COM-power corporation CDN-T8SE Instrukcja obsługi - Strona 10
Przeglądaj online lub pobierz pdf Instrukcja obsługi dla Sprzęt testowy COM-power corporation CDN-T8SE. COM-power corporation CDN-T8SE 12 stron. Shielded coupling/decoupling networks
6.2
Test Level Calibration
Before you begin testing with the CDN you will need to establish a calibrated drive levels
corresponding to your desired test levels. During drive level calibration the RF signal level
being injected to the CDN is adjusted incrementally until the voltage level measured at the
150Ω to 50Ω adapter connected to the EUT port is approximately equal to the Umr (150)
value given in table 1, and thes signal generator output, or forward power delivered to the
CDN is recorded. This process is then repeated at each frequency starting at 150 kHz with
step sizes no greater than 1% of the preceding frequency value up to 80 or 230 MHz. This
equates to 633 discrete test frequency points up to 80 MHz and 739 points up to 230 MHz.
Record the signal generator output at each frequency. Typical test level calibration setup is
shown in figure 1 below.
6.2.1 Automating the calibration and running test using CSAT.
The entire calibration and process described above can be performed manually, but it is very
time consuming and tedius process. This process can be can be automated using the CSAT
software available from Com‐Power. Please call Com‐Power for more information.
A
B
RF OUT
Ground plane
A
Optional PC Running CSAT Software
B
Signal Generator
C
Power Amplifier (ASC‐series)
D
6 dB Power Attenuator
E
Optional Power meter
F
Optional Directional Coupler (DCU or
DCD series)
19121 El Toro Rd ● Silverado, California 92676 ● (949) 459‐9600● com‐power.com
Shielded T‐series Coupling/Decoupling Networks (CDN)
D
C
RF OUT
RF IN
Figure 1: Typical Test level calibration setup
G
H
I
J
K
E
MONITOR
PORT
IN
RF I N
OUT
F
RF IN
G
EUT
AUX
H
I
CDN‐MT4SE/CDN‐T8SE
Shorting adapters – ADA‐T4SE, ADA‐T8SE
ADA‐515 – 150Ω to 50Ω adapters
Power Attenuator (ATTN‐30‐100W)
Spectrum analyzer / Power Meter
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INSTRUCTION MANUAL
50Ω
IN
K
J
REV021215