Connecting the Proper Sensor
There are many thermistor based RF power sensors available. The Model 1830A is
designed to bias either 100 Ω or 200 Ω mounts and has dual bridges for balancing both RF
sense and compensation thermistors such as contained in the Agilent 478A and 8478B. It
also is works with the Agilent 486A series of waveguide sensors and includes a heater
circuit for all TEGAM and Weinschel ovenized thermistor mounts.
To connect a TEGAM temperature compensated thermistor mount (F1130A, F1130B,
F1135A, etc.) the following cables will be needed.
Figure 4.2 - CA-7-48
Sensor Cable (15XX/25XX, 48” or 15”) CA-21-48/CA-21-15
Heater Cable (F113X, 48” or 15”) CA-11-48/CA-11-15
Sensor Cable (F/M113X 48” or 15”) CA-7-48/CA-7-15
Heater Cable (M113X, 48”) CA-10-48
To connect an Agilent model thermistor mount (8478B, S486A, G486A, J486A,
H486A, X486A, M486A, P486A, K486A, and R486A) the following cables will be
needed.
Figure 4.3 – CA-6-48
Agilent Thermistor:
Sensor Cable (Agilent Mounts, 48”) CA-6-48
These sensors are not ovenized so no heater cable is needed.
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