GatesAir PT-353, Инструкция по установке и эксплуатации, Страница: 21 / 55

3 – Installation & Operation PT/PR-353 Program Audio Module Installation & Operation Manual
Version 1.1
GatesAir 3-7
Intraplex Products
Table 3-3. PR-353 Configuration Switch Settings
Switch
Position Label Setting Description
1 RT_CH UP Set for one-channel operation (turns right channel off)
DOWN Set for two-channel operation
2 48 kHz UP Off
DOWN Enable 48 kHz operation
3 44 kHz UP Off
DOWN Enable 44 kHz operation
4 32 kHz UP Off
DOWN Enable 32 kHz operation
5 SP6 UP Spare. Keep in the UP position
DOWN
6 A DEMPH UP Disable J.17 de-emphasis
DOWN Apply J.17 de-emphasis to analog output
7 SP5 UP Spare. Keep in the UP position
DOWN
8 CAS UP Disable channel associated signaling (2 MB systems)
DOWN Enable channel associated signaling (2 MB systems)
9 ECC UP Disable error correction
DOWN Enable error correction
10 SP4 UP Spare. Keep in the UP position
DOWN
3.3.2.1 Two Channel Operation (Position 1 – PT-353 SW6 and PR-353 SW2)
Select one- or two-channel operation with the RT CH switch (Position 1 – PT-353 SW6 or PR-353
SW2). When Position 1 on the RT CH switch is UP, one-channel operation is used and when in the
DOWN position, two-channel operation is enabled.
3.3.2.2 Sampling Rate (Positions 2, 3, and 4 – PT-353 SW6 and PR-353 SW2)
Select sampling rate by setting one of these switches DOWN:
●
48 ksps (Position 2 – PT-353 SW6 and PR-353 SW2)
● 44 ksps (Position 3 – PT-353 SW6 and PR-353 SW2)
● 32 ksps (Position 4 – PT-353 SW6 and PR-353 SW2)
As a general rule in operations, frequency response is equivalent to slightly less than half the sampling
rate.
3.3.2.3 Test Tone Generator (Position 5 – PT-353 SW6 and PR-353 SW2)
The test tone switch disables the audio input and switches on the 1004 Hz test tone generator. The
level of the tone is –12 dBfs which is the equivalent of an input of +8 dBm input.