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# RANCHO TECHNOLOGY, INC.
RTSDA-M2/RTSDA-S2/RTSDA-SP
Data bus: None
Size: 3.25 in. form factor (RTSDA-S2)
10 in. x 10.5 in. x 3.0 in. (RTSDA-SP)
Hard drive Fast SCSI-2 devices, single-ended to
supported: differential converter
Floppy drives None
supported:
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-------------------------------------------+----------------|
| 50-pin single-ended SCSI connector - | J1 |
| internal | |
|-------------------------------------------+----------------|
| 50-pin differential SCSI connector - | J2 |
| internal | |
|-------------------------------------------+----------------|
| Converter active LED | J3 |
|-------------------------------------------+----------------|
| SCSI active LED | J4 |
|------------------------------------------------------------|
| Note: On the RTSDA-SP model, the converter LED is located |
| on the front panel and the 50-pin connectors are external. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TERMINATION SELECTION |
|------------------------------------------------------------|
| Function | Single-End | Differential-End | |
|--------------+------------+------------------+-------------|
| | | W3 | RN1-4 | RN5-8 |
|---+----------+------------+------------------+-------------|
| » | Enable | Closed | Installed | Installed |
|---+----------+------------+------------------+-------------|
| | Disabled | Open | Not installed | Not |
| | | | | installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TERMINATION POWER SETTINGS |
|------------------------------------------------------------|
| Function |Single-side|Differential-side| |
|----------------+-----------+-----------------+-------------|
| | | W1 | W2 | W4 | W5 |
|-+--------------+-----------+-----------------+------+------|
|»|TERMPWR | Open | Closed |Closed| Open |
| |supplied to | | | | |
| |converter | | | | |
| |terminators | | | | |
| |directly | | | | |
|-+--------------+-----------+-----------------+------+------|
| |TERMPWR | Open | Open | Open | Open |
| |supplied to | | | | |
| |converter | | | | |
| |terminators | | | | |
| |through diode | | | | |
|-+--------------+-----------+-----------------+------+------|
| |TERMPWR | Closed | Open | Open |Closed|
| |supplied to | | | | |
| |both converter| | | | |
| |terminator and| | | | |
| |remote SCSI | | | | |
| |bus pin 26 | | | | |
| |through diode | | | | |
| |(with backflow| | | | |
| |prevention) | | | | |
|-+--------------+-----------+-----------------+------+------|
| |TERMPWR | Closed | Closed |Closed|Closed|
| |supplied to | | | | |
| |both converter| | | | |
| |terminators | | | | |
| |and remote | | | | |
| |SCSI bus pin | | | | |
| |26 directly | | | | |
|------------------------------------------------------------|
|Note: Do not use the last option when other peripherals |
|supply terminator power to the SCSI bus. |
+------------------------------------------------------------+