Harris ZX2500, Technical Manual

Page: 43 / 198

12/20/11 888-2595-001 1-25

WARNING: Disconnect primary power prior to servicing.
Section 1 Introduction
ZX Series
Title: SPEC, ZX TRANSMITTER FAMILY Sheet 6 of 7 Rev: B Dwg: 817-2350-085
ZX10: 250 kg (550 lbs) approx.
Air cooling: Air input with built-in filter at front. Air exhaust
with built-in DC fans at rear. Ducted air exhaust and/or
input available as option.
ZX2500: 17 m3/min (600 cfm) approx.
ZX3750: 17 m3/min (600 cfm) approx.
ZX5000: 17 m3/min (600 cfm) approx.
ZX7.5: 34 m3/min (1200 cfm) approx.
ZX10: 34 m3/min (1200 cfm) approx.
Ambient noise: Worst case, 1 m from front face, 1 m above
ground. Mounted in rack, no ducted air input or exhaust.
Figures in parentheses are for ducted air input and exhaust
option.
ZX2500: < 73 dBA (65 dBA)
ZX3750: < 73 dBA (65 dBA)
ZX5000: < 73 dBA (65 dBA)
ZX7.5: < 73 dBA (65 dBA)
ZX10: < 73 dBA (65 dBA)
REMOTE CONTROL
Parallel remote:
D-sub 25 female.
Status: open collector, 24 V @ 500 mA max.
Command: active low with internal pull-up.
Telemetry: 0 - 2 V, 2k source impedance.
Security: RF mute and external interlock lines.
ZX7.5, ZX10: D-sub 25 female to each amp chassis and D-
sub 9 with screw terminal breakout for system.
Ethernet (optional): RJ45, twisted pair .
COMPLIANCE
RoHS 2002/95/EC compliant: Yes.
R&TTE 1999/5/EC compliant:
Yes.
INPUT/OUTPUT SPECIFICATIONS
External frequency control: Parallel I/O control of up to 8
frequencies. Unlimited frequency selection via optional
N+1 controller.
AES3 audio inputs: (2) auto-switching AES3 inputs, female
XLR, 110 ohms balanced; -2.8 dBfs nominal; Adjustable
level from 0 dBfs to -15 dBfs in 0.1 dB steps for +/- 75 kHz
deviation; input sample rate 32 to 96 kHz.
Analog L/R inputs: Female XLR, >10K ohms, balanced,
resistive; default level +10 dBu for +/-75 kHz deviation.
Level adjustable from -10 dBV to +10 dBV.
Analog composite input:
(2) BNC inputs (1 balanced, 1
unbalanced); Balanced impedance 10k ohms or 50 ohms
(selectable); Unbalanced 10k ohms; Input level: 3.5 V p-p
for +/-75 kHz deviation; Adjustable 2 V p-p to 5 V p-p.
SCA audio inputs:
(2) inputs combined on one 5-pin XLR
female connector (mating male connector supplied); >10k
ohms balanced, resistive; +10 dBV nominal for +/- 6 kHz
deviation of FM sub-carrier.
External SCA inputs:
(2) BNC female, unbalanced; >10k ohm;
1.5V p-p nominal for +/-7.5 kHz (10%) deviation of main
carrier; adjustable from 1 V p-p to 4 V p-p.
RBDS data input: D-sub 9-pin female RS-232.
External 10MHz clock input:
BNC female, unbalanced, 50
ohm, -10 dBm to +10 dBm.
External 1 PPS clock input: BNC female, unbalanced, 50 ohm,
TTL level.
User remote interface: D-sub 25-pin female
.
N+1 interface:
D-sub 25-pin female.
RF sample out: BNC jack, -66 dBc, post harmonic filter.
19 kHz pilot sync output:
BNC female, unbalanced, 50 ohms
resistive, sine wave, AC coupled, 4.5 V p-p nominal,
unterminated.
Exciter communication ports: (2) D-sub 9-pin female; RS232
protocol, RBDS or VT-100 data.
Exciter ethernet ports: (2) RJ-45 on main processor board; (2)
RJ-45 on Exgine board (HD version only); all Ethernet
ports 10/100; supports static or dynamic IP address.
Exciter USB port:
Front panel USB type-A connector; USB 1.1
/ 2.0 compliant; supports configuration save/restore and
software updates via flash drive.
STEREO GENERATOR PERFORMANCE (AES3 OR
ANALOG INPUTS)
Modes: Stereo, Mono L+R, Mono L, and Mono R; remote
controllable.
Pre-emphasis: Selectable 0, 25, 50, or 75 microseconds.
Stereo pilot tone:
19 kHz +/- 0.03 Hz; injection adjustable 0%
to 12% in 0.05% steps; 9% nominal. 38 kHz, 57 kHz, 76
kHz, 95 kHz Suppression: 80 dB below +/- 75 kHz
deviation.
Stereo separation:
80 dB* /60 dB, 10 Hz to 15 kHz.
Dynamic stereo separation: 80 dB */60 dB, 10 Hz to 15 kHz*.
Stereo amplitude response:
+/- 0.1 dB, 10 Hz to 15 kHz
referenced to selected pre-emphasis curve.
Stereo signal to noise ratio (L or R): 85 dB below 100%
modulation at 400 Hz; measured in a 10 Hz to 22 kHz
bandwidth with 75
ȝ
s de-emphasis and DIN “A” weighting.
Stereo total harmonic distortion: 0.005%* / 0.02%, any
modulating frequency 10 Hz to 15 kHz, in bandwidth 10 Hz
to 22 kHz with 75
ȝ
s de-emphasis.
Stereo intermodulation distortion (L or R):
CCIF:
0.005%*
/0.02% Note 1; (14/15 kHz 1:1), SMPTE: 0.02%
(60/7000 Hz 1:1).
Transient intermodulation distortion (DIM):
0.008%*
/0.02%; (2.96 kHz square wave / 14 kHz sine
wave modulation).
Linear crosstalk: 90 dB below 100% modulation reference
(AES3 Input); L+R to L-R or L-R to L+R due to amplitude
and phase matching of L&R channels (10 Hz - 15 kHz).
Non-linear crosstalk: 80 dB below 100% modulation
reference; L+R to L-R or L-R to L+R due to distortion
products.
Audio overshoot:
Less than 0.16 dB.
MONO PERFORMANCE (AES3 OR ANALOG INPUT)
Pre-emphasis: Selectable 0, 25, 50 or 75 microseconds.
FM mono signal-to-noise ratio:
94 dB below 100%
modulation at 400 Hz; measured in a 10 Hz to 22 kHz
bandwidth with 75
ȝ
s de-emphasis and DIN “A” weighting.
Amplitude response: +/- 0.05 dB, referenced to selected pre-
emphasis curve (no low-pass filter).