HP Cable Box 8591C manual Turning on the Analyzer for the First Time

Preparing For Use

Turning on the Analyzer for the First Time

N O T E

Record the firmware date and keep it for reference. If you should ever need to call Hewlett-Packard for service or with any questions regarding your cable TV analyzer, it will be helpful to have the firmware date readily available.

4.To meet cable TV analyzer specifications, allow a 30 minute warm-up before attempting to make any calibrated measurements. Be sure to calibrate the cable TV analyzer only U&Y the cable TV analyzer has met the operating temperature conditions.

5.Connect the 75 0 coaxial cable between the front-panel CAL OUT and the INPUT 75 D connector.

N O T E

Remove all connections to the GATE TRIGGER INPUT rear-panel connector before performing the self-calibration routines.

6.Perform the frequency and amplitude self-calibration routine by pressing (CAL) and CAL FREQ & AMPTD

During the frequency routine, CAL : SWEEP, CAL : FREQ, and CAL : SPAN

and CAL: FM GAIN + OFFSET are displayed as the sequence progresses.

During the amplitude routine, CAL ; AMPTD, CAL : 3 dB BW, CAL : ATTEN,

and CAL : LOGAMP are displayed as the sequence progresses. CAL : DONE appears when the routine is completed. Any failures or discrepancies produce a message on the screen; see Chapter 8.

1-14