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16.2 REQUIRED TEST EQUIPMENT
Table 16-1: Required Test Equipment
TEST EQUIPMENT
COMMENTS
PC or Laptop PC
•
With Microsoft Windows
®
95 (or greater) operating system and a termi-
nal application to issue commands through the COM1 serial port (such as
HyperTerminal).
Recommended HyperTerminal Settings:
General (tab):
Settings
(tab):
Connect Using: COM1
Terminal Keys (selected)
Configure (button)
Emulation = VT100
Bits Per Second = 19200
Backscroll Buffer Line = 500
Data Bits = 8
ASCII Setup (button)
Parity
=
None
Everything
unchecked
Stop Bits = 1
Line Delay & Character = 0
Flow Control = None
Terminal Settings (button)
132
Column
Mode
=
unchecked
Character
Set
=
ASCII
TIA/EIA-232 Serial
Cable
•
With 9-pin D-Subminiature Male-Female Connectors, 1:1, shielded
(Option MAMROS0055 or equivalent)
Wattmeter
•
Bird Electronic Corporation Model 43 or equivalent, with N-type female
connectors on both the input and output sides.
As an alternative to using a wattmeter, a Voltage Standing Wave Ratio
(VSWR) meter, Bird Electronic Corporation Model 4391A or equivalent can
be used to carry out the required RF (Radio Frequency) power testing.
Wattmeter
Slug
For use with the wattmeter; rated power of 25 watts and frequency range
appropriate to the 800 MHz output of the mobile radio [Bird Electronics
Element 25E (25 watts, 400–1000 MHz) or equivalent].
Coaxial Jumper
Cable
•
50 Ohm Coaxial Cable with TNC-type male connector on one end and
N-type male connector on the other end, approximately three feet in
length (Pasternack Enterprises PE3661-36 or equivalent).
This cable
must
have VSWR below 1.5:1 at 800 MHz.
N-Type to TNC
Adapter
N-type male to TNC-type female (Pasternack Enterprises PE9090 or
equivalent).
Dummy Load
RF terminator rated at 50-ohm resistance and greater than 50 watts power,
with N-type male connector (Pasternack Enterprises PE6106 or equivalent).
Vehicle-Mounted
Antenna
Tests are performed with the vehicle-mounted antenna per the installation
described in Section 7 of this manual.
16.3 TESTING WITH A DUMMY LOAD
Figure 16-1 shows basic interconnections required for the following test procedure.
1.
Using the N-type male to TNC-type male coaxial jumper cable, connect the radio’s antenna connector
to the wattmeter’s input.
2.
Connect the dummy load to the wattmeter’s output (in place of the antenna cable and the antenna).