Icom D-STAR ID-31A; D-STAR ID-31E, Service Manual

Page: 19 / 41

5 - 4
• IDLING CURRENT ADJUSTMENT (at 13.5 V)
Select an adjustment item using
/
, and then set the adjustment value as specifi ed using [DIAL] .
ADJUSTMENT
ADJUSTMENT
ITEM
OPERATION VALUE
DRIVE AMP
IDLING CURRENT
[ID1]
1 1) Set the power supply voltage to 13.5 V. (supplying from [DC IN] )
2) Connect an RF power meter to the antenna connector.
3) Connect a ammeter between the power supply and transceiver.
4) Set the item
[IP1] to "00."
–
(Hi power) 2 • While transmitting, adjust the idling current using [DIAL] , and then
push [ENT] to store the adjustment value.
100–120 mA
(Mid power) 3 90–110 mA
(Low power) 4
80–100 mA
(S-Low power) 5
FINAL AMP
IDLING CURRENT
[IP1]
1 1) Set the power supply voltage to 13.5 V. (supplying from [DC IN] )
2) Connect an RF power meter to the antenna connector.
3) Connect a ammeter between the power supply and transceiver.
–
(Hi power) 2 • While transmitting, adjust the idling current using [DIAL] , and then
push [ENT] to store the adjustment value.
550–670 mA
(Mid power) 3 350–450 mA
(Low power) 4
140–240 mA
(S-Low power) 5
NOTE: When " IDLING CURRENT " is adjusted, " TRANSMIT POWER " must be also re-adjusted.
• TRANSMIT POWER ADJUSTMENT (at 5.5 V)
Select an adjustment item using
/
, and then set the adjustment value as specifi ed using [DIAL] .
ADJUSTMENT
ADJUSTMENT
ITEM
OPERATION VALUE
TRANSMIT
POWER
[PO5]
1 1) Set the power supply voltage to 5.5 V.
2) Connect an RF power meter to the antenna connector.
3) While transmitting, adjust the TX power using
[DIAL ], and then
push [ENT] to store the adjustment value.
80–120 mW
(BAND LOW) 2
(BAND HIGH) 3
NOTE: When " IDLING CURRENT " is adjusted, " TRANSMIT POWER " must be also re-adjusted.
• TRANSMIT POWER ADJUSTMENT (at 7.4 V)
Select an adjustment item using
/
, and then set the adjustment value as specifi ed using [DIAL] .
ADJUSTMENT
ADJUSTMENT
ITEM
OPERATION VALUE
TRANSMIT POWER
[PO7]
1 1) Set the power supply voltage to 7.4 V.
2) Connect an RF power meter to the antenna connector.
–
(Hi power)
[BAND LOW] 2 • While transmitting, adjust the TX power using [DIAL] , and then
push [ENT] to store the adjustment value.
4.8–5.2 W
[BAND HIGH]
(Mid power)
[BAND LOW] 3
2.3–2.7 W
[BAND HIGH]
(Low power)
[BAND LOW] 4
0.4–0.6 W
[BAND HIGH]
(S-Low power)
[BAND LOW] 5
80–120 mW
[BAND HIGH]
5-3 TRANSMIT ADJUSTMENT (Continued)