IFR COM-120B Service Manual

STEP
PROCED URE
5. Set
Power Meter Parameters
as
follows:
Range
Peak Hold
Average
Cable
Loss
20 mW
OFF
OFF
0.0 dB
6. Connect 50
Q
Termination to
T/R
Connector
(7).
With
cursor
on
Range,
press
RE-ZERO
Soft
Function Key
F3.
7.
Connect
Test Equipment as shown
in
Figure 1-10.
8. Set
Test Equipment
for 101
MHz
signal
with
15 mW output
level
at connection
to
T/R
Connector
(7).
NOTE: Test Equipment
must be characterized
for
accuracy ol
2.5"/"
of
required
setting.
9.
Verify
Power Meter Reads
15 mW
(t1
.7 mW). lf not,
go
to Step
21.
10.
Set
Range
to
2 W.
11.
Connect 50
Q Termination to
T/R
Connector
(7).
With
cursor
on
range,
press
RE-ZERO
Soft
Function Key F3.
12.
Connect
Test Equipment as shown
in Figure
1-9.
13.
Set
Test Equipment for
1.5 W
output
level
at connection
to
T/R
Connector
(7).
NOTE:
Test
Equipment
must
be characterized
for
accuracy
ol
2.5"/"
of
required
setting.
14. Verify Power Meter
Reads
1.5 W
(10.3
W).
lf not,
go
to
Step
21.
15.
Set
Range
to 50
W.
16.
Connect
50
O Termination to
T/R
Connector.
With cursor on
range,
press
RE-ZERO
Soft
Function
Key F3.
17.
Connect
Test Equipment as shown
in
Figure 1-9
18.
Set
Test
Equipment
for 40
W
output
level at connection to
T/R
Connector
(7).
NOTE: Test Equipment
must
be
characterized
for accuracy of
2.5o/o
ol
required
setting.
19. Verify
Power Meter Reads
40 W
(i4.1
W).
lf
not,
go
to Step
21.
20.
Set
COM-1208
power
to OFF and disconnect
test equipment.
PERFORM
THE FOLLOWING ONLY
WHEN REQUIRED.
21. Press
SETUP
MEMORY
Key
(21).
22.
Select
"1.
Calibration"
f rom
Setup Screen.
1-46
STEP
PROCEDURE
5. Set Power Meter Parameters as follows:
Range
Peak Hold
Average
Cable Loss
20mW
OFF
OFF
0.0 dB
6. Connect 50 n Termination to T/R Connector (7). With cursor on Range, press RE-ZERO
Soft Function Key F3.
7. Connect Test Equipment as shown in Figure 1-10.
8. Set Test Equipment for 101 MHz signal with 15 mW output level at connection to T/R
Con n ector (7).
NOTE: Test Equipment must be characterized for accuracy of 2.5% of required setting.
9. Verify Power Meter Reads 15 mW (±1.7 mW). If not, go to Step 21.
10. Set Range to 2 W.
11. Connect 50 n Termination to T/R Connector (7). With cursor on range, press RE-ZERO
Soft Function Key F3.
12. Connect Test Equipment as shown in Figure 1-9.
13. Set Test Equipment for 1.5 W output level at connection to T/R Connector (7).
NOTE: Test Equipment must be characterized for accuracy of 2.5% of required setting.
14. Verify Power Meter Reads 1.5 W (±0.3 W). If not, go to Step 21.
15. Set Range to 50 W.
16. Connect 50 n Termination to T/R Connector. With cursor on range, press RE-ZERO Soft
Function Key F3.
17. Connect Test Equipment as shown in Figure 1-9.
18. Set Test Equipment for 40 W output level at connection to T/R Connector (7).
NOTE: Test Equipment must be characterized for accuracy of 2.5% of required setting.
19. Verify Power Meter Reads 40 W (±4.1 W). If not, go to Step 21.
20. Set COM-120B power to OFF and disconnect test equipment.
PERFORM THE FOLLOWING ONLY WHEN REQUIRED.
21. Press SETUP MEMORY Key (21).
22. Select "1. Calibration" from Setup Screen.
1-46
Scans by ArtekMedia © 2008

IFR COM-120B Specifications

General

Brand	IFR
Model	COM-120B
Category	Measuring Instruments
Language	English