Tektronix 1705A instruction manual Introduction Spectrum Display, CRT Display, Power Source

Introduction

Table 1- 1: Spectrum Display (Cont.)

	Performance		Check
Characteristic	Requirements	Supplemental Information	Step
Frequency Bright Up		Full Span has bright up and frequency
Marker Registration		readout (without cursor). Bright-up	5
		area will be on screen in at least the
		next narrower span.
Readout Accuracy	L---Band ±20 MHz.	Typically ±10 MHz.	11
	70 MHz ±2 MHz	Typically ±1 MHz.	5
Resolution
6 dB Down
300 kHz		300 kHz ±1 Division at 100 kHz	6
		Span/Div.
10 kHz		<2 minor Divisions at 100 kHz Span/	6
		Div.
Video Filter		Reduces Video bandwidth to ¶10 kHz.	8
Low Noise Amplifier/Block Down	+18 Vdc ±5%. 250	Output through L---BAND input	3
Converter dc Supply (LNB Power)	mA max.	connector, switched on and off by
		rear-panel slide switch. LED indicator
		on rear panel.
2 dB Gain Accuracy	¶2 dB/Division.	<3 dB/Division at ---50 dBm.	14

Table 1- 2: CRT Display

	Performance		Check
Characteristic	Requirements	Supplemental Information	Step
Crt Viewing Area		80 X 100 mm.
Accelerating Potential		13.75 kV.
Trace Rotation Range	Greater than ±1˚	Total adjustment range is typically 8˚.
	from horizontal.
Graticule		Internal 8 X 10 Division spectrum
		analyzer graticule with variable SCALE
		illumination.

Table 1- 3: Power Source

	Performance		Check
Characteristic	Requirements	Supplemental Information	Step
Mains Voltage Range	90---250 V.	Continuous range from 90 to 250 Vac.	2
Mains Frequency Range	48 Hz to 66 Hz.
Power Consumption		35 Watts (120 BTU/HR) maximum.

1705A Spectrum Monitor 1- 5