Mode Select; Simultaneous Generate And Measurement Operation - Motorola R-2200 Operator's Manual

4.3.2 MODE SELECT
The modulation mode is selected using the "MODE"
switch. AM, FM, and CW (no modulation) are available.
4.3.3 SIMULTANEOUS GENERATE AND MEASURE-
MENT OPERATION
The following test setups and LCD displays are examples
of simultaneous generate and measurement operation.
1. Connect the RF In/Out to the mobile radio antenna
connector and the multipurpose measurement input
to the receiver audio output.
2. Set the function switch to GEN and
IL' : :!.J
to Dev.
3. Enter the frequency by pressing
EJCD000000EJ
4. Adjust the 1 KHz level for 3.0 KHz deviation and
then move the cursor
IL' : :!.J
to SINAD.
5. Adjust the RF venier for 12 dB SINAD indication.
6. Read the receiver sensitivity in microvolts or dBm.
7. Increase the RF generator level to 100 uV.
8. Move the cursor
I L' : :!.j
to Dist. Read the receiver
distortion in %.
9. Move the cursor
IL' : :!.J
to DVM.
10. Select AC or DC volts using
I:C::\
switch. If oscillo-
scope display is desired select the proper external
vertical trigger for oscilloscope display.
11. Apply test signals from the receiver audio stages to
the unit's VERT/SINAD/DIST/DVM input. The
same x1 test probe used for SINAD and Distortion
may be used.
12. The voltage can be read on the left LCD display or
viewed on the oscilloscope.
RF
GEN 154.5500
I I 11 I I I I
12.0 dB
IN/OUT Vert/SINAD
Dist/DVM
MOBILE
RECEIVER
FIGURE 4-1-TEST SET-UP FOR FM RECEIVER
SENSITIVITY
4-2
4.3.4 TEST PAGER DECODE AND ALERT FUNCTION
The internal programmable code synthesizer generates
PRIVATE LINE (PL) AND DIGITAL PRIVATE
LINE (DPL) squelch codes, two-tone sequential paging
and base station tone remote control signal continuously
or in burst cycles as an internal modulation source. In
addition to the code synthesizer, modulation is simul-
taneously available from an independently adjustable
internal 1 KHz tone generator as well as from external
input sources.
1. Connect the pager test fixture to the RF In/Out Con-
nector.
2. Set the FUNCTION switch to GEN and enter the
frequency from key board.
EJCD000000EJ
3. Select the paging format. Enter the pager tone code
frequencies. Start by pressing 1~::
J
4. Activate by placing the Code Synthesizer switch in the
burst (momentary) or continuous position and adjust
Code Synth Lvl for 3.3 KHz deviation. A functional
pager will respond.
D
GEN 154.5500
RF IN/OUT
Pager
FIGURE 4-2-TEST SET -UP FOR
PAGER AND ALERT FUNCTIONS
NOTE: A/B T & V has preprogrammed timing sequences
for two-tone sequential tone and voice paging. A/B V AR
is user programmable. Variable timing sequences are
used for other signalling systems.