GE OPTIMA MR360 Service Training page 123

Driver Module Input and Output Signals:
1. Head T/R Bias (J6) to SRFD3: +8VDC(@4.25A)/-14.4VDC(@400mA)
2. Body T/R Bias (J7) to SRFD3: +5VDC(@5.5A)/-14.4VDC(@400mA)
3. Dynamic Disable Bias (J21/22/24/25) to Body Coil: 500VDC/ -1A(@-3.7VDC)
4. Direct Drive Bias (J23) to Body Hybrid: 500VDC/-1A(@-3.7VDC)
5. MC Aux Power (J3): +/-15VDC used by coils to generate preamp bias for preamps in
coils.
6. MC Preamp Power (J3): +15VDC used in LPCA to generate preamp bias for preamps
in LPCA.
7. MC Switch Control (J3): signals go to 8-Channel Switch Board to control 8-Channel
Switch Board operation.
8. MCD 0-7 (J5): Multicoil T/R Bias to multicoils (+3/+5/+7/-5VDC@(0.5A)).
9. Unblank signal input (J19) from Exciter goes to CAM Lite2 (J11, J12, J13). DM can
disable RF by disabling Unblank if bias faults.
10. CAN link (J1/J2): come from PHPS Lite2, go to GP3 from DM.
11. HV/TR/DD/MC Fault Disable Switches: service facilities in DM.
12. Serial High-speed data input (J4): This input will provide the high-speed differential
data necessary for "on-the-fly" coil switching. This data will be used only for intra-scan
modification of MC_SELECT to change the selection of the MC driver outputs.
It will modify only the drivers selected to switch to "receive mode" and will not have
the capability of modifying the driver's positive output voltage level or any fault
detection levels.
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