Spectracom Corporation
PathAlign-R
2200 / 2240 / 2241 PathAlign-R Manual
2-15
long as the selected frequency stays within the Band 1 range). Repeat this step for each
of the other three Bands.
3. Next, set the ’AUDIO Alignment Tone/Voice’ switch to ’Alignment Tone’ and advance the
’AUDIO Volume’ knob until the tone can be heard coming from the front panel speaker
(located behind the circular front panel graphic). Advance and retard the ’AUDIO
Volume’ knob to confirm its function. Insert the Headset plug into the front panel
’HEADSET’ jack. Tone will no longer be heard coming from the speaker but will now be
heard in the Headset’s earpiece.
4. This completes the incoming confidence check. The instrument can now be place in
service.
2.8
Optional Additional Checks
2.8.1 Transmitter Check
Connect a microwave frequency counter and a microwave power meter, to the Band 1 in/out
connector, using the appropriate SMA coax cable. With the PathAlign-R thumbwheel switches,
select a frequency that is within the Band 1 range. Using the power meter, verify that the output
power level is 0dBm, nominal. Using the frequency counter, confirm the frequency measured
agrees with the frequency set on the thumbwheel switches. (Note: the setting of the
’MASTER/SLAVE’ switch affects the transmitted frequency. The output frequency will be 20
MHz (±500 kHz) above the set frequency when the ’MASTER/SLAVE’ switch is set to
‘
MASTER’; 19 MHz (±500 kHz) below the set frequency when the ’MASTER/SLAVE’ switch is
set to ’SLAVE’. This 39 MHz offset makes possible the full-duplex voice transmission and
measurement of the PathAlign-R). Repeat this step for the other three Bands.
2.8.2 Receiver Check
Connect a microwave signal source (Sweeper, Synthesizer, or Microwave Test Set), with its
output deactivated, to the Band 1 IN/OUT connector, using the appropriate SMA coax cable.
With the PathAlign-R’s thumbwheel switches, select a frequency that is within the Band 1 range.
Set the PathAlign-R’s ’MASTER/SLAVE’ switch to ’MASTER’. Set the signal source to the same
frequency as the thumbwheel frequency setting...Minus 19 MHz. Set the source’s output to -60
dBm. Activate the source and verify that the PathAlign-R’s ’PATH LOSS’ meter reading is 60
dB, nominal. (Note: the setting of the ’MASTER/SLAVE’ switch affects the received frequency.
The input frequency will be 19 MHz below the set frequency when the ’MASTER/SLAVE’ switch
is set ’MASTER’; 20 MHz above the set frequency when the ’MASTER/SLAVE’ switch is set to
’SLAVE’. This 39 MHz offset makes possible the full-duplex voice transmission and
measurement of the PathAlign-R). Repeat this step for the other three Bands.
Caution:
When connecting the SMA terminated end of the cable to the front panel Band
connector, do not over-tighten the SMA cable connector, as it can damage the front panel
connector’s center pin. A 5/16” open end wrench fits SMA connectors; recommended torque is
8-inch/pounds. A special 5/16” open end is available from Torque Controls, So. El Monte,
California. The manufacturer part number is ’A5’.
This completes the OPTIONAL incoming confidence / verification check. The instrument can
now be placed in service.
Summary of Contents for Pendulum PathAlign-R 2200
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