω) input and 12 TTL@50Ω BNC outputs |
 | MSD-243.12T.BNC One TTL@50Ω input and 12 TTL@50Ω BNC outputs. |
 | MSD-243.12G.BNC One GNSS Receiver with external antenna (SMA) 1PPS source and 12 TTL@50Ω BNC outputs |