Operating Instructions (18-0015) AM-48 Test Set
0015-S077-22
7.18 Send PAR Waveform
1. See Figure 7-3. Set switches per the SWITCH SETUP illustration,
and set the SEND cursor per the lower menu illustration.
2. Go to the “LEVL” display and set the desired level value.
3. PAR level is limited to the range 00.0 dBm to –40.0 dBm.
4. If the level were above 00.0 dBm or below –40.0 dBm, the PAR
level would default to 00.0 dBm 0r –40.0 dBm, respectively,
while sending PAR. For this case, if no new level value were set
while in the PAR mode, the level value would return to its
previous value after exiting PAR.
7.19 Send Momentary 2713 Hz Tone
Press <X TONE> with Switch 8 to momentarily send a 2713 Hz tone,
overriding the internal signal generator. This is used to activate
loopback devices. See “
Loopback Testing ” in ¶6.6.
7.20 ¶7.21 thru 7.24 cover general instructions
and Notes for the MEASURE Modes.
7.21 Accuracy of Measurements
Observe instructions listed here to ensure accurate readings with the
AM-48.
1. Be sure
Switch 12 is in <ON HK> except when an off-hook
condition is desired for 2-wire access lines. Switch 12 in
<TONE> or <PULSE> will cause erroneous readings for
measurements on 4-wire circuits.
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