Typical Operating Set-Up - Wavetek 2001 Instruction Manual

Model 200 1
OPERATING INSTRUCTIONS
@
OPTIONS
-
0
PEN L I F T OPTION (A-5) -
Provides mounting holes for BNC connectors used with special modifications or
options.
When Pen L i f t Option is installed, these
2
terminals provide contact closure during
sweep "ON" time. This option operates only when the Front Panel SWEEP
TIME Selector is set to the 100-10 SEC. position.
Figure 3-3. Typical Operating Set-up
3.4 TYPICAL OPERATING SET-UP
have a characteristic impedance o f 50 ohms, and should
be kept as short as practical (under 3 feet). I f the input
When initially setting up instrument, first check Rear
impedance of the device under test is not 50-ohms, a
Panel AC LINE VOLTAGE Selector Switch and Fuse to matching network, as shown in Figure
3-3,
should be used
ensure the instrument is set for operation with the available t o ensure a constant amplitude input signal t o the device
AC mains. under test.
-
Make connections between the Model 2001, the device
under test, and the oscilloscope as shown in Figure 3-3.
Since hum, RF leakage, and spurious signal pick-up must
be kept t o a minimum, it is essential that good connections
and grounds be maintained throughout the entire setup.
Use
coaxial cables
with
BNC
connectors wherever possible.
The RF OUTPUT cable is especially critical.
It should
R
F
DETECTOR
After the RF signal passes through the RF circuit of the
device under test it must be demodulated before being con-
nected t o the DEMOD IN of the Model 2001. I f a demodu-
lator is not a part of the device under test, one must be
added externally. (See Figure 3-3). The input impedance
of the demodulator must present the proper load t o the
RF circuit being tested. The Wavetek Model D l 5 2 RF
Detector is recommended for 50-ohm applications.
-
DEVICE
UNDER
TEST
-
MATCH l NG
NETWORK
-
Model 2001
OPERATING INSTRUCTIONS
@
OPTIONS - Provides mounting holes for BNC connectors used with special modifications or
options.
(j)
PEN LI FT OPTION (A-5) -
When Pen
Lift
Option is installed, these 2 terminals provide contact closure during
sweep "ON" time. This option operates only when the Front Panel SWEEP
TIME Selector is set to the 100-10 SEC. position.
MATCHING
NETWORK
DEVICE
UNDER
TEST
RF
DETECTOR
SCOPE
D
Figure 3-3. Typical Operating Set-up
3.4 TYPICAL OPERATING SET-UP
When initially setting up instrument, first check Rear
Panel AC LINE VOLTAGE Selector Switch and Fuse to
ensure the instrument is set for operation with the available
AC mains.
Make connections between the Model 2001, the device
under test, and the oscilloscope as shown in Figure 3-3.
Since hum, R F leakage, and spurious signal pick-up must
be kept to a minimum, it is essential that good connections
and grounds be maintained throughout the entire setup.
Use
coaxial cables with
BNC
connectors wherever possible.
The RF OUTPUT cable is especially critical. It should
have a characteristic impedance of 50 ohms, and should
be kept as short as practical (under 3 feet). If the input
impedance of the device under test is not 50-ohms, a
matching network, as shown in Figure 3-3, should be used
to ensure a constant amplitude input signal to the device
under test .
After the R F signal passes through the R F circu it of the
device under test it must be demodulated before being con-
nected to the DEMOD IN of the Model 2001. If a demodu-
lator is not a part of the device under test, one must be
added externally. (See Figure 3-3). The input impedance
of the demodulator must present the proper load to the
RF circuit being tested. The Wavetek Model 0152 RF
Detector is recommended for 50·ohm applications.
3-5