MSD-200 Modules
The MSD-200 series is a 1U rack-mount modular device. It allows the installation of various modules, such as generators, signal splitters, and meters, in one rack-mount case.
The MSD-243 module is a 12-output TTL distribution 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.
The MSD-244 module is a 16-output RS422(Tx) 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 are RS422(Rx), TTL@50Ω, and GNSS receiver for 1PPS only. These modules split the following signals: 1PPS, ToD (NMEA), and IRIG-B DCLS.
(GNSS input) modules.
The MSD-295 module is a high-precision rubidium oscillator-driven generator of 10MHz and 1PPS reference signals. It delivers unmatched signal purity and frequency stability for 10MHz sine wave, 10MHz pulse, and 1PPS. MSD-295 can be disciplined from the internal GNSS receiver to get a more accurate UTC time scale.
Technical data (common) 
| Description | Value |
|---|---|
| Model | MSD-200, Modular Scientific Device |
| Working temperature | 0°C to 50°C |
| Humidity | 0-95% non-condensed |
| Power supply | Single or redundant, 85…264V AC, 100…370V DC or 48VDC (36-72VDC) or mixed |
| Dimensions | 1U250: small case, 444 mm (W) x 45mm (H) x 250 mm (D) – 1U – 19-inch rack mount, 10 modules 1U350: medium case: 444 mm (W) x 45mm (H) x 330 mm (D) – 1U – 19-inch rack mount, 20 modules Desktop: 250mm (W) x 45mm (H) x 275 mm (D) – 1U/10-inch, 6 modules |
| Weight | 3 – 8 kg (depends on number of modules) |
| Warranty | Three-Year Limited Warranty |
| Technical support | The company offers free lifetime technical support via email. Extended support contracts are available. |
| Power | 230VAC, 48VDC, 60W (max) |
MSD-200 splitter modules
| Part code | Type | # of Outputs | Description | Doc |
|---|---|---|---|---|
| MSD-243 | Pulse TTL | 12 | Digital signal TTL @50Ω splitter module for 1PPS, IRIG-DCLS, 10MHz. Sockets: BNC or SMA. Input card MSD-OCP. Non-isolated. | |
| MSD-244 | Pulse RS422 | 16 | Digital signal RS-422 Tx splitter module for 1PPS, IRIG-DCLS. Terminal block 3.5 mm. Input card MSD-OCP. Non-isolated. | |
| MSD-245 | Pulse RS232 | 16 | Digital signal RS-232 Tx splitter module for NMEA, ToD etc. time codes. Terminal block 3.5 mm. Input card MSD-OCP. Non-isolated. | |
| MSD-295 | — | High-precision rubidium oscillator-driven generator of 10MHz and 1PPS reference signals. | |
MSD-200 OCP cards
| Part Code | Type | Channels | Isolation | Description |
|---|---|---|---|---|
| TTLX1SMA | Pulse TTL | 1 | N | Digital signal TTL @50Ω input card for 1PPS, IRIG-DCLS, 10MHz. SMA Socket. |
| TTLX2SMA | Pulse TTL | 2 | N | 2x Digital signal TTL @50Ω input card for 1PPS, IRIG-DCLS, ToD, 10MHz. 2x SMA Socket. |
| TTLX1BNC | Pulse TTL | 1 | N | Digital signal TTL @50Ω input card for 1PPS, IRIG-DCLS, 10MHz. BNC Socket. |
| RS422X1 | Pulse RS422 | 1 | N | Digital signal RS-422 Rx input card for 1PPS, IRIG-DCLS. 1x Terminal block 3.5 mm. |
| RS422IX1 | Pulse RS422 | 1 | Y | Digital signal RS-422 Rx, isolated input card for 1PPS, IRIG-DCLS. 1x Terminal block 3.5 mm. |
| GPSFX1 | GNSS | 1 | N | GNSS receiver on Furuno GT-88 |
| GPSFX2 | GNSS | 1 | N | GNSS receiver on uBlox F9T |
| RS422X2M8 | Pulse RS422 | 2 | N | Digital signal RS-422 Rx input card for 1PPS, IRIG-DCLS, ToD. Two channels M8 4 pin. |