IFR FM/AM-1200A

4-7-9 DUPLEX TEST (FM/AM-1200S ONLY)
EXAMPLE: Testing a Duplex transceiver
UUT XMT FREQ = 157.77 MHz
UUT REC FREQ = 152.51 MHz
STEP PROCEDURE
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1. Place MODE Selector Control (39) to "DUP" position.
FUNCT
and ~
2.
2ND
Enter: 1!!!11
until VFD displays:
IIII:!ule!LIE/xl !HirlsiHI I I I I Ill
Press: ~
VFD will display:
3. Enter~ 1•.11•1 ~ 1•1 [•ii•i (UUT XMT Freq)
~ 10PS OPT ~ • DVM DVM
OFFSET = 152.51 MHz (UUT Rec Freq) = 157.77 MHz
(UUT XMT Freq) (OFFSET = -5.26 MHz)
4. Enter:
4-43c
05
Use ~~~ Key until (-) sign appears in front of offset frequency.
[NOTE!
A generated RF frequency of 152.51 MHz with a 5
kHz deviation @ -15 dBm (±10 dB) (DUPLEX HIGH
mode) or -40 dBm (±15 dB) (DUPLEX LOW mode) is
present at the DUPLEX Output Connector (14).
T/R Connector (11) will receive an RF frequency
of 157.77 MHz. A signal of 152.51 MHz with a 5
kHz deviation @ -85 dBm (±10 dB) is also present
at the T/R Connector (11).