General Dynamics R2600 Series User Manual

4. With the cursor located within the Display
zone "Meter:" location, press the RF
DISPLAY
softkey:
RF
DI SPLAY
AC
VOLLTS
RF
SCAN
RF
Display
5. Key the transmitter and read the power
(Input Level) and frequency error (Freq
Err). Refer to your radio's service manual to
determine if power and frequency are within
specified limits and determine if any
adjustments are required.
Meter: RF DISPLAY
Mon Freq: 816.500 MHz
Freq Err: + 47 Hz
Dev: 3.5 kHz
Input Lvl: -70.5 dBm
4-1.3 Modulation Measurements
1.
Key up the transmitter with appropriate PL
(or DPL) enabled.
NOTE
If mic pickup results in deviation errors,
install the internal 300 Hz lowpass filter as
detailed in paragraph 3-8.5 before making the
following measurements and verifications.
2. When monitoring the PL (or DPL) deviation
as follows, refer to your radio's service
manual to determine if any adjustments are
required.
Meter: RF DISPLAY
Mon Freq: 816.500 MHz
Freq Err: + 47 Hz
Dev: 750 Hz
Input Lvl: -70.5 dBm
3. Remove the internal 300 Hz lowpass filter if
installed.
Introduce a 1 kHz audio modulating signal
from the MOD OUT connector located on
the front panel of the analyzer to your radio.
Check your radio's service manual to deter-
mine the minimum audio signal level re-
quired for proper MIC sensitivity as well as
the maximum level required to ensure
proper IDC (Instantaneous Deviation
Control) function.
66

General Dynamics R2600 Series Specifications

General

Brand	General Dynamics
Model	R2600 Series
Category	Measuring Instruments
Language	English