Tektronix 1705A, Instruction Manual

Page: 23 / 223

Introduction
1- 4
1705A Spectrum Monitor
ELECTRICAL SPECIFICATION
Table 1- 1: Spectrum Display
Characteristic
Performance
Requirements Supplemental Information
Check
Step
Frequency Range
L--- Band
70 MHz 950 to 1800 MHz
45 to 100 MHz F--- type connector
Bnc connector
Frequency Span
L--- Band
Full
10 MHz/Division
1 MHz/Division
100 kHz/Division
70 MHz
Full
1 MHz/Division
100 kHz/Division
10 Horiz. Div. Equals:
1000 MHz
100 MHz
10 MHz
1 MHz
10 Horiz. Div. Equals:
50 MHz
10 MHz
1 MHz
11
5
Span/Div Accuracy Typically 0.5 minor Division.
Brightup offset by 1 Division in FULL
SPAN/DIV should still come on screen
in the next magnified position.
4, 5, 10, 11
11
Flatness L--- Band ±5 dB.
70 MHz ±2 dB. ± from center (1400 MHz).
± from center (70 MHz). 12,
7
Maximum Signal Input L--- Band: --- 30 dBm,
75
Ω
. 70 MHz:
--- 20 dBm, 75
Ω
..
Minimum Signal Input --- 80 dBm.
Relative Amplitude Accuracy L--- Band (only)
±3 dB/100 MHz. Typically ±1 dB /100 MHz. 12
Sweep Length
¶
12 Divisions all SPANS/DIV settings.
4
Sweep Speed Typically 20 --- 200 ms. 9
Positioning Range
Vertical
Horizontal + and --- 3 Divisions.
+ and --- 2 Divisions.
13
Displayed Frequencies in FULL
SPAN/DIV
L--- BAND (900 --- 1900 MHz)
70 MHz (45 --- 100 MHz)
Left Grat. Mid Grat. Right Grat.
Edge Line Edge
900 1400 1900
45 70 95
11
5
Frequency Readout Center Frequency shown by time
sharing graphic readout. Exact posi-
tion on the trace of the center frequen-
cy shown by a caret in all spans except
FULL.
11