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9.Tables and Summaries
9.1Adjusting trimmers
Six trimmers are installed on the ISP board with the following functions:
T7 (Gain 1) - CW rotation increases input 1 gain.
T6 (Gain 2) - CW rotation increases input 2 gain.
T5 (Balance) - see 8.1.
T4 (compensation) - See 8.6.
T3 (Ip) - CW rotation increases peak current limit (see 8.2).
T2 (Ic) - CW rotation increases continuous current limit (see 8.2)
9.2LED diagnostics
Four LEDs are installed on the ISP with the following designations: Ic, In, Vs, SO. Under normal operation only Vs should illuminate (Vs indicates the existence of supply voltages). The following table represents the faults indications of the LEDs:
| 1 | 2 | 3 |
Ic |
| X |
|
In | X |
|
|
Vs | X | X | X |
SO |
|
| X |
X - Illuminated LED
1.One or more of: external inhibit, under/over voltage, short circuit, excess temperature, loss of tacho or insufficient load inductance.
2.Continuous current limit.
3.The shunt is "ON".
ISP - Rev 6/95
