d. Control Panel Assembly.
FIGURE 1-5. CONTROL PANEL.
(1) The Control Panel Assembly (figure 1-5) is a fabricated unit which is part of the RMHS Reference Gyro Set
Case. It is permanently mounted in the lower right corner of the case and contains a DC VOLTMETER, POWER
POLARITY INDICATORS, DRIFT BIAS ADJ, CIRCUIT BREAKER and POWER ON-OFF-POLARITY switch.
(2) The external dc power source is connected to the input circuit of the Control Panel Assembly. Input circuitry in
the Control Panel Assembly checks for correct input dc voltage polarity and operates either the correct or incorrect
polarity lamp. The Control Panel Assembly makes proper distribution of voltages and signal data to the Gyro, Inverter
and Angle Position Indicator. The dc voltmeter is used in conjunction with the Gyro drift bias adjustment to assure that 6
Vdc +0.010 is applied to the Gyro Bias Circuit.
e. Cable Assemblies.
(1) The RMHS Reference Gyro Set has four cables connected to the Control Panel Assembly, as part of its signal
distribution and interface circuit, which provides interconnections to the Gyro unit, Power Inverter, Angle Position
Indicator, and External Power (which is polarized).