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Test Procedure Perform test as described below.
Step 1. Connect Test Ports 1 and 2 together using a
high-quality through line (below).
Step 2. Reset the VNA using the Default Program key.
Step 3. Set up the VNA as shown in table at left.
Step 4. Observe the sweep indicators and allow at least one
complete sweep to occur on all four channels.
Step 5. Verify that the minimum amplitude meets the speci-
fications shown below.
Model Test Channel Reference Channel
37247E >-26 dB >-35 dB
37347E >-31 dB >-33 dB
37269E >-40 dB >-40 dB
37369E >-34 dB >-34 dB
37297E >-60 dB >-55 dB
37397E >-60 dB >-55 dB
NOTE
Use the Marker Menu and Readout Marker keys ( left) and
menus to obtain precise frequency and amplitude values.
37xxxE OM 11-5
OPERATIONAL CHECKOUT NON-RATIO POWER
PORT 1 PORT 2
TEST PORT 1
TEST PORT 2
Key Menu Choice
Options
Menu
Non-Ratioed Parameters,
see Figure 11-2
Setup
Menu
START: 1 GHz
STOP: High-End Fre
-
quency
Channel
Menu
FOUR CHANNELS
Graph
Type
LOG MAGNITUDE
(All channels)
S-PARAMS USER 1: (Channel 3)
Parameter: Ra/1
Phase Lock: Ra
USER 2: (Channel 1)
Parameter: Ta/1
Phase Lock: Ra
USER 3: (Channel 2)
Parameter: Tb/1
Phase Lock: Ra
USER 4: (Channel 4)
Parameter: Rb/1
Phase Lock: Rb
SET
SCALE
RESOLUTION:
20 dB/DIV
REF VALUE:
0dB
(All four channels)
.
-
Measurement
Enhancement
Channels
Display
Marker
Menu
Readout
Marker