CTI Products TSAM Transmitter Steering & Audio Matrix - Manual (Page 64)

TSAM Installation and Maintenance Rev. 2.10 Chapter 7
CTI Products, Inc. Tone Timing Diagrams
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6.2.1 Motorola Centracom Series II Consoles
Set the average transmit audio level of the Centracom console to -10 dBm as outlined below. This level
provides proper operation with the TSAM when the TSAM is adjusted according to the procedure below.
No additional adjustment to the Centracom console are necessary.
Select the high TX audio input range (-8 to +6 dBm) for both Console 1 & 2 TX audio inputs (see jumper
Table 7 on page 70).
The Motorola Centracom Series II BIM (Base Interface Module) will generate the series of test tones when
the card is manually reset. A 1000Hz tone is generated for 5 seconds followed by 3 seconds of 300Hz and
3000Hz respectively. These tones are generated at 6 dB below HLGT (High Level Guard Tone). Set the
1000Hz test tone level to -10 dBm as measured at the output of the BIM. This level approximates the
average voice level.
Connect an AC voltmeter to the TSAM C1 test point. Reset the Main Channel BIM, while the 5 second
1000Hz test tone is being set adjust the C1 TX control for a reading of -6 dBm on the voltmeter. This sets
the average voice level for 6 dB below HLGT.
Repeat this procedure for the console 2 audio input using the C2 test point, and secondary channel BIM.
6.2.2 Level setting for other consoles
The TSAM will accept audio levels from -32 to +6dbm referenced to the nominal high level keying tone.
Three jumper selectable ranges are available to allow adjustments over this range.
When setting the TSAM TX inputs, use either the high level keying tone or a 1000 Hz test tone from the
console mic input set to the maximum voice level. While generating the proper reference tone, meter the
C1 and C2 test point and adjust the C1 and C2 level pots until 0 dBm is obtained.
If 0 dBm cannot be obtained, measure the TX audio output from the console and reset the TX input level
jumper for the proper range.
6.2.3 Bridging Inputs
To select bridged input mode, jumper the C1 and C2 TX audio inputs according to Table 7 on page 70. In
this mode, the audio input impedance is raised to 10K allowing the TSAM to be added to a line with other
equipment.
6.3 Transmitter 1-8 Line Output Adjustments
Transmit audio from the console is routed to one of the system base stations. The procedure below
outlines how to set the Transmitter Line Out Level for each Transmitter output.
6.3.1 TX Output Level Settings
Output level adjustment is based on your Telephone Company’s maximum line level specifications.
6.3.2 Metering of TX outputs
Connect an AC voltmeter across the TX 1 output line. This will be located either on the TX connector
punch block or at TELCO line connection.