| Drawing: | RCT001/1 |
| EOS Drawing: | |
| Limits: | two-level East and West. |
| the normal limits are for channel 1, the FS limits are channel2 | |
| HA Preload: | PMAC#2 |
| HA Drive Amplifier: | Amp 1 Copley (413) |
| Preload Drive Amplifier: | Amp 2 |
| Encoder: | 3600 line BEI (14400 pulses/turn) |
The Hour Angle drive is operated using the point, offset and preload commands (see Sections 5.1.13, 5.1.11 and 5.1.15).