HDVG7 module adjustment procedures
HDVG7 module a
djustment procedures
The only adju
stment in the HDVG7 module is for the output level.
Requirements for adjustment
Before doing the adjustment, note the following requirements.
Personnel
This proc edure is only to be performed by trained service technicians.
Warm-up period
The HDVG7 module requires a 20 minute warm-up time in a +20 °C to +30 °C
environment before it is adjusted. Adjustments done before the operating
temperature has stabilized may cause errors in performance.
Access
When adjusting the output level, you need to remove the top cover of the
TG8000 mainframe. (See page 2-25, Top cover.)
Required equipment
The following table lists the equipment required to adjust the output level.
Table 13-1: Equipment required for the HDVG7 module adjustment procedures
Item No. Minimum requirement Recommended equipment
TV signal generator platform
1
Tektronix TG8000
Digital signal analyzer 1
Digital signal analyzer with a 20 GHz
electrical sampling module and a probe
interface m odule
Tektronix DSA8200 with an 80E04
electrical sampling module and an
80A03 Tek C onnect Probe Interface
module
Stable 10 kHz sine wave
generator
1
CW sine wave with 800 mV
p-p
±5%
into 75 Ω,THD<60dBc,10kHz,and
<50mVDCoffset
Tektronix AFG3101
Tekconnect 75 Ω to 50 Ω
adapter with BNC input
connector
1
Tektronix TCA75
Precision RMS voltmeter
1 Keithley 2700 DMM
6 dB SMA attenuator
1 Tektronix part number 015-1001-01
SMA (male) to BNC (female)
adapter
Tektronix part number 015-0554-00
1 m (3 ft.) BNC to BNC
high-bandwidth cable
1 Belden 1694, MarkerTek 1694-B-B-3
13–2 TG8000 Multiformat Test Signal Generator Service Manual
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