Symmetricom 5071A, Operating And Programming Manual

Page: 49 / 194

Chapter 2 Using the 5071A
Monitoring Status
Operating and Programming Manual 21
Monitoring Status
Use the following procedures to check the 5071A‘s operational status and selected
internal parameters.
To Select Parameters
Press Shift , then 7 (INFO): display shows instrument status.
Select the reading you want to check then use the cursor keys to examine the
instrument’s status.
To Interpret Displayed Results
The front-panel LCD display shows the current status (or value) of the selected
parameter. Refer to Table 2-2 below for typical internal-parameter operating ranges
and definitions.
Table 2-2. Internal Operating Parameters
Parameter Description Typical Range
Pump Ion pump current 0 - 40 µA
Ovens Cesium beam tube and VCXO Oven
monitor 0 to 10V, and
-5 to -10V
Ctrl VCXO control voltage -95 to 95%
C-Field C-field control current 10.0 to 14.05 mA
Ampl Microwave signal strength for CBT
(% of maximum) 0 to 100%, and
0 to 100%
E_Mult CBT electron multiplier voltage 1000 to 2553V
Gain Frequency control loop gain
(% of maximum) 14.4 to 58%
Power Voltage source AC, DC, or Battery
To Print a Status Report
Use the following procedure to print a status report when a printer is connected to the
rear-panel RS-232C serial port (see page 27).
1 Select the INFO menu.
2 Select the PRINT option and press Enter .