Wavetek 147 Specifikace stáhnout pdf (Strana 92)

Field Sweeping with the SDA-5000: Sweep Receiver Configuration

reverse sweep and reverse noise features. This will speed

up the SDA-5500’s forward sweep. Also, be sure the

telemetry frequencies of the headend units are different.

• Forward Sweep Insertion Level (Transmit and SDA Compatible

Transmit (OPT2) modes only): This is the level at which sweep

insertion points will be inserted; 40 or 50 dBmV is the max. Sweep points

should be 14-16 dB below the video reference level. Sweep points fall on

the video and/or audio frequency of unused channels by default, but can

be moved.

• Forward Telemetry Level (Transmit and SDA Compatible Transmit

(OPT2) modes only): This setting determines the level of the telemetry

signal (FSK). This should be set 10 dB below the video reference level.

The telemetry level is adjustable from 20-50 dBmV in 2 dB increments.

The max is 50 dBmV, however some older units may have a max of 40

dBmV.

• Enable Reverse Sweep (Transmit and SDA Compatible Transmit

(OPT2) modes only): This setting allows reverse sweep to operate in

the Transmitter. If it’s disabled, forward sweep will be faster but reverse

sweep will be inoperable.

• Enable Live Headend Ingress View (Transmit and SDA Compatible

Transmit (OPT2) modes only): When enabled, this setting allows

reverse noise to be transmitted on the forward telemetry. If it’s disabled,

the forward sweep will be faster.

• Reverse Sweep Operation (Stealth and SDA Compatible Stealth

modes only): Select Single User for reverse operations associated with

a SDA-5500. Select Multiple Users for reverse operations associated

with a SDA-5510.

• Sweep Direction (Stealth and SDA Compatible Stealth modes only):

There are two possible sweep directions on SDA-5000 field units with the

reverse sweep option (OPT1): Forward and Reverse. Use the Edit Box to

select the direction desired, and then press the Enter key.

NOTE: When sweeping, you can change direction by

simply pressing the left diamond key for reverse, or the

right diamond key for forward sweeping.

• Reverse Telemetry Level (Transmit and SDA Compatible Transmit

(OPT2) modes only): The reverse telemetry level is the level of the

carrier that the SDA-5000 uses to transmit telemetry data. Use the Edit

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Wavetek 147 Specifikace Strana 92