The last 30 frames of data from the radio are stored
and can be recalled for further analysis. To recall a
frame, enter a number from 0 to 29 in the “Frame:”
field (29 being the most recent), and the selected
frame will be displayed. To reset the “Frame:” and
“Frame Counter:” fields, press the
frame reset
softkey.
The “Raw:” field displays the captured link control
format data for a single frame in hex format.
22-3
PROJ 25 CONV RADIO RECEIVE
TESTS (Generate Mode)
This section describes the basic test setup for
testing Project 25 radio received voice and
embedded data.
NOTE
If the selected radio channel is encrypted, select
the analyzer encryption algorithm and key as
described in Section 21-7.
1. Place the cursor in the RF Zone and configure
the analyzer in Generate mode as shown in the
example below:
2. Select the desired frequency that matches the
radio under test; 806.0625 MHz is used in this
example.
3. Connect the RF input/output of the radio under
test to the RF I/O port of the analyzer as shown
in Figure 21-4.
4. Press the
AUD
hardkey to place the cursor in
the Audio Zone and make the selections shown
below. External must be set to a value and
turned on with ~ to enable the input from the
microphone of the analyzer.
5. Place the cursor on VOICE FRAME in the
Audio Zone, and press the
display table
softkey. The VOICE FRAME ENCODE screen
shown in Figure 21-14 will be displayed.
6. Insert the appropriate values into each of the
fields of the VOICE FRAME ENCODE table or
press the
default frame
softkey to enter pre-
programmed values. It is essential to enter the
correct Network ID code that matches the radio.
This can be determined from the VOICE
FRAME DECODE table when monitoring the
transmitted voice frames from the radio (refer to
Section 22-2).
7. Press the
return
softkey from the VOICE
FRAME ENCODE screen.
8. Press the
DISP
hardkey then move the cursor to
the “Display:” field and select the
CLEAR
SCOPE
softkey.
9. Connect a microphone to the analyzer and press
the PTT. Note that when the microphone PTT
is pressed, the Project 25 analog voice can be
observed on the CLEAR SCOPE in the Display
Zone. Turn on the radio and talk into the
microphone of the analyzer. If the radio is
operating, the received voice will be heard from
the speaker of the radio.
22-4 BER TESTING THE RADIO
RECEIVER (Generate Mode)
This application example describes the receiver test
for radios that have BER test capability. The
receiver must have the capability of comparing an
unencrypted received signal with a stored 1011 Hz
Tone Test Pattern. Performance of this test requires
the analyzer to operate in Generate mode with
either 1011 Hz Tone Test Pattern or Calibration
282
Summary of Contents for R2600 Series
Page 8: ...3 7 1 3 AC DC Voltmeter 41 3 7 1 4 INT DIST EXT DIST Meter 43 v...
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Page 66: ...DISPLAY ZONE RF ZONE AUDIO ZONE Figure 3 1 Screen Zone Arrangement 20...
Page 68: ...Figure 3 2 System Help 22...
Page 83: ...Figure 3 11 General Sequence Mode Select 37...
Page 85: ...39 Figure 3 12 RF Display Zone...
Page 88: ...Figure 3 14 Digital Voltmeter Screens 42...
Page 102: ...Figure 3 22 Bar Graphs 56...
Page 107: ...Figure 3 24 Memory Screens 61...
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Page 205: ...Figure 11 1 R 2670 with SECURENET Option Housing 159...
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Page 218: ...Figure 13 8 Test Key Programming Display Figure 13 9 External Key Programming Display 172...
Page 225: ...Figure 13 12 Duplex Mode Display Zone 179...
Page 234: ...VOICE Figure 13 17 CLEAR SCOPE Markers 188...
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Page 249: ...Figure 14 8 SECURENET CLEAR SCOPE Display of Output Modulation 203...
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Page 267: ...Figure 17 7 Encryption Select Display Figure 17 7 Encryption Select Display 221 221...
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Page 291: ...Figure 18 1 Radio BER Test Mode Audio Zone Figure 18 2 Radio BER Test Mode BER Meter 245...
Page 293: ...Figure 18 4 Receive BER 247...
Page 298: ...Figure 18 6 ASTRO CLEAR SCOPE Display of Output Modulation 252...
Page 304: ...Figure 21 1 PROJ 25 Version Screen Figure 21 2 PROJ 25 Options Screen 258...
Page 309: ...Figure 21 6 SET UP Display Screen Figure 21 7 Encryption Select Display 263...
Page 335: ...Figure 22 4 PROJ 25 CONV CLEAR SCOPE Display of Output Modulation 289...
Page 339: ...Figure 24 1 PROJ 25 Version Screen Figure 24 2 PROJ 25 Options Screen 293...
Page 354: ...Figure 25 3 Encryption Select Display Figure 25 4 Algorithm Select Display 308...
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