Meter Display (18-0037) AM8a Instruction Manual
February 10, 2000 0037-S06.L_
6-12
6.6.4 RX1 Tone or RX2 Tone: These selections are used to measure Level and Frequency of
Tones present on the selected channel of the PCM1 RX or PCM2 RX input jack. The
Level is displayed in dBm and the frequency is displayed in Hz. A measured value of
"UNDER" in the Level display indicates the measurement is lower than the acceptable
limit. (dBm < -40).
6.6.5 RX1 dBdsx or RX2 dBdsx: These selections are used to measure the received bipolar
amplitude of the PCM signals from the DSX bay at the PCM1 RX or PCM2 RX jack. The
measured value is dependent on the Test Set MODE of the AM8a as described in 6.6.6
and 6.6.7.
6.6.6 RX1 dBdsx or RX2 dBdsx in Emulation Mode: When in EMULATE, the PCM1 or PCM2 RX
jack is connected to the RX jack at the DSX. The measurement will have zero gain
compensation added to the measurement.
6.6.7 RX1 dBdsx or RX2 dBdsx in Monitor Mode: When in MONITOR, the AM8a PCM1 or
PCM2 RX jack is connected to the DSX Monitor jack. The measured value will have a
gain compensation added to compensate for the signal attenuation of the 430Ω resistors
in the DSX monitor jack.
NOTE: This applies also to measurements made while in a Drop & Insert
Configuration (Rpt 1 to 2 or Rpt 2 to 1) since Drop & Insert also must
have both RX jacks connected to the Monitor jacks of the DSX.
6.7 NOISE MEASURE
This MEASURE display is available for all Trunk types.
NOISE 65 dBrn
INPUT TX FILTER CMSG
The display measures the Idle-Channel Noise between Tip and Ring of any selected LOOP, RX
or TX jacks, except for PCM. On PCM, the measurement is made internally on any of the 24
selectable TX or RX channels.
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