Fp-561 Transmitter Adjustment; Fp-561 Receiver Adjustment; Fp-561 Water Temperturem Adjustment - Icom FP-561 Service Manual

4-2 FP-561 TRANSMITTER ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITION
OUTPUT 1 • Connect a transducer to the
[TRANSDUCER] connector.
POWER
• Mode
• Frequency
• Depth range
2 • Frequency

4-3 FP-561 RECEIVER ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITION
RECEIVE 1 • Mode
SENSITIVITY • Frequency
• Depth range
• STC
• Connect a standard signal gener-
ator to the [TRANSDUCER] con-
nector J2 via the coupler and set
as:
Fequency
Level
2 • Frequency
• Set an SSG as :
Frequency
Level
3 • Set an SSG as :
Frequency
Level
*This output level of the standard signal generator (SSG) is indicated as SSG's open circuit.
4-4 FP-561 WATER TEMPERTURE ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION
WATER 1 • Connect
TEMPERATURE between pin 6 and pin 7 of the
[TRANSDUCER] connector J2.
UNIT
MAIN
: [SOUNDER]
: [H]
: 640 m
: [L]
UNIT
: [SOUNDER] MAIN
: [H]
: 5 m
: [1]
: 200 kHz
: 1 mV (–47 dBm)
: [L]
: 50 kHz
: 1 mV (–47 dBm)
: 50 kHz
: 100 mV (–7 dBm)
UNIT
a 10 k resistor Display
MEASUREMENT
LOCATION
Connect an oscillo- 880–1320 Vp-p
scope between pin at maximum wave
3 and pin 5 of J2. point
MEASUREMENT
LOCATION
Connect a DC volt- Maximum DC voltage
meter or oscillo-
scope to the check
point "RSSI".
MEASUREMENT
LOCATION
25.0 ˚C
4 - 2
ADJUSTMENT
POINT
VALUE
UNIT ADJUST
ADJUSTMENT
POINT
VALUE
UNIT ADJUST
MAIN
ADJUSTMENT
POINT
VALUE
UNIT ADJUST
LOGIC
Verify
Verify
L1
L6
R99
R131