Rohde & Schwarz M3SR Series 4100, Service Manual, Page: 81 / 138

Test of Specification R&S M3SR Series 4100 HF Transceivers
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3.3 Test of Specification
C A U T I O N
Only qualified personnel may perform the following function tests.
For details on connectors and contact assignment see Interface Description in Appendix.
NOTE:
Note that a 28 VDC supply voltage is available at antenna connector X30.
Before checking the transmitter functions, make absolutely sure, that a 50-
Ω
load (power
meter) is connected at antenna socket X30. Do not switch to transmit mode while the signal
generator is connected to antenna socket X30.
Test equipment and tools for the following function tests are listed in 3.1 - Test Equipment and Tools.
Carry out the test steps in Table 3.3.
Table 3.3: R&S M3SR Series 4100 - Test of Specification
No. Activity Nominal Value
1 Preparations
1.1 Arrange the test setup acc. to Fig. 3.1,
connecting the 28 VDC power supply to
connector contacts X31.A1 (+) and X31.A2
(ground).
Connect a mating connector to connector
X26 with short-circuit of pins X26.6 and
X26.44.
If no R&S GB 4000C Comfort Control Unit is
installed, connect one to LAN connector X20.
Connect R&S GB 4000C to transceiver via
default address on MMI choosing Connect
and Enter button.
1.2 Switch on the test equipment and
transceiver.