artisan 8640B - Output Impedance Test Setup (in Band)

Model 8640B TM 9-4935-601-14-7&P
PERFORMANCE TESTS
4-26. OUTPUT IMPEDANCE TEST (In Band) (Cont'd)
Figure 4-13. Output Impedance Test Setup (In Band).
EQUIPMENT:
Directional Coupler....................................................................HP 778D OPT 12
Adapter (Male Type N to GR 874) ................................................ HP 1250-0847
Adjustable Stub.............................................................General Radio 874-D50L
Vector Voltmeter .................................................................................HP 8405A
509Ω Tee...........................................................................................HP 11536A
502Ω Termination ..................................................................................HP 908A
PROCEDURE:
1. Connect equipment as shown in Figure 4-13 after setting Signal Generator's controls as follows:
Meter Function..........................................................................................LEVEL
COUNTER MODE: EXPAND ..........................................................................Off
LOCK ..............................................................................Off
Source............................................................................ INT
AM................................................................................................................OFF
FM ................................................................................................................OFF
RANGE.........................................................................................256 - 512 MHz
FREQUENCY TUNE..............................................................................512 MHz
OUTPUT LEVEL......................................................±10 dBm (Switch 1 step ccw
from full cw)
RF ON/OFF ....................................................................................................ON
4-38
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