M e r i d i a n I I U s e r M a n u a l
126
C H A P T E R T E N
127
M e r i d i a n I I U s e r M a n u a l
R E A R - P A N E L I / O
RS-232_COMM_FAULT
The Questionable Data is also summarized in a 16 bit register, of which
only 3 bits are used to indicate these condition:
TIME (time-of-day clock is not set)
FREQUENCY (out-of-lock)
PHASE (spurious bursts)
Also reported are the:
Cs Beam current (typical range unspecified),
C-Field current (10.0 to 14.05 mA, typical),
Ion Pump current ( 0.0 to 40.00 uA, typical),
Electron-multiplier voltage (1000 to 2553 V, typical),
Cs Oven voltage ( 0 to 10 V, typical),
Signal Gain percent of maximum (14.4 to 58.00 %, typical),
RF Amplitude 1 percent of maximum ( 0 to 100 %, typical),
RF Amplitude 2 percent of maximum ( 0 to 100 %, typical),
Oscillator Oven voltage ( -5 to -10 V, typical),
Oscillator Control percent of maximum ( -95 to +95 %, typical)
Example response:
Operation Status: NORMAL STEERED
Questionable Data: OK
Operating Parameters:
Cs Beam Current 0.100 uA
C-Field Current 12.168 mA
Ion Pump Current 0.0 uA
E-Multiplier Voltage 1890 V
Cs Oven Voltage 7.9 V
Signal Gain 14.4 % of maximum
RF Amplitude 1 35.8 % of maximum
RF Amplitude 2 34.8 % of maximum
Osc Oven Voltage -9.0 V
Osc Control +3.46 % of maximum
Faults
A 5071A alarm will show on the Meridian II if any of these conditions occur on the 5071A:
Operation Status - STANDBY or FATAL
Questionable Data - FREQUENCY or PHASE.
COMM_FAULT
For information on the Meridian II faults, see
Appendix G - System Faults
.
Summary of Contents for Meridian II
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