Adjustment Procedures; Preparation - Icom IC-T81E Service Manual

SECTION 5

5-1 PREPARATION

' ' REQUIRED TEST EQUIPMENT
EQUIPMENT
Output voltage
DC power supply
Current capacity
Measuring range
RF power meter Frequency range
(terminated type) Impedance
SWR
Frequency range
Frequency counter Frequency accuracy : ±1 ppm or better
Sensitivity
Frequency range
FM deviation meter
Measuring range
' ' ENTERING THE ADJUSTMENT MODE
q Connect a 68 kΩ terminator to the [SP] jack.
w Push and hold the [SQL] key, and then turn power ON.
Note: The frequency of wide range appears at the display using this operation.
CONNECTION
FM Deviation
meter
RF power meter
10 W/50
Frequency
counter
Standard signal
generator
CAUTION:
DO NOT transmit while
an SSG is connected to
the antenna connector.
AD-92SMA
Optional SMA–BNC adaptor

ADJUSTMENT PROCEDURES

GRADE AND RANGE
: 13.5 V DC
: 3 A or more
: 1–10 W
: 28–1500 MHz
: 50 Ω
: Less than 1.2 : 1
: 0.1–1500 MHz
: 100 mV or better
: 30–1500 MHz
: 0 to ±10 kHz
to the antenna connector
Attenuator
40 dB or 50 dB
EQUIPMENT
DC voltmeter Input impedance
Frequency range
Audio generator
Measuring range
Frequency range
Standard signal
Output level
generator (SSG)
Frequency range
Oscilloscope
Measuring range
AC millivoltmeter Measuring range
Attenuator Power attenuation
JIG
to [SP] jack
1/8" (3.5 mm)
3-conductor plug
to [MIC] jack
5 - 1
GRADE AND RANGE
: 50 kΩ/V DC or better
: 300–3000 Hz
: 1–500 mV
: 28–1300 MHz
: 0.1 µV–32 mV
(–127 to –17 dBm)
: DC–20 MHz
: 0.01–20 V
: 10 mV–10 V
: 40 or 50 dB
+
68 k
-
Audio generator
AC millivoltmeter
Power supply
13.5 V / 3 A