Operation & Service Manual
Section IV
Model 1805B RF Control Unit
Testing
Figure 4-1 Closed Loop Stability Setup
a. Setup equipment as shown in Figure 4-1. Listed below are the point-to-point
connections:
• Connect the RF output of the frequency generator to the input of the Model 1727A
amplifier.
• Connect the output of the amplifier to the RF IN connector of the Feedthrough Standard
(1109 or 1807A)
• Connect the 1805’s red and black MOUNT BIAS connectors (E1 and E2) to the
feedthrough thermistor mount’s Mount Bias inputs (on the 1109-J2 and J3; on the
1807A - MOUNT BIAS connectors J3 and J4).
• Connect the 1805’s Temperature CONTROL output J1 to the Feedthrough Thermistor
Mount’s Temperature Control input (on the 1109,
connect
to Temperature Control connector
J1; on the 1807A,
connect
to the MOUNT Heaters connector J9).
4-
7
MODEL
NOMENCLATURE
TEGAM 1109/
Feedthrough Thermistor Mount
1807A/1116/1117A/1119
Weinschel 44-10 or equivalent
Calibrated Fixed Attenuator, 10 dB
HP 436A/8481A or equivalent Power Meter with Sensor*
Any PC Controller with National Instruments IEEE-488
(GPIB) interface
Any Windows Compatible Printer
TEGAM SYSIIA-Surecal Surecal Windows ™ Software
Any Synthesized CW Signal Source, +10 dBm, 0.01-18 GHz*
TEGA
M
1727A or equivalent RF Amplifier
* Model used dependent on frequency range of feedthrough mount used.
