Comtech EF Data HPCST-5000 - Manual (Page 81)

High-Power TWTA Satellite Terminals Single Thread System Installation
Rev.1 2–35
2.4.2.1.3 Analog Status Circuits
1. Helix Current Monitor (Pin 14). The TWT’s helix current may be determined by
monitoring the voltage on Pin 14. There are 2 mA of current for each volt
measured. Return = Pin 16.
2. High Voltage Monitor (Pin 15). The high voltage level may be determined by
monitoring the voltage in Pin 15. This output (VDC) is proportional to the high
voltage (1000/1). Return = Pin 16.
3. TWT Temperature Monitor (Pin 17). The TWT collector temperature may be
determined by monitoring the voltage on Pin 17 and referring to the chart in
Figure 2-5. Return = Pin 16.
2.4.2.1.4 Output Voltage Circuits
1. +24 Volts (Pin 1). 24 VDC at 100 mA is available for external use.
2. +15 Volts (Pin 19). 15 VDC at 100 mA is available for external use or for
powering the control and status circuit indicators.